Wierd that people would criticise - they must not be actual techs with a job to do. As a tech for over 50 years I learned a couple things from your excellent video. Also performed the demontrated procedure on an '80s stereo receiver with stunning results. Thanks, man!
Thanks ! Fixed the tuner on the 1980 with your tips. Used a wet(alcohol dipped) toothpick to pinpoint and then scrape the green crud on the axle, then wiped off with cotton q-tip. Now I have complete range of channels!
Used your procedure on my Kenwood KT-6500. I'd been blaming weak stations vs. strong, crowding by nearby stronger stations, signal strength, location, etc. Put in a powered antenna - no real improvement. Your process worked great. I didn't see any corrosion (green or otherwise), but apparently it was there. Soo pleased. Thanks very much!
I might have mentioned that used DeOxit D100, which also allows doses as individual drops to avoid coating the fins and changing their capacitance. Thanks again.
Wow, I just used WD40 and some Qtips, a thinned chopstick to apply WD40 precisely, and a clean tooth brush, to clean and lubricate a Kenwood KT 7500 FM tuner’s air capacitors, hard to believe the difference, all but one station is now at or close to 5 on the signal meter, and can find them all with mute on and either wide or narrow band, and the background hiss is greatly reduced on several problem stations! Thank you Jordan for the demonstration.
Wow Jordan. I have a Marantz 2250B I bought new. Moved that thing all over the world while in the AF. It still works good but the tuning noise was real high just like you demonstrated. I just got done doing what you showed and the stations are quiet while moving the dial and even the stations are stronger. Thanks alot. By the way. I think I watched almost all your videos. Great ones.
You should clean all the circuit plate using compressed air and detail with a small brush and an electronics liquid cleaner, dust is the cause of circuits fails like overheating, the radio looks in good shape to do a restore, change all electrolitycs capacitors and verify resistors and ceramic capacitors tolerance for change if necessary.
To be honest if that was mine I would have just taken the extra time and cleaned the rest up. Grab some compressed air and blown all the rest of that gunk up or use a hover. Also if you don't have a Deoxit just use some IPA fluid with cotton buds same thing. Great video. 👍
Jordan. should of watched your video first? Electric contact cleaner used and I sprayed the "whole" turner (fins and all). I see it didn't mess up my tuner and works ok(never do that again now I know), but my stations seem to be about .5 off where they were before the spraying(102.5 now at 103.0). Don't know if I accidently over turned the tuning knob to the end while cleaning? Is there any way to adjust it .5 and get back to true position? It is a Realistic STA-7 by Radio Shack. Had if forever and still is a good little unit in excellent condition. Thanks
I have a AM FM portable radio that started to get very noisy on AM when I went near 800kHz and it would also block stations in that part of the dial from coming in. Very annoying and sometimes intermittent. I took it apart and found no loose connections or dirty controls. Given I could get it to work properly for a while if I worked the tuning dial back and forth, I felt the problem was in the tuning condenser but it is in a plastic case. With little to lose, I sprayed plastic-safe contact cleaner into the condenser. The radio suddenly only got 3 stations and they were a few hundred kHz higher on the band. I thought that if I let it dry out, the condenser may come back to normal. It slowly did and the stations started to drift back to their correct places on the dial and in an hour all was well. I may not do this to an expensive radio but it saved my $30 one.
I've got a T-7 operating perfect EXCEPT it's Pre-sets. Does not store any tuned station. Have attempted, per manual, to save various tuned-in stations on the 5 Pre-set buttons via the Memory button, no joy. An odd occurrence though, if I hold down Button #5 alone for 4-6 seconds, it slowly moves the tuning wheel/dial to the far right of the band. It may do the same on another of the remaining 4 buttons, I repeated the action multiple times. Any tips?? Haven't opened it up yet since the Pre-set feature is the only fault. I'm comfortable doing so. Note, it's a remarkable tuner! PS. I've searched a few sites today re: the potential of its bad rechargeable battery and changing it out could fix it!??
I noticed in your video you were tuned into the station but the stereo light did not come on. I have the same problem, also I am only able to receive one station on FM, nothing on AM - Pioneer SX-780
You should invest any outdoor FM antenna. I had one of those crappy dipoles antennas and I will never make that mistake again. I get so many FM stereo stations on my receiver now it’s crazy.
