Question about Sony STR-DE935

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My mid 1980's Sony fm stereo fm-am receiver model str-av900 has stalled on me. I us it with a Sony 5 disc compact disc player cdp-ce125. I know they are old, but have been preforming excellently. The disc changer is hooked up to the receiver and when the receiver is powered on then I just add cds and hit play and cd starts playing. However lately the receiver shows in the graphic equalizer that the cd is playing and the disc changer shows that the cd is playing -- but no sound. It once only took about a minute for the sound to be heard, no it takes longer and longer like after 15 minutes I gave up. Would this be expensive for repair are should I just give it up and buy a new receiver? and which new receiver, when I shopped they are all for hookup with Home theaters. Help me.

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Since the receiver eventually works, the delay circuit is failing. This is a circuit that allows the power supply to settle down before kicking in the output relay. This prevents the "pop" that was sometimes heard on older units. This should be a simple and inexpensive repair probably requiring the replacement of a couple of small capacitors in that delay/protection circuit.

Dan

Posted on Mar 09, 2009

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I presume you realize none of these things produces speaker amplification. A receiver would do that and facilitate graceful and simultaneous interconnections. But it's not a necessity for selective interconnective between them, just not all at the same time.

I can't find any details on anything you named except the Tuner.

Typically, the tuner would use an RCA pair to go to a receiver AUX, TUNER or other Line Level input for source selection and amplification. Lacking a receiver, run it to the Tape Deck inputs for recording.

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This can be shorted output transistors (common) or a defective voltage amplifier IC. WIthout taking measurements inside, there is no way for me to make that determination. In any case, this should be a relatively simple repair for a shop that repairs audio gear. Expect a parts cost in the $25-$40 range.

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If your going to buy an antenna you could do some research at cccrane.com. They might be able to help you with the other problem too.

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