Your father has exceptional taste.

Would any of those caps you changed affect tweeter performance? I just scooped a pair and already know the caps need changing.

I recently found an old JVC-400 receiver for cheap. Everything was working when I got it. The other day the LCD screen went dark. I am handy at refurbishing electronics but this one is complex. Is this a common problem? Any idea on how to troubleshoot and repair?

i dont get why you dont show the work part, you just show after its back together, which i get why , you need a camera man or some way of holding the camera, cool vid otherwise. im really green and want to learn

I have a receiver that turns on and does not emit sound, if I increase the volume with the control it makes pac at each touch. I have no idea about electronics, but I was researching and it has transistors 2SB1429 first in green and 2SD2155 in black, I'm afraid they are burnt and are no longer available.

Hi I have a JVC RX-6010V is no audio or signal.. Then another DENON AVR-1000 GOES PROTECTED..HOW TOreset it.

I have the same preamplifier. I decided not to modify with different part. This preamplifier was made back to deliver certain tonal characteristic back when it was made with the parts available that period. If anyone changes parts, that particular sound charateristic will be gone for good. I know by upgrading with today's higher quality parts will make the preamp sounds much more sharp, clear, precise and overall better but that's not the original sound the originally creator intended back then. The only part I will consider modifying is upgrading the power supply with better rectifier and 3 cans of electrolytic capacitors for safety reason.

I have a JVC AK300 where the right channel intermittently going in and out, any ideas? It will self correct if i turn the volume up or in a couple hours it will turn on the right channel, not even the VU meter shows any output, is it in my pre amp section?

Thanks .

Were any of the capacitors marked wrong on the 2220 amp board?

Hello OldTechFan: What sonically changed with the capacitor upgrade? What is the "best" capacitor to use for the "best" change/upgrade? I see people use Russian paper-and-oil caps is guitars and guitar amps, etc. There has to be a Holy Grail cap for speaker crossovers. Thank you in advance.

That volume controller/pot looks brand new. i need one for 2220B, where did you get those?

How about 42 years without repairs? My Marantz has been just idling, diving a pair of very efficient speakers to concert levels (1 watt input=102 decibels @ 1 meter) Dust-off and de-oxide controls is all I've done and, oh yes, LED display lights to reduce internal heat and reduce power consumption. I'll keep you in mind, should I experience trouble. Knock on wood! Good video, though.

there should be AAAhM an algorithm AAHMMM to erase AAAHM many AAAHMM times the AAAHMM you AAAHMM AAAAHM say!

(2:45) You can also see one of the infamous DCM aluminum core inductor coils here. Seems that aluminum does indeed have some slight ferrous properties. Just enough that Steve E. and crew would use it when an air core wasn't enough, but an iron core would have been way too much.

Yeah, they sure went nuts with that adhesive! I'm currently rebuilding two Time Window 1A crossovers which I will be mounting in shadowboxes so you can admire the engineering. The thing is, I have to use the original inductor coils because I think they were hand wound. It would be impossible to find ones off the shelf that would match exactly. But, man, that glue! Fortunately, the 1A crossovers aren't as crowded as the TF-700s were. It pops right off with a knife. I guess they saved a lot of labor by gluing every damn thing together (which they couldn't really do with the backs of the 700s), but it sure makes DCM speakers a PAIN to work on. Again, thanks for uploading this! :)

(4:17) It depends on what kind of driver it's connected to. If they used a different one later on that is probably what warranted the value change. Steve Eberbach and company pretty much flew by the seats of their pants back then, so it would be interesting to see if they swapped out a driver for a different one. Time Windows come to mind, when Phillips stopped making speaker drivers and they switched to Vifa (now Peerless/Tymphany). However, it's likely you won't notice such a small difference without actually measuring the frequency response, so it's all good. :) I had these exact speakers in the late 80s and even had the backs off. Very cool to see the inside again. Thanks for posting! :)

Any change of providing an update to your project? I'd love to see the restoration.

