It sounds great. The thing that actually didn't sound great was the sped up 15 ips. I'm wondering if it's an EQ thing with the heads and speed. Even the shedding tape sounded pretty darn good at the beginning. Thank you for posting.
I have this exact model but somehow accidentally caused the motor to go into high speed and The buttons to no longer function as well as the input and output no longer work is there any idea which transistor or diode may have gotten blown?
Nice and easy repair job of this machine with the repairs of the faulty sound switches with de-oxit contact cleaner. Sounds like u need an air conditioner in your workshop on those hot days,,,if the fan isn't keeping you cool going flat out. Enjoy your bike ride too.
Air con in the house. Not shop. Walls insulated but not ceiling so the heat blasts through. I should put insulation up there. Bike ride was hot even at 100k on freeway.
@@12voltvids Ok. Good how u do have air conditioning in house,,but not workshop,,,but I guess the workshop is behind house. Sounds like u need a small portable air conditioned cabin on your bike too,,,if it,s too hot riding the bike in the heat. Didn't know that u had no insulation in the ceiling of your workshop,,,as I thought it would have been in place at the time the workshop was built back then.
@@nickfrench7372 I have central air in the house but the shop isn't in the house yet. It will be as soon as I can convince my 20 year old he should get his own place. My 22 year old is gone but my son is too smart. He knows how good he has it here and pays his rent and keeps his mouth shut. Once he flies the coop I will be moving my work bench onto the den. I have a second separate window shaker in my office where I edit because the computer and plasma monitors throw a ton of heat.
Do you have any idea how tiny rubber belts for tape players are made? I have an ancient AIWA portable cassette player and can't find a source to replace the drivebelts. It just made me wonder who the hell makes such specialty items and whether they could make them to spec. and how on god's earth one makes those precise little belts in the first place!
Ebay. I've bought a few packs of belts from there and they've all been fine. For very small belts you can also look at square section o-rings if you can't find actual belts in a very small size.
Hello. I have no base of electronics. I need to repair a Onkyo tuner from 1991. Stereo does not work. I bought a Fluke meter. From 5 youtube videos, it could be that I could try to turn up or down with a screwdriver a potentiometer. One after the other taking care to memorize the initial position. My big fear is the 220V curreent as it has to be lit on, while trying to setup. What part is the most dangerous that I have to avoid touching? Am I allowed to touch the chassis? Thanks. It is just my life I’m afraid to lose.
Your mains will be on the primary side of the trabsformer. They are usually shielded pretty good with warnings. The secondary side of the yransformer is lower voltage. I always recommend using an isolation yransformer. If that is not possible make your measurements with one hand. Clip your negative probe to ground with an alligator clip and make your measurements with the other probe using 1 hand only. Keep your other hand on your pocket and wear insulated shoes. That way if you accidentally touch an energized part you will not be electrocuted as there is no path across your heart to ground. One hand behind your back or in your pocket is a great safety measure that everyone working around electricity should do. Just like a bird can sit on 60,000 volt wires and not be harmed as there is no path to ground. This is how an isolation transformer protects. Removes that path to direct ground
hello. just watched your technics video with display light problem when your esr did not help but your meter found out that the capacitor died inside. There you put isolating tape on the current metal soldering, which is, I suppose an additional security for me, and enough security for semi or total professionals like you. Thanks a lot. I currently have 3 other tuners with problems. A Kenwood KT-1100 sd which only lit after 2 hours and now after 10 hours does not show any sign of life....so I’ll try with a hairdryer. A Kenwood KT-1100 which lights up but does not give any tone, from one month to the other. Then a JVC top of the line which I got from a gangster on ebay and never caught any signal nor frequency. So I’ll start with the small Onkyo. Thanks for keeping me alive. Greetings from Germany.
I just opened the T-404 from Onkyo, nothing in it, nearly empty :-). and after 10 minutes found the right potentiometer and now I have stereo signal and I fixed it. Wow. Amazing. So glad, I wanted to 1. give it to an Onkyo fan and 2. throw it away.