Something I need to do with a vintage kenwood stereo tuner amp with the tuning capacitor making that noise on fm stereo. Quite a fair few fine tuning alignment adjustments on that tuning gang for am and fm stereo tuning.
Greetings to you dear friend, how can I make a very powerful external antenna .... I went in the past few days to the old used radio market and got one with a variable metal capacitor like the one you are explaining on now, in addition to the ferrite column and the wire around it and after removing it From the old radio, I did not know how to connect it to make an antenna for the radio, knowing that there are many and many videos on TH-cam explaining this, but I am confused about the correct way, please help
Nice job Jordan. I'm wondering if the problem with my old Kenwood KR-4070 is at all related. I listened to it all day today, and then at some point the station I was listening to started going in and out. Checked with another radio, and the station was fine. Tuned up and down the dial and was receiving okay on stations, but I noticed my "tuning" indicator needle was not moving at all, when normally it behaves just like the one on the Pioneer you show in this video. What do you think? I have not disassembled it yet so I can't comment on the appearance of the capacitor. Note that after shutting down and allowing a cool-off, it is behaving normally.
@@RickRose you can try compressed air before using any product on it. If there's any improvement than you are heading in the right direction. But my best trick is to turn off the stereo and move every button and knob 40 times. It can take 20 minutes without taking any shortcuts. I'm lucky...if I ask my wife she'll do it for me.
I have an old am fm with 7 of these in it .2 seem to be fm one for both and the others don't seem to affect reception at all positions of all marked beforehand
Hi Jordon great video nice receiver. I have A question on a sharp gf777 boombox no fm stns whatsoever I can pick up mw and lw would it be a capacitor issue or like your video deoxidation of fm tuner. Thanks Del. subscriber from London
You should have sprayed clean the PC board too. You already start cleaning, might as well clean the entire interior components of the receiver not just a certain portion!
Jordan would you have any low cost suggestions on how to get better am reception inside the radio?would adjusting the capacitor s do anything?replace them?any ideas would be appreciated.
Most of the am radios are just chips in these sets so there are little to no caps to replace in the am. It's really dependent on the antenna used and if the alignment is good. If your am reception sucks,ake sure there isn't anything near by that would interfere. This includes cfl and led lamps, cell phone chargers, laptops and their chargers, or anything with a switching power supply
The pioneer continues to work great. Just have to remember to exercise the tuner back and forth once in awhile. If you have a small radio that does the same the problem is most of them have sealed tuners that you can't clean. You can rock them back and forth repeatedly until they clear up but ultimately it's a flawed design
They help align the tuning condenser by fine tuning the capacitence of each row of fins. YOU SHOULD NEVER TOUCH THEM without an alignment generator or proper knowledge of how to align the tuner or you can make it useless.
Thanks. While you're in there, you might have cleaned out the dust first. And then come in with the deoxit. That way the dust does not cake to the board where the deoxit spills. Thnx anyway, worked for me.
@@magicfan4ever888 I respectfully disagree. As a professional, you cant waist time doing unnecessary work. Unless the customer wants to pay for a thorough cleaning to make it look pretty, the professional thing to do is repair the unit and get it out the door. This keeps repair costs reasonable. It's the amateur tech that can spend the afternoon doing unpaid cleaning for the sake of ascetics.
Mark Symbala they're stiff due to lubricants hardening. Spray inside the control - not from the front- shaft and work the control back and forth. The deoxit will usually clear this up. Lever switches too. Gotta take it apart
@@vegetablepolice1 most are adjustable if transformers. The trimmer capacitors are typically on the tuning condenser only. The others are for Am and FM mpx alignment. The FM if is fixed by ceramic 10.7mhz filters for the IF
Dude, before trying to show any of your ''useful'' tips I think the best thing you should have done is giving this nice tuner a proper all throughout clean and then, and only then, attempt to clean the variable capacitor and by the way. a jet of air would do a better job than what you've used. Cleaning liquids are known to cause capacitance unless you allow them to dry for a day or so.
A jet of air will not always do it. My stereo is doing this, and I did the jet of air thing years ago. But that no longer does the trick. Yes.... dust between the plates can cause this as well. But eventually the grounding gets oxidized and in addition to dust between the plates.
