..And I thought replacing the 4 belts on a Marantz CD10 CDM4 transport was a nightmare. That took a lot of finesse and patience - well done Dr Cassette!
Thanks for the video. Just found my KX-930 has a bad belt. Curled around the motor pulley. This alway happens when you need it. (after years of not using :-). I will order a set of belts and will replace them, like you showed us. I bought my KX, back in the early nineties and it still looks like new. I hope it soon will sound as new too.
Great video and very clear....and calm :) Kudos for the perfectionism from one perfectionist to another, and congrats on the complete lack of cursing, shaking hands, dropped tiny screws etc. Inspirational :P
You know, if you don't have extra parts after piecing it back together...you've done it wrong! :) Wow, they didn't make it easy to replace the belts! Great job! ~Jack, VEG
Very super video! I like showing you the fix in real time. I see that we are thinking the same way during the repair. I was shocked I had never seen one before. I just disassembled such a mechanic and you did it the same way. I subscribed!
Thanks for this excellent video. This deck is almost identical to my Kenwood KX-4520 and the belts had turned to goo so this video has helped me a lot. Thanks.
thanks to this video. i have my tapedeck kx 4520 which is very identical. same problem. but unfortunately i cant fixed it. i think there is different problem. tape dont play.
Excellent video which I’ll use as a guide: preparing to change the belts (W&F about 1.2% not good) and as you said, the poor serv manual doesn’t help a lot. Thank you for sharing and good luck to me.
Those dentistry tools look very handy. A repair job like this would be way too nervewrecking for me, the mechanism looks dauntingly complex. I struggled with a Dual 1224 once but I’m never going to attempt that ever again😅, got to a certain point and realized that the next steps would be to risky. I still need to fix the tonearm lift piston since 2015 but I don’t have the guts to take apart the tonearm assembly.
Goodnight friend. I received this model from a customer to change the belt, but it took some work but it's difficult to get a belt that fits right because the ones I put on make the capstan rotate a lot, making the sound unstable, shaking because the belt is shaped not regular.
Thank you kindly for making this video. Just subscribe. I have a KX-1200 which I purchased in 88. Will attempt to replace the belts myself with the help of this video.
Thanks, I got my belts and replaced the old ones. O boy what does this deck sound good. Still looks like new. but now again it sound like new again. Shame old cassettes were not used for a long time and now it seems the song pressed through and you can hear it in te silent parts. I think I need to re record those. Advice for the cassette lovers. Don't leave your deck too long not used and once in a while replay all cassettes.
I know what you mean, the copy-through effect. On some types and brands of cassettes this effect was very strong, on others not so much. It can be prevented or at least minimized by playing or just fast forwarding and rewinding cassettes from time to time, this way the tape layers end up in slightly different places each time.
Hello it looks like watchmaker art for me, my highest respect for your skills. There're many cheap tape decks for sale now, but that's what keeps me not buying that decks. Usually all belts are rotten. Best regards
I had taken a photo of all the connectors on the main board which turned out to be quite handy because the record head and the playback head have the same connector.
I replaced the counter belt the way you did but then only the speeding forward knob works with the counter. The backward function still doesn't work as you need a double belt or a belt that covers both axes for the cassette? With one belt?
@@DrCassette My question was there because both axes are equipped with a wheel on which a belt could be present. Thanks a lot for your answer and after replacing the belt the way you did and reassembled everything it all worked the way it should and that includes the counter as well.
Excellent work and thanks for sharing it! Did you find any other place to purchase the belts? I have to up for replacement. One Yamaha KX-130 and one KX-200..
Oha, das sieht um einiges komplizierter aus, als bei meinen Sony Decks. Aber die Qualität des Laufwerks dürfte um einiges besser sein. Tolles Video!! Hat dieses Deck nicht auch so ein Schaltrad für den Kopfschlitten? Ich hatte schon mal das Problem bei Sony, wenn das Deck nicht 100%ig in Stopp Position ist, funktioniert es nachher nicht richtig. Das wird in vielen Videos nicht erwähnt.
Good work! You got lucky because the old belts were not a messy goo. As for a good place to buy belts, I bought a few "high quality", "high priced", "slow delivery" ones. The good news is that if you can wait like 4-12 weeks to receive, you will get very good belts that may last 10-30 years more. I won't even mention the name of the seller because you may not have a good experience. My suggestion is to ask for practical advice based on experiences at places like audiokarma.org
Topp, Daumen hoch! Tolle Arbeit, leicht zu verfolgen, auch wegen der guten Kamera-Einstellung. Jetzt weiß ich aber auch, was ich an meinem Revox-Decks (nicht) habe, nämlich Riemen, die zerfallen können. Da machen sich die Vier-Motoren-Laufwerke bezahlt. Bin schon auf den nächsten Teil gespannt. Ich muss aber doch noch kurz den Klugscheißer-Modus einschalten: Am Laufwerk, in der Nähe der Bandführungen und Köpfe sollte nicht mit einem magnetischen Bit-Halter-Schraubendreher herumgewerkelt werden ;-).
