Sanyo System 566 NEED HELP

[PartyAtTheDukes]

Hello all

Im new here so wazzzzup

Anyways I've recently become obsessed with the whole amp/stereo/speakers/turntables/stereo systems/vinyl and Im loving it.

I recently picked up a Sanyo System 566 that is 4 parts: A turntable, tape player, AM FM Tuner, and a receiver/amplifier.

Everything works great except the right channel plays no sound. I have tried troubleshooting all three sources and all three dont play audio through the right channel- at all it's completely silent. I tried plugging headphones in and again no sound through the right earbud. I tried switching the speakers and the speaker wire - still no sound. I plugged the turntable in on a different amp just to be sure and it plays through both speakers with a little finaggling of the stereo plugs. So needless to say I know it is the amp that is the problem but I have no idea how I would go about fixing it or how much of a hassle it would be or how much it would cost to pay someone to fix it.

Right now i have two speakers hooked up to it in series through the left channel and my lion king soundtrack tape seemed to play fine but when i put the stones vinyl on the lack of stereo was very noticeable.

I would be willing to settle for some kind of mono adapter that will change the stereo on the turntable to mono if it's not too pricey or if that exists. But I would rather have it work properly if I can.

Any help would be greatly appreciated!!!! (I have pictures if anyone needs to see them)

TheDuke

 

[markw]

Offhand, I'd say that tuner/amp is fried. Technicians charge by the hour and have to make a living. Repairing it will be more than it would cost to replace it if those four units are separate. Of course, if all pieces are in the same unit, you might be screwed.

Unless you have experience repairing this stuff and the required equipment, don't waste your time. Of course, maybe your post at DIYaudio might produce a miracle, but don't count on it.

 

[PartyAtTheDukes]

do you know if a mono adapter exists to convert stereo plugs (L & R) to mono?

 

[markw]

what kind of plugs? You might look for a two female to one male RCA splitter but not knowing what you're playing with, that's just a wild guess.

 

[PartyAtTheDukes]

they are just your average red and white rca cables

 

[markw]

Then I answered your question in my last post. Good luck. I'm outta here.

 

[TLS Guy]

The problem is that you have bought eighties junk.

If you want a good retro system you need to go back to the seventies.

Don't waste your time using one channel.

Here is a first class older receiver at a really good price.

The Internet is your friend, and you can put together a really nice retro system if you are patient.

Do your home work. Junk has escalated since about 1970, and exploded in the eighties. Things are still bad on the whole.

 

[PartyAtTheDukes]

I already have a pretty good seventies turntable/amp setup. This is more a backup/secondary setup for vinyls, cassette tapes, and the radio.

I will probably just end up buying a mono adapter, but I was/am just curious how hard it is to fix a broken channel on an amp, and how to determine the severity of the damage, or how much a repair would cost, I would be willing to invest a decent amount since I paid next to nothing for the whole setup anyways.

If anyone has any experience with broken channels, broken channel repair, or any experience along these lines I'm all ears!!!!

 

[TLS Guy]

I already have a pretty good seventies turntable/amp setup. This is more a backup/secondary setup for vinyls, cassette tapes, and the radio.

I will probably just end up buying a mono adapter, but I was/am just curious how hard it is to fix a broken channel on an amp, and how to determine the severity of the damage, or how much a repair would cost, I would be willing to invest a decent amount since I paid next to nothing for the whole setup anyways.

If anyone has any experience with broken channels, broken channel repair, or any experience along these lines I'm all ears!!!!

The problem is you need a test bay, like I have, and have to know circuits and have a circuit for the unit you want to repair.

Since the headphone does not work the problem is in the preamp section. From the date of your unit, the problem is most likely a failed op/amp chip. These chips started to appear mid to late seventies and were widespread by the eighties. These early chips I can tell you are very prone to age related failure. These older chips are very seldom obtainable.

Earlier units like the Yamaha I found for you, use discrete transistors and are almost always can be repaired, but units like yours seldom are.

 

[PartyAtTheDukes]

Do you know about how much one would cost offhand? you seem pretty knowledgeable.


BTW your setup.....insane, how many years did it take

 

[TLS Guy]

Do you know about how much one would cost offhand? you seem pretty knowledgeable.


BTW your setup.....insane, how many years did it take

There is no point in talking cost until the fault is found. That is where the cost comes.

If you want on older set up, snap up that Yamaha. That Sanyo is junk and not worth the time of day. Don't get married to it, junk it!