@@brianwood5220 What the foot? Well I knew it had been on the bench, and while editing I saw a clue that one had rolled behind the unit, so I popped the unit apart again and there it was winking at me as if to say "gotcha"
Nice job! Once again, these glass heads have another victim... I know some of these Akai reel to reel can be fitted with a special kit for 15ips. It includes a capstan adaptor with a screw and a thinner roller, and an eventual mod and additional switch on the reel motor. You could originally find these for early models that needed that same trick to change from 3,75 to 7,5, but here the electronics and tension levers are probably unfit to any proper simple modification. Special motors could be fitted, but their cost + glass heads are making this a non sense if you can switch to a good TEAC or REVOX machine. Some of the best Otari were designed for 15 and 30 IPS only, but designed specifically for this use, and known for beeing selective on tape quality. With old band material, 15 IPS is a no way on Glass heads!
Finally someone that understands how bad the glass heads were. As to 15ips just changing the capstan size gets you half way there. The eq is totally different. My akai 4000 you remove the sleeve for 3 3/4 but it also has a switch to change the eq and probably the bias. My teac 4 track, now that is a serious machine that saw lots of use in small studios.
@@12voltvids Exactly what I was thinking, the equalisation wouldn't be right. My go-to machine is a Ferrograph Super-7, with the Record head replaced with an extra playback head so I can switch between 1/2 and 1/4 track playback. That one does 10.5" NAB spools at up to 15ips.
@@video99couk I had a client bring me a machine I think it was a Sony, and it had the capstan sleeve so 1 7/8 becomes 3 3/4, 3 3/4 7.5 and 7.5 becomes 15. I actually got in an argument with them over the EQ and they insisted it makes no difference. So I took a tape @ 7.5 and ran it at the 7.5 setting and then again at the 3.75 setting with the sleeve on, and did the same with a 3.75 tape at both the 3.75 and 1 /78 motor speed. A 7.5 tape played with the sleeve in the 3.75 setting sounded too bright. A 3.75 in the 1 7/8 motor speed sounded even brighter like someone cranked the treble control, so I imagine that a 15IPS tape played with the deck set for 7.5 would also have the same EQ mismatch. The best sounding reel to reel I own, by a country mile in my Teac 3340. It only has 7.5 and 15IPS but the sound off that recorder is bloody awesome, for analog anyway.
@@petercamacho1462 You'll have to remove the faceplate, the part covering the bulbs will come off with it, just like at 13:05 (those green and white wires are for the bulbs, the black foam strips are there to block any stray light). After that the bulbs will be easily accessible located below the VU needle. It's kind of tight since it'll have to fit back underneath the faceplate so I ended up using 3mm flat top LEDs on mine with an appropriate resistor in series with each LED since from what I remember all of the bulbs were wired in parallel.
Yes Paul mccartney talks about this on a TH-cam video. I believe he said magical mystery tour was recorded on a 4 track. He does a demo on how it was done.
A buddy of mine has one of those too. His is a Roberts, which is an Akai. I have an 8 track recorder to service and do a demo recording on one of these days. Never enough time in the day I tell you.
Perhaps a demo on my 4 track is in order some day, but I don't feel like playing my guitar. I don't want to embarrass myself as I haven't played it in 15 years
Back in the day i lived in a communist country. For us the GX heads was the way to go, because you couldn't find any kind of spare heads (or almost any kind of parts). So a head that doesn't wear was essential
@@12voltvids i meant cassette decks. back in the day i had a Dual C809 with permalloy heads that wear out in a little bit more than 1 year. Then in 1981 bought an Akai GX-F-90 with GX heads that works to this day
@@michaelfreiberg8057 never have managed to wear out the amorphoris head on my Technics rsm275 and it has also thousands of hours on it. If you had a permaloy head then yes it will wear but sendust and amorphous and many other hard alloys no, they don't wear and have superrior electromagnetic properties compared to ferrite and the glass head is just a ferrite head set in glass. They sound pretty dull by comparison and they crack. In temperature swings the ferrite expands and can cause the glass to crack and then the ferrite shifts slightly where is sounds like an azimuth error but you can never get it set because it shifts. If glass heads were so great then everyone would have used them.