Ich habe das heute mal geprüft: Das Magnetfeld von dem Bit-Halter-Schraubendreher wird von dem Schraubendreher hinreichend abgeschirmt, wenn ein Bit eingesetzt ist, dann ist das Magnetfeld mit einem Metallstück als Probe kaum wahrnehmbar. Geht also in Ordnung, so lange man nicht direkt auf dem Kopf damit herumfummelt.
Thank you for sharing, I found it very relaxing, almost like ASMR :-D I have gotten back into cassettes and cassette decks after over 20 years. BTW where is the idler tire in this unit? I don’t see it in any part of the video.
The more modern cassette mechanisms like the one seen in this video use gears instead of idler wheels. This generally makes the mechanisms much more reliable, except on some mechanisms where the gears have a tendency to break...
I was looking for some insights in belt replacement for my Kenwood kx 7030. I have not opened up the Deck yet, but looking at your video and the kx 7030 service manual it seems that there must be a big similarity on this mechanical part. I can comment on this after christmas having the belt replaced by then…
Yes just finished replacing the belts on my Kenwood. It is almost the same as the mechanism shown here, if not exactly the same. My small belt was gone as well, all sticky stuff could not get it off my hands. It is a little bit difficult to reach everything, after all, seen this movie, it worked out fine 👍
Congratulations for the successful repair! The rubber residue of molten belts can be washed off with isopropyl alcohol (IPA), but that is of course not good for the skin.
The source for belt is make it yourself get a saw hole cutter find the size you need drill it to the depth you want a piece of plywood fill it with medium grade hardness silicone smooth off the top let it Harden you got a belt with some melted candle wax go round the hole you cut first with an artist's brush. You should put your belts first in a bag of talcum powder gives better smoother operation
Are you kidding me? A cassette deck belt ist a precision component that has major influence on Wow & Flutter, you can't just fabricate some silicone ring for that!
Excelent video. Very usefull for kx-650 (has identical mechanism). Changed my belt for kx-930(decent belt, cost me 1 EUR). Unfortunaly my deck plays for 2 seconds and the right wheel stops while everything alse spins for anoteher 3 seconds. I'm desperate, don't know how to repair it. Any sugestion is appreciated. Thank you 👍
Vezi sa inlocuiesti cureaua de la counter...am patit asa cu JVC DD 66...are o celula fotovoltaica care citeste daca se invarte!In general,asta-i problema,dar nu-i exclus si o problema pe partea electronica.Dar,mai mult ca sigur iti lipseste o curelusa,care invarte o rola ceva,iar fotosenzorul pune stop!Cu un pic de atentie,o sa o gasesti!
My KX-930 shows similar issues. Replaced 2 belts. The small belt for the wheel with the silver/black segments was completely molt to a kind of black sticky glue. It seems that these remains have covered on the segment wheel and also the corresponding photovoltaic sensor above. Therefore the KX-930 could not recognize the movement of the wheel. Maybe that´s why the mechanism stops after some seconds. I am trying to remove the stain and hope it´ll work properly again.
Hello, I just bought a YAMAHA KX W-952 RS Cassette deck everything works but the display of the controls is totally out of order. No reaction from where it can come ?? Thank you for your answers
greetings. Could you tell me the size of the belts and where they go on the capstain pulleys, on the aiwa multicassette player A70, mine deteriorated and I don't have the diagram, thank you very much.
Is aversge belt 8 inches? Tried to put the one that slipped off my Ultrx two direction cassette back on. It was 14 inch, a 7 inch circle. Strectched out shape? Maybe that is why it don't work. Thank you for your video.
@@DrCassette The belts and pinch roller are available (Ebay, et. al.). I opened up the unit and it doesn't look easy to get at the belts and pinch roller. I downloaded the service manual and there's nothing showing how to replace the belts and pinch roller.
Some cassette decks I keep (like the Yamaha deck seen in this video), other cassette decks I sell. I am not a business, all these cassette decks belong to me, I don't do commissioned work for customers.
I don't know what audiophile quality means. I had a cheap deck in the 1990s and it wasn't great. Now you can afford top class gear like this Yamaha. It sounds very good. I don't use any dolby but my friends ask me "Where's the hissing of the tape?" We all remember cassette as something inferior but it may sound very good. I can't tell a differnce. I play from cds, vinyl, files, cassettes. But cassettes are rather for older, not contemporary music. I wouldn't record on cassettes like I did in the early 1990s.
@@DrCassette well i have old decks that when i record from cd i show it to several of my friends ,i make the pepsi chalenge and they always choose the tape recorded(no nr) having better sound than the cd,and i don´t use any effect on sound ,all defeat on amplifier and the cd player wasn´t the best at it´s time but very rich in mid frequencies compared to others,regards
Do yo plan to keep it for your self or put it for sale? Regarding rubber belts: I order mine from aliexpress or some chinese sites. Just order some assorted packs of differents lenghts, widths and thicknesses.
I will keep the deck, at least for now. It's good for transferring cassettes to digital because it has the play trim control to restore some of the high frequencies on very old recordings. Also, with one button missing, I wouldn't get nearly as much money as this deck is worth.
