Cheap stereo electronics, What do you think failed on these models?

Why are you asking the same question when your original post has already been answered? In-depth, I would add.

Unless you've already got a lab's worth of test gear, desolder/solder equipment, and the experience to use it all, my advice would be to simply save your pennies and go get a decent new receiver.

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Becaus the original post asks

There are several of these models on Ebay. What do you think the chances are that the power supply failed or the audio power amp shorted? What would be the chances of finding the power out amp chip? These can be bought anywhere between US. $15,00 to $25.00 shipped.

This question does not gets transfered with the RE post. I would not call this an in-depth answere! Why do people do cross word puzzles? When the answeres are on the next page. If I can get a $200.00 stereo and have only $20.00 in it, that leaves $180.00 for other toys. My last project was a 60" bigscreen with $65.00 in it. It's all in the math! I have more time than money.

Are you a Doctor of electronics?

Hi!

As others have mentioned, it is hard to say. You could buy them and you might just get lucky...

However, it's a big chance to take. Even if you can fix what is wrong, the parts may cost as much as you've got invested in the receiver.

You might also find working gear for less...I bought a Pioneer stereo receiver (digitally tuned, four speaker plugs, lots of inputs) for about 50 cents. It had no cover and the old man selling it insisted that it didn't work. At the time I thought the alphanumeric display might be interesting.

I've been using it for three years since then. It works well and plays nicely. I've even found a remote control for it. Someday I might build a wooden cover to replace the missing metal one (unless someone here might have one...ST-277R is the model # IIRC). For now I am not too worried. The unit is safely out of reach of anyone who might get inside it.

If you really insist on buying one or more of these broken units, I'd go for the KLH. Insignia is a brand sold by Best Buy stores (in the US) and as such is probably A) bargain basement cheap and B) impossible to find service information for.

William

I know what you mean. I buy broken electronics at garage sales, for next too nothing and some free. It's great experience and finding useable parts. I would rather repair a ten year old VCR, that would last longer than todays brand new. I don't have much experience with todays new electronics, but I am sure they are pushed to the limits on tolerence. I know these stereo's have protection circuits, if the circuit detects a short, the power supply shuts down. which makes me think the main power amp is shot. But also could be a shorted diode in the power supply. As many of these models that are on Ebay with power supply problems, I thought somebody might of work on them. If anyone says it's the main out amp, I will blow them off. I have a Fisher stereo that I replaced the dual channel out amp in

1990. It has blown one channel again. The price in 90 was $11.00, now they are $40.00 plus. I am looking for something cheap for the garage.