Nice stress free repair for a change :-D
Dispite the machines failings, it's a smashing bit of kit.
Love the real analog meters.
Good video. I have the same model. Your video answered a question I had on mine
Wow, almost at 100k subs! I remember when you only had 5k!
I love their use of hex head cap screws on the front panel.
They look cool
Very pretty machine.
It sounds great. The thing that actually didn't sound great was the sped up 15 ips. I'm wondering if it's an EQ thing with the heads and speed. Even the shedding tape sounded pretty darn good at the beginning. Thank you for posting.
What is the song that the video speed had to be doubled to in order to sound right?
Did this one have the shoulder washer/insulator for the transistor installed? Just curious.
I have this exact model but somehow accidentally caused the motor to go into high speed and The buttons to no longer function as well as the input and output no longer work is there any idea which transistor or diode may have gotten blown?
Nice and easy repair job of this machine with the repairs of the faulty sound switches with de-oxit contact cleaner.
Sounds like u need an air conditioner in your workshop on those hot days,,,if the fan isn't keeping you cool going flat out.
Enjoy your bike ride too.
Air con in the house. Not shop. Walls insulated but not ceiling so the heat blasts through. I should put insulation up there.
Bike ride was hot even at 100k on freeway.
@@12voltvids Ok. Good how u do have air conditioning in house,,but not workshop,,,but I guess the workshop is behind house.
Sounds like u need a small portable air conditioned cabin on your bike too,,,if it,s too hot riding the bike in the heat.
Didn't know that u had no insulation in the ceiling of your workshop,,,as I thought it would have been in place at the time the workshop was built back then.
@@nickfrench7372
I have central air in the house but the shop isn't in the house yet. It will be as soon as I can convince my 20 year old he should get his own place. My 22 year old is gone but my son is too smart. He knows how good he has it here and pays his rent and keeps his mouth shut. Once he flies the coop I will be moving my work bench onto the den. I have a second separate window shaker in my office where I edit because the computer and plasma monitors throw a ton of heat.
Another interesting job.
What other switches could it be? Mine plays sound only right channel in reverse. Also my rewind in reverse is slow. I have a akai GX230D
It's really weird hearing modern music issuing forth from an early 70's era device like that. Speaking of anachromechanisms, I love your watch!
So do I. Its a fairly rare model. I bought it about 15 years ago and have never changed the battery as it is solar powered.
@@12voltvids Very cool. What make/model is it? I'm curious.
Its a Casio. 3022 if I remember. Can't see the model number right now too dark to see it.
@@12voltvids Thank you kind sir. Have a good night.
Do you have any idea how tiny rubber belts for tape players are made? I have an ancient AIWA portable cassette player and can't find a source to replace the drivebelts. It just made me wonder who the hell makes such specialty items and whether they could make them to spec. and how on god's earth one makes those precise little belts in the first place!
Nope have no idea where to get. Try flebay
@@12voltvids Will do. Thanks. Great channel.
I am a watchmaker and buy gaskets often, you can get a job lot of sizes of larger ones these look exactly like drive belts up to 50mm in size.
Ebay. I've bought a few packs of belts from there and they've all been fine. For very small belts you can also look at square section o-rings if you can't find actual belts in a very small size.
Well isn’t this convenient. I’m actually meeting a guy today to purchase one of these units.
This is the outstanding moments I ever viewed, and everything else.😎
(very underrated)
I bought one brand new and used it for years, until the simul. Sync buttons became extremely un reliable. Glad I sold it.
I just got a panasonic reel to reel that the seller said had a weak output in one channel so i figured something in this video might give me a clue
Hello. I have no base of electronics. I need to repair a Onkyo tuner from 1991. Stereo does not work. I bought a Fluke meter. From 5 youtube videos, it could be that I could try to turn up or down with a screwdriver a potentiometer. One after the other taking care to memorize the initial position. My big fear is the 220V curreent as it has to be lit on, while trying to setup. What part is the most dangerous that I have to avoid touching? Am I allowed to touch the chassis? Thanks. It is just my life I’m afraid to lose.