Sorry it took me so long to reply you have to go in there and say assortment of flat belts they give you and I sent a package I believe it's either 50 or 60 belts and it's a full assortment of all different sizes of flat belts it's not a you don't go in there looking for a specified model number you just go in there and ask for replacement belts assorted and you will find them you find them in geek and you can also find them in wish.com I find them in there all the time and I replace a lot of these belts I've serviced Aegis tape decks all the time instead of going crazy 4 belts but like these Yamahas and Fishers and Sony's all these units like this from the 80s and 90s those belts that you get from the wish and geek we'll fit I haven't had any problems yet
If there are two pinch rollers, the cassette deck either has auto reverse, or dual capstan drive. Standard cassette decks only have one pinch roller for one capstan.
@@DrCassette my decks left channel is significantly quieter than the right channel. Could you help me find the solution? My machine is very similar (Yamaha k-1000)
Start by making sure the heads are clean and the head alignment has not been changed. Continue by checking the connection from the heads to the amplifier board. From that point onwards things get too complex for a remote diagnosis...
@@DrCassette Heads are fine and clean. Mine has DBX. When turned off, the left channel is a bit louder but is still much weaker than the right one. Could it be one of the capacitors?
Why Yamaha made it so difficult to change belts!!??, I have many cassette decks and it's the first time I see such a complex procedure.. I have a double Yamaha deck and after i saw that I will probably sell it.. that's a nightmare!!
@@DrCassette True, very complicated to change the belt. After so much work, my client still thinks I overcharged, apart from the china belts that are all deformed, irregular causing fluctuation in the capstan rotation.
Is the kx 650 a similar process to this video ? I got a free 650 ,FF/RW work fine but play.....it starts to play but it looks like the supply reels not turning .Would new belts solve this problem ?
Apparently Marrs communications is very good for high quality OEM standard cassette deck belts. Many people on tapeheads.net use Marrs belts, especially on Nakamichi gear. They are quite pricey though but again, supposedly the best around
This cassette deck has a dual capstan drive, meaning both pinch rollers are engaged at the same time, one feeding the tape to the heads, the other one away from the heads. The speed that both capstans run at is carefully balanced to be slightly different. This way the proper tape tension across the heads is ensured. This eliminates the bad influence the supply reel and the cassette shell can have on sound reproduction.
Nice video, I had good luck with belts from turntableneedles.com, didn't measure w&f thou. I also 'lost' grounding spring first time. It's well worth going thru electrical adjustments for PB\Rec\meters\tape speed at least. This deck is a very good deck and is worth keeping.
Yeah, many belts on cheaper decks, especially double deckers, turn into black gummy goo stuck to the capstan wheels - many Sony decks being affected - sorry Sony fans, but from mid 90s the company many more and more junk until it seems to make mostly junk. Good made in Japan belts are available for many decks but you have to pay for quality more these days than before. Tapeheads.net, audio forum dedicated to tape decks has members who are knowledgeable and might give advice. Some people people sell calibration tapes, Alex being know for making excellent ones. Also there is W&F measuring soft available from one of the members - a must to have tool for testing and troubleshooting mechanism. If you have really good direct drive deck you can make 3kHz tape for setting speed after belt change - give the belt some time to set in. On the other hand I have question - where can I get spare capstan motor, CCW 12V, adj speed - same as in the Yamaha you have, but also used on many other machines.
How long have you been having dissolved belts in 90s Japanese equipment? This seems to be a rather recent development, when I got into repairing equipment about 10 years ago, you would only find dissolved belts in 1960s/70s Philips equipment and obscure old Korean equipment. Seems to me like the 90s cheap belts held up until fairly recently and are just now starting to fail and dissolve. As for your motor replacement, I would try to salvage one from another cassette deck. These are indeed very common in 90s cassette decks.
@@DrCassette Had two dual decks from Sony, one with Dolby S. Both of them had disintegrated belts on both decks - the transports were of no better quality than some portables. But JVC, Technics, Pioneer and Teac from the same time didn't have the same problem. Have JVC and Technics under my bed with JVC having capstan motor dead with worn bearings in one deck (for parts) and Technics still working properly with a little age related issues (worn heads, higher W&F). It's very hard to find used deck in Canada in good condition - Canadians are not in Audio like Europeans. There is a few of us in Ottawa that do DIY audio and repair electronics, some restoring old equipment but in Europe this kind of hobby is more popular. Another thing is that a lot top of the line equipment that was available in Europe and Japan never made it to Canada. You think I have seen Accuphase here - no, but some of my friends in Poland own it. My first contact with Nakamichi and top of the line Akai Aiwa, etc, was in mid 80s because people were bringing them from Germany, with almost every Japanese brand available. You are in way better position to find worthy equipment like this Yamaha in Europe than me in Canada. From all electronic shops that still fix audio, only a few are left, run by Chinese owners and some hard core people who like it because nobody can get the parts or repair costs are too high. Well eventually I fix my Nakamichi somehow and really good CD player from this time that has all the functions and headphone output.
@@DrCassette There are good companies here, my friend Mark Kravczenko designs some of the best spkr drivers you can get, but in very limited number, his AMTs are as good as Mundorf. National Research Council has nice anechoic chamber that a lot of North American firms are using, and a lot pioneering research in spkr design was done there. Focus Audio from Toronto Area uses Eton and Scan in their spkrs SimAudio, Bryston, Paradigm are known every where to Hi-end enthusiast. But for most people cheap sound bar and large TV from Best Buy is enough and we have decline in serious audio interest in general, thanks to MP3s and junky headphones from Dr Dre (same price Audio Technica M-50X wipe the floor with them). So this is the sorry state of audio in Canada, at least in Ottawa.