Hi,nice job! have a problem with my amp...can you help? tanks kzfaq.info/get/bejne/nbWTZ5xev9bFdnU.html

It saves a lot of time and expense to consult the factory repair manual. Some of these circuits are Saul Marantz's patented designs and don't respond to DIY treatment. Good luck!

U have jvc spair parts avalible

Jvc home theater spair parts avalible

sweeeeeeeeet.......found a 2215b that needs exactly this same treatment...thanks for sharing!

wondering what to use for transistor replacements for both the drivers on the main baord and the transistors on the preamp and phono boards. I have 2220 and am doing the caps and transistors

What could be wrong with my marantz ? You can see on video how it's acting cutting off sound kzfaq.info/get/bejne/mtRonZOkrLS-lGQ.html

I have a jvc digital stereo receiver R-X220LR I am getting no sound at all now was getting sound from one side little from other side speaker though now none, I rebuilt the speakers so it is not speakers wonder if you know what it could be? I had opened it up & blew all the dust out of it that collected through the years bought this new back in 1983 I believe with matching dual deck cassett recorder I yet have the manuals to them though doesnt give me any trouble shooting tips what can be?

I have Marantz 2220 that I recently restored. Painful to work on amplifier.

Why do service guys on KZfaq always talk in slow motion like they're doing Mr. Rogers?

Oh yeah, 2SC458! Akai reel to reels are famous for those!

The part #r755 burn up in front of the temp sensor.do you know what cause it?

No more updates on the status of this project ?

Mine originally didn't have compound on the transistors, it had pads, do I remove the pads and apply thermal compound?

Where did you get the led's for the dial lamp replacement, my 2220B needs them. part # ? Thanks.

I love my TF600’s,they sound just flawlessly!

Wish you would of gone into more details.

A question, I just recapped the amp board on my 2220b. It powers up but if I turn up volume past 1/4 the protect relay trips out.i used the ELNA Silmic ll because I was assured they are low leakage? What did you use on your low leakage caps.

It belonged to your Dad? I wouldn’t sell it. But that’s just me....

what would cause all the lights to go out at once on a JVC rx-6020v receiver still plays just no lights

Where did you find new electrolytic cans? I have 2 JVC's that need 6800uf @56 volt.Thanks.

I have a 2230 that needs attention. Do you have a website and pricing?

Nice job !

Very good advise .............polarity of capacitors hahaha , yes i've seen these errors ! Do the same and work in steps and control after every work . These amps sound fine with a job well done ............i heard to often restored ( good old ) amplifiers sound bad after a recap with inadequate or huge oversized caps. The output capacitors if still good , i leave them to preserve the original sound . ( they are not under the same stress as the filter capacitors and often age well .) Thanks for sharing ....

Great Video. My JVC RX-707 has similar problems. Changed one of the channel's two transistors but can't find the manufacture and part number of that white "cased" resistor of 3 Watt 0.22 Ohm you show testing on your video and need your support. Thanks, Danish

We have a jvc rx -309tn with just 2 stock speakers on it at work in the shop. Well one day we came in and the tweeters work on both speakers but the woofers that are in the same boxes do not. So speakers have no bass just tremble. Have any clue what could be wrong?

Dear Sir. Please, do you have the front door hinges on the JVC RX-1050? Or do you know who you are? Thanks. Roberto from Brazil.

Hi, I was wondering if you used mica insulators on the MJ21193G/MJ21194G output transistors. Or did you use silicon insulators? Thanks

i wannna see this baby playing

Hello I have a jvc RX805 vtn similar to the one you are fixing. I have it since 1993 a long long time.. but recently stop working. I replaced the fuze 3 times but as soon as I power the fuze burns. I was told to change the capacitors, but I am not shure what capacitors the power suply capacitors or the capacitors for the audio section? I'd appreciate if you can give me a tip. Thanks

So did you replace the fiter capacitors?

Well at least you got a discount, I have argued with my local Goodwill to give me a discount on stuff that doesn't work. They just say oh well if something doesn't work bring it back and exchange it. I tried to explain I'd take it as is and try to repair it. At least the store makes a little money instead of it getting tossed into the recycle bin.