Your mains will be on the primary side of the trabsformer. They are usually shielded pretty good with warnings. The secondary side of the yransformer is lower voltage. I always recommend using an isolation yransformer. If that is not possible make your measurements with one hand. Clip your negative probe to ground with an alligator clip and make your measurements with the other probe using 1 hand only. Keep your other hand on your pocket and wear insulated shoes. That way if you accidentally touch an energized part you will not be electrocuted as there is no path across your heart to ground. One hand behind your back or in your pocket is a great safety measure that everyone working around electricity should do. Just like a bird can sit on 60,000 volt wires and not be harmed as there is no path to ground. This is how an isolation transformer protects. Removes that path to direct ground
hello. just watched your technics video with display light problem when your esr did not help but your meter found out that the capacitor died inside. There you put isolating tape on the current metal soldering, which is, I suppose an additional security for me, and enough security for semi or total professionals like you. Thanks a lot. I currently have 3 other tuners with problems. A Kenwood KT-1100 sd which only lit after 2 hours and now after 10 hours does not show any sign of life....so I’ll try with a hairdryer. A Kenwood KT-1100 which lights up but does not give any tone, from one month to the other. Then a JVC top of the line which I got from a gangster on ebay and never caught any signal nor frequency. So I’ll start with the small Onkyo. Thanks for keeping me alive. Greetings from Germany.
I just opened the T-404 from Onkyo, nothing in it, nearly empty :-). and after 10 minutes found the right potentiometer and now I have stereo signal and I fixed it. Wow. Amazing. So glad, I wanted to 1. give it to an Onkyo fan and 2. throw it away.
@@thevintagehifiambassador8524
Like most of the modern stuff. A big empty box.
Nice easy one for you. I hope you enjoyed your bike ride.
I put this thing back together and was missing 1 rubber foot. Never believe where I found it.
@@12voltvids On the end of your screwdriver?
@@brianwood5220
Inside the cabinet.
@@12voltvids I've done that before. How long did it take you to find it?
@@brianwood5220 What the foot? Well I knew it had been on the bench, and while editing I saw a clue that one had rolled behind the unit, so I popped the unit apart again and there it was winking at me as if to say "gotcha"
Nice job! Once again, these glass heads have another victim...
I know some of these Akai reel to reel can be fitted with a special kit for 15ips. It includes a capstan adaptor with a screw and a thinner roller, and an eventual mod and additional switch on the reel motor. You could originally find these for early models that needed that same trick to change from 3,75 to 7,5, but here the electronics and tension levers are probably unfit to any proper simple modification. Special motors could be fitted, but their cost + glass heads are making this a non sense if you can switch to a good TEAC or REVOX machine. Some of the best Otari were designed for 15 and 30 IPS only, but designed specifically for this use, and known for beeing selective on tape quality. With old band material, 15 IPS is a no way on Glass heads!
Finally someone that understands how bad the glass heads were. As to 15ips just changing the capstan size gets you half way there. The eq is totally different. My akai 4000 you remove the sleeve for 3 3/4 but it also has a switch to change the eq and probably the bias. My teac 4 track, now that is a serious machine that saw lots of use in small studios.
@@12voltvids Exactly what I was thinking, the equalisation wouldn't be right. My go-to machine is a Ferrograph Super-7, with the Record head replaced with an extra playback head so I can switch between 1/2 and 1/4 track playback. That one does 10.5" NAB spools at up to 15ips.
@@video99couk
I had a client bring me a machine I think it was a Sony, and it had the capstan sleeve so 1 7/8 becomes 3 3/4, 3 3/4 7.5 and 7.5 becomes 15.
I actually got in an argument with them over the EQ and they insisted it makes no difference. So I took a tape @ 7.5 and ran it at the 7.5 setting and then again at the 3.75 setting with the sleeve on, and did the same with a 3.75 tape at both the 3.75 and 1 /78 motor speed.