I got serious problems with nice deck from the early 1980s with the "goo monster" belts -- actually with only the capstan big flat belt. A mess to clean up, but then worth it -- lots of Q-tips, paper towel and alcohol -- some people suggest to use stronger chemicals as acetone but I didn't dare to use. I agree w/ your suggestion to calibrate the speed w/ a proper speed tape (3 kHz).
I am so mad at myself today...for all that have a Technics RS-TR311...do NOT give up on a problem where the tape will not play forward...and will only play backwards...it IS THE center gear that look off yellow, that go between the two drive pins that go thru the tape...it has gone soft and the teeth break off, and they can be purchased and replaced...BUT not for mine..it is TRASH...... because I gave up.
find one for sale by that time decks were bought but not that much used ,so you might find one cheap and recover the part you need, i had a similar case and that´s how i restore it to play again but it was not a yamaha, regards
Many 1990's decks were cheapening out so lots of corners had to be cut. Most were not as good as late 70's to mid 80's era decks. Most cassette decks peaked in mid 80's.
![Yamaha KX-930 cassette deck repairs [3/3]](http://i.ytimg.com/vi/rHLhRL1Vgyo/mqdefault.jpg)
![Yamaha KX-930 cassette deck repairs [3/3]](/img/tr.png)
![Yamaha KX-930 cassette deck repairs [1/3]](http://i.ytimg.com/vi/Q6V8k2KzeHI/mqdefault.jpg)
I have done this service to several cassette decks myself, this is a lovely unit and high quality materials Brilliant work as Always DrCassette
Thank you :)
..And I thought replacing the 4 belts on a Marantz CD10 CDM4 transport was a nightmare.
That took a lot of finesse and patience - well done Dr Cassette!
Thank you :)
Thanks for the video. Just found my KX-930 has a bad belt. Curled around the motor pulley. This alway happens when you need it. (after years of not using :-). I will order a set of belts and will replace them, like you showed us.
I bought my KX, back in the early nineties and it still looks like new. I hope it soon will sound as new too.
Great video and very clear....and calm :) Kudos for the perfectionism from one perfectionist to another, and congrats on the complete lack of cursing, shaking hands, dropped tiny screws etc. Inspirational :P
Thank you :)
The best part is all the extra screws you can have when you put it back together!
Changing the belt of these mechanisms is a real nightmare. You must have a lot of patience. Congratulations on the video. Hugs from Brazil
Thank you :)
You know, if you don't have extra parts after piecing it back together...you've done it wrong! :) Wow, they didn't make it easy to replace the belts! Great job! ~Jack, VEG
Very super video! I like showing you the fix in real time. I see that we are thinking the same way during the repair. I was shocked I had never seen one before. I just disassembled such a mechanic and you did it the same way. I subscribed!
Thanks for this excellent video. This deck is almost identical to my Kenwood KX-4520 and the belts had turned to goo so this video has helped me a lot. Thanks.
I'm glad this video was helpful :)
thanks to this video. i have my tapedeck kx 4520 which is very identical. same problem. but unfortunately i cant fixed it. i think there is different problem. tape dont play.
It might sound weird, but I found this quite a relaxing video to watch, especially with the sound of rain outside my window. :-)
This video is certainly more than long enough for relaxing :)
I've destroyed my fair share of devices trying to get them 'perfect'.
Same 😢
Best instructional belt replacement vid ever!
Thank you :)
Excellent video which I’ll use as a guide: preparing to change the belts (W&F about 1.2% not good) and as you said, the poor serv manual doesn’t help a lot. Thank you for sharing and good luck to me.
Thank you my friend for this video! It helps me a lot to repair my deck❤ You did a very very great job👍
Thank you, I am glad this video is helpful :)
Excellent instructions, works perfectly.
Note: the instructions also works with the KX-650, the drive is identical to the KX-930.
Thank you, I am glad this video was helpful :)
Those dentistry tools look very handy. A repair job like this would be way too nervewrecking for me, the mechanism looks dauntingly complex. I struggled with a Dual 1224 once but I’m never going to attempt that ever again😅, got to a certain point and realized that the next steps would be to risky. I still need to fix the tonearm lift piston since 2015 but I don’t have the guts to take apart the tonearm assembly.
Goodnight friend. I received this model from a customer to change the belt, but it took some work but it's difficult to get a belt that fits right because the ones I put on make the capstan rotate a lot, making the sound unstable, shaking because the belt is shaped not regular.
Thank you kindly for making this video. Just subscribe. I have a KX-1200 which I purchased in 88. Will attempt to replace the belts myself with the help of this video.
Good Luck!
Thanks for the walk through. Just helped me replace mine. God I love TH-cam!!
Thanks, I got my belts and replaced the old ones. O boy what does this deck sound good. Still looks like new. but now again it sound like new again. Shame old cassettes were not used for a long time and now it seems the song pressed through and you can hear it in te silent parts. I think I need to re record those. Advice for the cassette lovers. Don't leave your deck too long not used and once in a while replay all cassettes.