"Hypothetically" What should someone do If you make the mistake of spraying the sh!t out of the tuning condensor????? Is there a last ditch effort to resurrect
Wierd that people would criticise - they must not be actual techs with a job to do. As a tech for over 50 years I learned a couple things from your excellent video. Also performed the demontrated procedure on an '80s stereo receiver with stunning results. Thanks, man!
Thanks ! Fixed the tuner on the 1980 with your tips. Used a wet(alcohol dipped) toothpick to pinpoint and then scrape the green crud on the axle, then wiped off with cotton q-tip. Now I have complete range of channels!
I know this is old, but that DioxIT has a bit of lubricant in it, so best to use that vs alcohol. These tuners need that bit of lubrication.
Used your procedure on my Kenwood KT-6500. I'd been blaming weak stations vs. strong, crowding by nearby stronger stations, signal strength, location, etc. Put in a powered antenna - no real improvement. Your process worked great. I didn't see any corrosion (green or otherwise), but apparently it was there. Soo pleased. Thanks very much!
I might have mentioned that used DeOxit D100, which also allows doses as individual drops to avoid coating the fins and changing their capacitance. Thanks again.
Wow, I just used WD40 and some Qtips, a thinned chopstick to apply WD40 precisely, and a clean tooth brush, to clean and lubricate a Kenwood KT 7500 FM tuner’s air capacitors, hard to believe the difference, all but one station is now at or close to 5 on the signal meter, and can find them all with mute on and either wide or narrow band, and the background hiss is greatly reduced on several problem stations! Thank you Jordan for the demonstration.
Wow Jordan. I have a Marantz 2250B I bought new. Moved that thing all over the world while in the AF. It still works good but the tuning noise was real high just like you demonstrated. I just got done doing what you showed and the stations are quiet while moving the dial and even the stations are stronger. Thanks alot. By the way. I think I watched almost all your videos. Great ones.
Love your thoughtful insightful well documented videos. Have recently renewed my interest in electronics from watching your work. Keep em coming!
You should clean all the circuit plate using compressed air and detail with a small brush and an electronics liquid cleaner, dust is the cause of circuits fails like overheating, the radio looks in good shape to do a restore, change all electrolitycs capacitors and verify resistors and ceramic capacitors tolerance for change if necessary.
To be honest if that was mine I would have just taken the extra time and cleaned the rest up. Grab some compressed air and blown all the rest of that gunk up or use a hover. Also if you don't have a Deoxit just use some IPA fluid with cotton buds same thing. Great video. 👍
Thinking the same thing.
Jordan. should of watched your video first? Electric contact cleaner used and I sprayed the "whole" turner (fins and all). I see it didn't mess up my tuner and works ok(never do that again now I know), but my stations seem to be about .5 off where they were before the spraying(102.5 now at 103.0). Don't know if I accidently over turned the tuning knob to the end while cleaning? Is there any way to adjust it .5 and get back to true position? It is a Realistic STA-7 by Radio Shack. Had if forever and still is a good little unit in excellent condition. Thanks
Great question...Did you ever get an answer?
You can realign the physical station needle, there are videos here on YT on the procedure.
Why didnot you clean the chasis? dust gives origin to other fails.
Since you brought up RF touch up, how do you do it?
I have a AM FM portable radio that started to get very noisy on AM when I went near 800kHz and it would also block stations in that part of the dial from coming in. Very annoying and sometimes intermittent. I took it apart and found no loose connections or dirty controls. Given I could get it to work properly for a while if I worked the tuning dial back and forth, I felt the problem was in the tuning condenser but it is in a plastic case. With little to lose, I sprayed plastic-safe contact cleaner into the condenser. The radio suddenly only got 3 stations and they were a few hundred kHz higher on the band. I thought that if I let it dry out, the condenser may come back to normal. It slowly did and the stations started to drift back to their correct places on the dial and in an hour all was well. I may not do this to an expensive radio but it saved my $30 one.
I've got a T-7 operating perfect EXCEPT it's Pre-sets. Does not store any tuned station. Have attempted, per manual, to save various tuned-in stations on the 5 Pre-set buttons via the Memory button, no joy.