A 7.5 tape played with the sleeve in the 3.75 setting sounded too bright. A 3.75 in the 1 7/8 motor speed sounded even brighter like someone cranked the treble control, so I imagine that a 15IPS tape played with the deck set for 7.5 would also have the same EQ mismatch. The best sounding reel to reel I own, by a country mile in my Teac 3340. It only has 7.5 and 15IPS but the sound off that recorder is bloody awesome, for analog anyway.
I could have hours of fun with that deck :-))
I was going to ask about the name of the clock song from Triple Scoop and you come up with copyright infringement from playing on TH-cam...
Candice burns - smile. She is from Calgary.
Hello,please send meaphotoof the record headwires
Hi Do you work on Akai GX-77 reel to reel tape decks
I have worked on many reel to reel tape decks.
@@12voltvids where are you located
West coast Canada.
@@12voltvids oh wow, that would cost me a big chunk just to get it to you. I thought you were somewhere in the lower 48.
i have same reel to reel can i change bulbs in the meters to led please help great video by the way akai Gx360d
Yes you can put in led lights.
@@12voltvids Will I have to take the meters apart to put LEDs inside or will they be located outside of the meter
@@petercamacho1462 You'll have to remove the faceplate, the part covering the bulbs will come off with it, just like at 13:05 (those green and white wires are for the bulbs, the black foam strips are there to block any stray light). After that the bulbs will be easily accessible located below the VU needle. It's kind of tight since it'll have to fit back underneath the faceplate so I ended up using 3mm flat top LEDs on mine with an appropriate resistor in series with each LED since from what I remember all of the bulbs were wired in parallel.
Interesting, Beatles ,4 track ETC.
just did a Google search 9 channel on some IBM machines.
Yes Paul mccartney talks about this on a TH-cam video. I believe he said magical mystery tour was recorded on a 4 track. He does a demo on how it was done.
Awesome.😎
(very underrated)
It seems to be reel to reel week
I had 2 come in from same client.
I had an AKAI rtr with an 8 track on the side
A buddy of mine has one of those too. His is a Roberts, which is an Akai.
I have an 8 track recorder to service and do a demo recording on one of these days. Never enough time in the day I tell you.
warm it is 120 degrees 75 percent humid rest of month like this muggy weather -ca desert wish i was in canada wc
Heat wave hehe. Away from the water it is heading to 40c today. 110 on the obsolete scale.
Explain the 4 tracks one more time. Pleaseee.
Sorry I'm tracked out!
@@12voltvids meaning you are tired? then thanks.
@@robinsonsoto8471 It was my attempt at being sarcastic, but you missed it.
Perhaps a demo on my 4 track is in order some day, but I don't feel like playing my guitar. I don't want to embarrass myself as I haven't played it in 15 years
@@12voltvids I do understand.
Back in the day i lived in a communist country. For us the GX heads was the way to go, because you couldn't find any kind of spare heads (or almost any kind of parts). So a head that doesn't wear was essential
I have never had heads wear on any of my tape decks and I have an old akai 1710 that has probably had over 1000 tapes on it.
@@12voltvids i meant cassette decks. back in the day i had a Dual C809 with permalloy heads that wear out in a little bit more than 1 year. Then in 1981 bought an Akai GX-F-90 with GX heads that works to this day
@@michaelfreiberg8057 never have managed to wear out the amorphoris head on my Technics rsm275 and it has also thousands of hours on it. If you had a permaloy head then yes it will wear but sendust and amorphous and many other hard alloys no, they don't wear and have superrior electromagnetic properties compared to ferrite and the glass head is just a ferrite head set in glass. They sound pretty dull by comparison and they crack. In temperature swings the ferrite expands and can cause the glass to crack and then the ferrite shifts slightly where is sounds like an azimuth error but you can never get it set because it shifts. If glass heads were so great then everyone would have used them.
@@12voltvids they were great for us. as i said, communist country, no imports from the west, no spare parts :)