I know what you mean, the copy-through effect. On some types and brands of cassettes this effect was very strong, on others not so much. It can be prevented or at least minimized by playing or just fast forwarding and rewinding cassettes from time to time, this way the tape layers end up in slightly different places each time.
Hello it looks like watchmaker art for me, my highest respect for your skills. There're many cheap tape decks for sale now, but that's what keeps me not buying that decks. Usually all belts are rotten. Best regards
😐😐😐 its just a deck belt.. my grandma can do it...
Thanks for the video, just got my thrift store mint low hr 930 running!!
A good idea is to take photos of the equipment interior and the mechanism before starting to take things apart.
I had taken a photo of all the connectors on the main board which turned out to be quite handy because the record head and the playback head have the same connector.
I replaced the counter belt the way you did but then only the
speeding forward knob works with the counter. The backward
function still doesn't work as you need a double belt or a belt
that covers both axes for the cassette? With one belt?
In rewind mode the counter only works if there is a cassette present. This is normal.
@@DrCassette My question was there because both axes are equipped with
a wheel on which a belt could be present. Thanks a lot for your answer and
after replacing the belt the way you did and reassembled everything it all
worked the way it should and that includes the counter as well.
Excellent work and thanks for sharing it! Did you find any other place to purchase the belts? I have to up for replacement. One Yamaha KX-130 and one KX-200..
Me neither; the round belts is no problem, i bought a few sets on Banggood.
do belts have a standard size or are they different between makes and models?
Belts are all different depending on the mechanism they are used in.
Hello,
I bought belts from Thakker.
So far, so good
what size kx 390 belt?
Oha, das sieht um einiges komplizierter aus, als bei meinen Sony Decks. Aber die Qualität des Laufwerks dürfte um einiges besser sein. Tolles Video!! Hat dieses Deck nicht auch so ein Schaltrad für den Kopfschlitten? Ich hatte schon mal das Problem bei Sony, wenn das Deck nicht 100%ig in Stopp Position ist, funktioniert es nachher nicht richtig. Das wird in vielen Videos nicht erwähnt.
Good work! You got lucky because the old belts were not a messy goo. As for a good place to buy belts, I bought a few "high quality", "high priced", "slow delivery" ones. The good news is that if you can wait like 4-12 weeks to receive, you will get very good belts that may last 10-30 years more. I won't even mention the name of the seller because you may not have a good experience. My suggestion is to ask for practical advice based on experiences at places like audiokarma.org
Topp, Daumen hoch! Tolle Arbeit, leicht zu verfolgen, auch wegen der guten Kamera-Einstellung. Jetzt weiß ich aber auch, was ich an meinem Revox-Decks (nicht) habe, nämlich Riemen, die zerfallen können. Da machen sich die Vier-Motoren-Laufwerke bezahlt. Bin schon auf den nächsten Teil gespannt. Ich muss aber doch noch kurz den Klugscheißer-Modus einschalten: Am Laufwerk, in der Nähe der Bandführungen und Köpfe sollte nicht mit einem magnetischen Bit-Halter-Schraubendreher herumgewerkelt werden ;-).
Ich habe das heute mal geprüft: Das Magnetfeld von dem Bit-Halter-Schraubendreher wird von dem Schraubendreher hinreichend abgeschirmt, wenn ein Bit eingesetzt ist, dann ist das Magnetfeld mit einem Metallstück als Probe kaum wahrnehmbar. Geht also in Ordnung, so lange man nicht direkt auf dem Kopf damit herumfummelt.
I have never worked on a closed-loop deck, very interesting.
Thank you for sharing, I found it very relaxing, almost like ASMR :-D I have gotten back into cassettes and cassette decks after over 20 years. BTW where is the idler tire in this unit? I don’t see it in any part of the video.
The more modern cassette mechanisms like the one seen in this video use gears instead of idler wheels. This generally makes the mechanisms much more reliable, except on some mechanisms where the gears have a tendency to break...
Does it work for the Yamaha K-98 cassette deck. My still works but I was wondering in case one day the belts crap out
Every model of cassette deck is different, the general procedure is similar, but the steps will vary.
@@DrCassette ok thanks you are the doctor of cassettes. Plz do surgery on mine
@@gabrielgarza3707 Sorry, I don't do commissioned work.
I was looking for some insights in belt replacement for my Kenwood kx 7030. I have not opened up the Deck yet, but looking at your video and the kx 7030 service manual it seems that there must be a big similarity on this mechanical part. I can comment on this after christmas having the belt replaced by then…
Yes just finished replacing the belts on my Kenwood. It is almost the same as the mechanism shown here, if not exactly the same. My small belt was gone as well, all sticky stuff could not get it off my hands. It is a little bit difficult to reach everything, after all, seen this movie, it worked out fine 👍
Congratulations for the successful repair! The rubber residue of molten belts can be washed off with isopropyl alcohol (IPA), but that is of course not good for the skin.
The source for belt is make it yourself get a saw hole cutter find the size you need drill it to the depth you want a piece of plywood fill it with medium grade hardness silicone smooth off the top let it Harden you got a belt with some melted candle wax go round the hole you cut first with an artist's brush.
You should put your belts first in a bag of talcum powder gives better smoother operation
lol, if you don’t care for wow and flutter
Are you kidding me? A cassette deck belt ist a precision component that has major influence on Wow & Flutter, you can't just fabricate some silicone ring for that!