An odd occurrence though, if I hold down Button #5 alone for 4-6 seconds, it slowly moves the tuning wheel/dial to the far right of the band. It may do the same on another of the remaining 4 buttons, I repeated the action multiple times. Any tips?? Haven't opened it up yet since the Pre-set feature is the only fault. I'm comfortable doing so.
Note, it's a remarkable tuner!
PS. I've searched a few sites today re: the potential of its bad rechargeable battery and changing it out could fix it!??
thank you.got the same pioneer n been wondering whats going on.will give it a try.can i spray and brush the rest of the board also?
I noticed in your video you were tuned into the station but the stereo light did not come on. I have the same problem, also I am only able to receive one station on FM, nothing on AM - Pioneer SX-780
You should invest any outdoor FM antenna. I had one of those crappy dipoles antennas and I will never make that mistake again. I get so many FM stereo stations on my receiver now it’s crazy.
i didnt think you were going to stop moving the turner knob...i almost went to a truck site .
Verygood tip for f.m. radio.
Now a days,most tuning capacitors are pvc types.
Is there any solution for such fault?
Something I need to do with a vintage kenwood stereo tuner amp with the tuning capacitor making that noise on fm stereo.
Quite a fair few fine tuning alignment adjustments on that tuning gang for am and fm stereo tuning.
Greetings to you dear friend, how can I make a very powerful external antenna .... I went in the past few days to the old used radio market and got one with a variable metal capacitor like the one you are explaining on now, in addition to the ferrite column and the wire around it and after removing it From the old radio, I did not know how to connect it to make an antenna for the radio, knowing that there are many and many videos on TH-cam explaining this, but I am confused about the correct way, please help
Nice job Jordan. I'm wondering if the problem with my old Kenwood KR-4070 is at all related. I listened to it all day today, and then at some point the station I was listening to started going in and out. Checked with another radio, and the station was fine. Tuned up and down the dial and was receiving okay on stations, but I noticed my "tuning" indicator needle was not moving at all, when normally it behaves just like the one on the Pioneer you show in this video. What do you think? I have not disassembled it yet so I can't comment on the appearance of the capacitor. Note that after shutting down and allowing a cool-off, it is behaving normally.
Just wondering if you found the solution on the Kenwood.
@@tf7274 No I never got up the gumption to open it up. I've got a Bluetooth input connected to it and use it that way, as just an amplifier.
@@RickRose you can try compressed air before using any product on it. If there's any improvement than you are heading in the right direction. But my best trick is to turn off the stereo and move every button and knob 40 times. It can take 20 minutes without taking any shortcuts. I'm lucky...if I ask my wife she'll do it for me.
@@tf7274 Cool I will try that--Thanks!
I used electrical contact cleaner but seemed top have caused more of a problem on that mechanism. Would RP7 be ok to use?
I used contact cleaner on my tuning capacitor [astro-sonic] and it didn't hurt the fins at all
I found one of these tuning thingies in my grandpas drawer
Can you still use it for something?
And mines a bit different from this one
Would this make this thing easier to turn back and forth to free it up
I used 3 in 1 oil and it moves a whole lot better not so stiff to turn back and forth what do I use to clean up the contacts
I have an old am fm with 7 of these in it .2 seem to be fm one for both and the others don't seem to affect reception at all positions of all marked beforehand
Good morning excelent video.
Hi Jordon great video nice receiver.
I have A question on a sharp gf777 boombox no fm stns whatsoever I can pick up mw and lw would it be a capacitor issue or like your video deoxidation of fm tuner.
Thanks Del.
subscriber from London
More likely a bad switch or missing voltage to fm
@@JordanPier thanks Jordon.Look forward to catching up on all your uploads!
You should have sprayed clean the PC board too. You already start cleaning, might as well clean the entire interior components of the receiver not just a certain portion!
Jordan would you have any low cost suggestions on how to get better am reception inside the radio?would adjusting the capacitor s do anything?replace them?any ideas would be appreciated.
Most of the am radios are just chips in these sets so there are little to no caps to replace in the am. It's really dependent on the antenna used and if the alignment is good.
If your am reception sucks,ake sure there isn't anything near by that would interfere. This includes cfl and led lamps, cell phone chargers, laptops and their chargers, or anything with a switching power supply
Jordan Pier thanks for the info my radio is a Panasonic RX 5020 from 1980.its in great shape the am reception could use some work.