@@DrCassette yes I didn't say it wasn't your pointers is...
Beautiful. Just what I needed! Thanks!
There are still some cheap flat belt packs available on the eBay UK site. Having said that, the best I can now find are approx. 12.00GBP for 30.
Excelent video. Very usefull for kx-650 (has identical mechanism). Changed my belt for kx-930(decent belt, cost me 1 EUR). Unfortunaly my deck plays for 2 seconds and the right wheel stops while everything alse spins for anoteher 3 seconds. I'm desperate, don't know how to repair it. Any sugestion is appreciated. Thank you 👍
Vezi sa inlocuiesti cureaua de la counter...am patit asa cu JVC DD 66...are o celula fotovoltaica care citeste daca se invarte!In general,asta-i problema,dar nu-i exclus si o problema pe partea electronica.Dar,mai mult ca sigur iti lipseste o curelusa,care invarte o rola ceva,iar fotosenzorul pune stop!Cu un pic de atentie,o sa o gasesti!
My KX-930 shows similar issues. Replaced 2 belts. The small belt for the wheel with the silver/black segments was completely molt to a kind of black sticky glue. It seems that these remains have covered on the segment wheel and also the corresponding photovoltaic sensor above. Therefore the KX-930 could not recognize the movement of the wheel. Maybe that´s why the mechanism stops after some seconds. I am trying to remove the stain and hope it´ll work properly again.
Hello,
I just bought a YAMAHA KX W-952 RS Cassette deck everything works but the display of the controls is totally out of order. No reaction from where it can come ??
Thank you for your answers
You mean the vacuum fluorescent display? That could be out because of bad solder joints. That's a common problem.
greetings. Could you tell me the size of the belts and where they go on the capstain pulleys, on the aiwa multicassette player A70, mine deteriorated and I don't have the diagram, thank you very much.
You should be able to find a service manual for your device online, that will tell you all you need to know.
They really have simplified mechanism for later model generations
Is aversge belt 8 inches? Tried to put the one that slipped off my Ultrx two direction cassette back on. It was 14 inch, a 7 inch circle. Strectched out shape? Maybe that is why it don't work. Thank you for your video.
Belts come in all kinds of different shapes and sizes. There is not just one standard size.
Very interesting. I have an old Sharp RT-1155 cassette deck that needs new belts. Any chance to do a video for that model?
It's not very likely that I ever come across one, but if I do this deck certainly seems worth the effort.
@@DrCassette The belts and pinch roller are available (Ebay, et. al.). I opened up the unit and it doesn't look easy to get at the belts and pinch roller. I downloaded the service manual and there's nothing showing how to replace the belts and pinch roller.
What you do with these decks? I mean keep them or sell after repairing or they are given to you by customers for repair? Your videos are class man!
Some cassette decks I keep (like the Yamaha deck seen in this video), other cassette decks I sell. I am not a business, all these cassette decks belong to me, I don't do commissioned work for customers.
@@DrCassette well that's good !!! Passion is everything! Well.... Good luck for you channel and work :)
You can use Marrs Communications for the flat belts. They have premium kits.
Premium kits at premium prices, as discussed in other comments here ;)
Yeah, it's like $50 for a belt and $35 postage to Europe.
Really excellent video!
Thank you! :)
Where can I find belts?
And i hope you won"t forget that cable :-)
Don't worry, I didn't forget the cable :)
Q-tips and isopropyl alcohol are your good friend
Back tension belt. Gets locked into place in play mode and keeps the tape tensioned against the head.
It could just be for back tension, but the cassette deck also has dual capstans... not sure.
@@DrCassette Only one pressure roller is engaged for each direction.
@@JacGoudsmit You are wrong, both rollers engage and this deck has no reverse.
@@eugene4817 Weird...
@@JacGoudsmit It's called 'closed loop' dual capstan transport, nothing weird about it.
Hello, I ask this alot, are cassettes audiophile quality, can they sound as good as a vinyl record & a cd.
No, cassettes are not audiophile quality.
I don't know what audiophile quality means. I had a cheap deck in the 1990s and it wasn't great. Now you can afford top class gear like this Yamaha. It sounds very good. I don't use any dolby but my friends ask me "Where's the hissing of the tape?" We all remember cassette as something inferior but it may sound very good. I can't tell a differnce. I play from cds, vinyl, files, cassettes. But cassettes are rather for older, not contemporary music. I wouldn't record on cassettes like I did in the early 1990s.
@@DrCassette well i have old decks that when i record from cd i show it to several of my friends ,i make the pepsi chalenge and they always choose the tape recorded(no nr) having better sound than the cd,and i don´t use any effect on sound ,all defeat on amplifier and the cd player wasn´t the best at it´s time but very rich in mid frequencies compared to others,regards
Do yo plan to keep it for your self or put it for sale? Regarding rubber belts: I order mine from aliexpress or some chinese sites. Just order some assorted packs of differents lenghts, widths and thicknesses.
I will keep the deck, at least for now. It's good for transferring cassettes to digital because it has the play trim control to restore some of the high frequencies on very old recordings. Also, with one button missing, I wouldn't get nearly as much money as this deck is worth.
hello are you familiar with Tascam cassette players or any brand with a weak rewind issue? I'm having that issue and looking for help on a solution.
Depends on what kind of mechanism you have in your Tascam. It could be bad belts, bad idler wheels or something a lot more complicated.
@@DrCassette I'll take it apart and see what the issue is. Hopefully it's a simple fix. Funny thing is it doesn't do that with all cassettes
Go to geek.com they have a very big selection of flat belts and they're very cheap you can buy a whole assortment of flat belts for a few dollars
Hi, don't see belts on that site.
Sorry it took me so long to reply you have to go in there and say assortment of flat belts they give you and I sent a package I believe it's either 50 or 60 belts and it's a full assortment of all different sizes of flat belts it's not a you don't go in there looking for a specified model number you just go in there and ask for replacement belts assorted and you will find them you find them in geek and you can also find them in wish.com I find them in there all the time and I replace a lot of these belts I've serviced Aegis tape decks all the time instead of going crazy 4 belts but like these Yamahas and Fishers and Sony's all these units like this from the 80s and 90s those belts that you get from the wish and geek we'll fit I haven't had any problems yet
Part 3 nooowwwwww please 😏
Nooooooooo, part 3 is not even edited yet :)
@@DrCassette damn it
Studio sound electronics located in Indiana where I get all my belts
Why do you have models that only have one pressure roller and not 2 like in your video?
If there are two pinch rollers, the cassette deck either has auto reverse, or dual capstan drive. Standard cassette decks only have one pinch roller for one capstan.
Should be the same procedure for KK 493?
I don't know that model, so I can't tell you... Sorry.
@@DrCassette Thanks. May a picture help? 2006 Malaysia manufactured.
18:38 Those two holes shouldn't be aligned like they wore at the beginning?
No, those are not alignment holes. These holes were drilled into the flywheels to fine tune their balancing.
sir, where can i find the playback/rec switch to deoxide it?
This cassette deck does not have a record/play switch, the switching is done electronically.
@@DrCassette my decks left channel is significantly quieter than the right channel. Could you help me find the solution? My machine is very similar (Yamaha k-1000)
Start by making sure the heads are clean and the head alignment has not been changed. Continue by checking the connection from the heads to the amplifier board. From that point onwards things get too complex for a remote diagnosis...
@@DrCassette Heads are fine and clean. Mine has DBX. When turned off, the left channel is a bit louder but is still much weaker than the right one. Could it be one of the capacitors?
Why Yamaha made it so difficult to change belts!!??, I have many cassette decks and it's the first time I see such a complex procedure.. I have a double Yamaha deck and after i saw that I will probably sell it.. that's a nightmare!!
Be assured, Sony can be even worse than this...
@@DrCassette True, very complicated to change the belt. After so much work, my client still thinks I overcharged, apart from the china belts that are all deformed, irregular causing fluctuation in the capstan rotation.
So pinch rollers were ok?
Correct.
i have the Yamaha KX-650 and i can tell you its not fun changing belts on it.
Is the kx 650 a similar process to this video ? I got a free 650 ,FF/RW work fine but play.....it starts to play but it looks like the supply reels not turning .Would new belts solve this problem ?
Good job that, I thought the Aiwa 850 was a pig to work on, it has nothing on this Yamaha!
that small belt is for rewind, if you didn't press rewind you then you wouldn't have noticed.
I think I did test rewind at some point and it worked, but the camera wasn't running.
@@DrCassette What is the purpose of that small gear for small belt?
@@jdgshsjchdjejkd545 This could really be for back tension, but then the belt should not be too tight and back tension torque needs to be adjusted.
Apparently Marrs communications is very good for high quality OEM standard cassette deck belts. Many people on tapeheads.net use Marrs belts, especially on Nakamichi gear. They are quite pricey though but again, supposedly the best around
I have heard of Marrs before, maybe I'll give them a try some time.
Exactly, nobody beats M.A.R.S, unless someone can still find original Nak belts or any other one OEM, preferably before mid 90's on this planet.
Alex Baker
40 bucks for international shipping lol
@@AttilaTheHun333333
The belt kit and S&H from Marrs, or just the shipping (that hurts).
@@pliedtka
Just shipping...belts cost another 20 to 50 bucks. Those have to be really good. Lol
Try A-1 electronics. They might have belts for your future videos
it seems quality..
Thank you 🎵
why two pinch rollers when it"s not auto reverse ?
This cassette deck has a dual capstan drive, meaning both pinch rollers are engaged at the same time, one feeding the tape to the heads, the other one away from the heads. The speed that both capstans run at is carefully balanced to be slightly different. This way the proper tape tension across the heads is ensured. This eliminates the bad influence the supply reel and the cassette shell can have on sound reproduction.
@@DrCassette Thanks for the reply. Just got a free deck from a friend k-1020 and I need belts for it : (
Nice video, I had good luck with belts from turntableneedles.com, didn't measure w&f thou. I also 'lost' grounding spring first time. It's well worth going thru electrical adjustments for PB\Rec\meters\tape speed at least. This deck is a very good deck and is worth keeping.
I will take care of the tape speed in part 3 of this video.