Jordan Pier how about adjusting or replacing the electoric capacitors?would that help with am reception¿
Jordan how is your pioneer now? I have a radio that makes those noises any suggestions about cleaning it?
The pioneer continues to work great. Just have to remember to exercise the tuner back and forth once in awhile.
If you have a small radio that does the same the problem is most of them have sealed tuners that you can't clean. You can rock them back and forth repeatedly until they clear up but ultimately it's a flawed design
For small radios, spray Contact Cleaner in the variable capacitor and let it dry for a few minutes. It works fine, no damages or capacitance loss.
Jordan what are those seven terminals on the top of the capacitor? What's it for?how do they work?
They help align the tuning condenser by fine tuning the capacitence of each row of fins. YOU SHOULD NEVER TOUCH THEM without an alignment generator or proper knowledge of how to align the tuner or you can make it useless.
What is re align the RF ?
Thanks. While you're in there, you might have cleaned out the dust first. And then come in with the deoxit. That way the dust does not cake to the board where the deoxit spills. Thnx anyway, worked for me.
I AGREE WITH YOU 100%.... NOT TOO PROFESSIONAL, THAT'S FOR SURE! I'M GLAD HE'S NOT MY TECHNICIAN.
@@magicfan4ever888 I respectfully disagree. As a professional, you cant waist time doing unnecessary work.
Unless the customer wants to pay for a thorough cleaning to make it look pretty, the professional thing to do is repair the unit and get it out the door. This keeps repair costs reasonable.
It's the amateur tech that can spend the afternoon doing unpaid cleaning for the sake of ascetics.
What would you do for old 77ish digital tuner?
uyyyyyyaaaaaeeehh!
I got some cleaner on the fins on accident!
Is it fucked now for sure?
Flush with CRC QD contact cleaner and let dry. Dont hesitate to saturate it. The qd will displace the cleaner like deoxit and will dry with no residue
@@JordanPier Well, I hope that he read your comment, thank you Jordan.
Thanks for share!
Jordan on my Panasonic rx-5020 the volume knobs are tight.any suggestions on that.the levers?
Mark Symbala they're stiff due to lubricants hardening. Spray inside the control - not from the front- shaft and work the control back and forth. The deoxit will usually clear this up. Lever switches too. Gotta take it apart
Jordan Pier thanks
IPA would be my choice,it cleans and evaporates very fast,no oily residu either
Boards are filthy. I do a major overhaul on all my vintage. Btw not good to do what u did. Easier method is to clean btwn blades. Anyhow.
Thanks
Useful video
Thank you
What are the metal squares with screws.
Something you don't touch without alignment tools, equipment and a service manual
So capacitors for am and fm .
@@vegetablepolice1 most are adjustable if transformers. The trimmer capacitors are typically on the tuning condenser only. The others are for Am and FM mpx alignment. The FM if is fixed by ceramic 10.7mhz filters for the IF
FM mono works fine, switch to FM Stereo, one channel goes out, other channel loses 95% power? Why? Old 60's tunner...
very interesting!
Dude, before trying to show any of your ''useful'' tips I think the best thing you should have done is giving this nice tuner a proper all throughout clean and then, and only then, attempt to clean the variable capacitor and by the way. a jet of air would do a better job than what you've used. Cleaning liquids are known to cause capacitance unless you allow them to dry for a day or so.
A jet of air will not always do it. My stereo is doing this, and I did the jet of air thing years ago. But that no longer does the trick. Yes.... dust between the plates can cause this as well. But eventually the grounding gets oxidized and in addition to dust between the plates.
Thank you!
No, that awful noise was Jazz! (I love air gap caps!)
If want anyone to see anything point. Not with your finger but with a dedicated pointer.
"Hypothetically" What should someone do If you make the mistake of spraying the sh!t out of the tuning condensor????? Is there a last ditch effort to resurrect
Douse it in denatured or 99% isopropyl alcohol to displace the cleaner, then blow it out and dry it
That sounds just like it Sansui 6060
👏👏👏👏👏👏👏👏👏
Ok! Who's turn is it to clean the damn shop? Put a paint brush on that thing or something before getting that shite all over the place.
Ok dude we get it Jesus Christ ...
Show us how to fix it
красава
yes I thought it was something like this just clean it rather than replace it