Is reverse one captan is supposed to turn reverse not like that you are placed wrongly the belt
This is not an auto reverse cassette deck. Both capstans are supposed to turn into the same direction. It's called Closed Loop Dual Capstan.
@@DrCassette is have 2 pinch roll and 2 captan im never see anyting like this
@@mikec9112 im navet see anyting like this soo is ok to know this but again is strange
Yeah, many belts on cheaper decks, especially double deckers, turn into black gummy goo stuck to the capstan wheels - many Sony decks being affected - sorry Sony fans, but from mid 90s the company many more and more junk until it seems to make mostly junk. Good made in Japan belts are available for many decks but you have to pay for quality more these days than before. Tapeheads.net, audio forum dedicated to tape decks has members who are knowledgeable and might give advice. Some people people sell calibration tapes, Alex being know for making excellent ones. Also there is W&F measuring soft available from one of the members - a must to have tool for testing and troubleshooting mechanism. If you have really good direct drive deck you can make 3kHz tape for setting speed after belt change - give the belt some time to set in. On the other hand I have question - where can I get spare capstan motor, CCW 12V, adj speed - same as in the Yamaha you have, but also used on many other machines.
How long have you been having dissolved belts in 90s Japanese equipment? This seems to be a rather recent development, when I got into repairing equipment about 10 years ago, you would only find dissolved belts in 1960s/70s Philips equipment and obscure old Korean equipment. Seems to me like the 90s cheap belts held up until fairly recently and are just now starting to fail and dissolve.
As for your motor replacement, I would try to salvage one from another cassette deck. These are indeed very common in 90s cassette decks.
@@DrCassette
Had two dual decks from Sony, one with Dolby S. Both of them had disintegrated belts on both decks - the transports were of no better quality than some portables. But JVC, Technics, Pioneer and Teac from the same time didn't have the same problem. Have JVC and Technics under my bed with JVC having capstan motor dead with worn bearings in one deck (for parts) and Technics still working properly with a little age related issues (worn heads, higher W&F). It's very hard to find used deck in Canada in good condition - Canadians are not in Audio like Europeans. There is a few of us in Ottawa that do DIY audio and repair electronics, some restoring old equipment but in Europe this kind of hobby is more popular. Another thing is that a lot top of the line equipment that was available in Europe and Japan never made it to Canada. You think I have seen Accuphase here - no, but some of my friends in Poland own it. My first contact with Nakamichi and top of the line Akai Aiwa, etc, was in mid 80s because people were bringing them from Germany, with almost every Japanese brand available. You are in way better position to find worthy equipment like this Yamaha in Europe than me in Canada. From all electronic shops that still fix audio, only a few are left, run by Chinese owners and some hard core people who like it because nobody can get the parts or repair costs are too high. Well eventually I fix my Nakamichi somehow and really good CD player from this time that has all the functions and headphone output.
Oh wow, I didn't know HiFi equipment was so uncommon over in Canada...
@@DrCassette
There are good companies here, my friend Mark Kravczenko designs some of the best spkr drivers you can get, but in very limited number, his AMTs are as good as Mundorf. National Research Council has nice anechoic chamber that a lot of North American firms are using, and a lot pioneering research in spkr design was done there. Focus Audio from Toronto Area uses Eton and Scan in their spkrs SimAudio, Bryston, Paradigm are known every where to Hi-end enthusiast. But for most people cheap sound bar and large TV from Best Buy is enough and we have decline in serious audio interest in general, thanks to MP3s and junky headphones from Dr Dre (same price Audio Technica M-50X wipe the floor with them). So this is the sorry state of audio in Canada, at least in Ottawa.
I got serious problems with nice deck from the early 1980s with the "goo monster" belts -- actually with only the capstan big flat belt. A mess to clean up, but then worth it -- lots of Q-tips, paper towel and alcohol -- some people suggest to use stronger chemicals as acetone but I didn't dare to use. I agree w/ your suggestion to calibrate the speed w/ a proper speed tape (3 kHz).
Other source for Cassette deck belts: thakker.eu
Yes i got them from mr thakker aswel! Top quality!
Incredible that such a big brand as Yamaha made such cheap quality components..it's almost..criminal..
You have delay in audio by nearly half second in this video
I know, when my phone records video for too long without interruption the audio goes out of sync.
I am so mad at myself today...for all that have a Technics RS-TR311...do NOT give up on a problem where the tape will not play forward...and will only play backwards...it IS THE center gear that look off yellow, that go between the two drive pins that go thru the tape...it has gone soft and the teeth break off, and they can be purchased and replaced...BUT not for mine..it is TRASH...... because I gave up.
find one for sale by that time decks were bought but not that much used ,so you might find one cheap and recover the part you need, i had a similar case and that´s how i restore it to play again but it was not a yamaha, regards
This seems like a good 3 head deck but its a truly shame to see it uses such a cheap 2 wire motor.
Many 1990's decks were cheapening out so lots of corners had to be cut. Most were not as good as late 70's to mid 80's era decks. Most cassette decks peaked in mid 80's.
that is not service-friendly for belt replacement
Replacing the belts is a bit of a challenge, but I have worked on mechanisms a lot more complex than this one, for example Sony.
try Nakamichi....😂😂 it take 30 min to just locate the belt .. let alone change it..
first i guess
No, I was first ;)