Question about Technics SA-DX950 Receiver

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Technics SA-DX950 surround sound problems

The surround sound on my receiver does not work properly when it is first turned on. To begin with I only get sound from 2 or 3 speaks mainly the center and the rights (front and back). However if I turn the volume above 37 they all start working and continue to work even when I lower the volume. Although I can continue to use the receiver like this it is rather annoying and I would really appreciate some help in eradicating the problem.

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  • adamsjs Nov 12, 2008

    Many thanks Dan. I have been reading other postings and was starting to think that may be the case. I think I will take to it someone to get the relay replaced and I expect having the numbers will help. Thanks again for a prompt and helpful response

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The most likely culprit here is the output protection relay. The contacts are a little corroded and the higher volume "jumps the gap" temporarily "cleaning" the contacts. The relay should be changed. I don't have the manual with me, but the following relays are in the unit. One of them is the speaker relay:

Part # Cost
RSY0054-C $12.63
RSY0040M-0 $ 5.89
K6B2AHA00014 $ 8.14


Dan

Posted on Nov 12, 2008

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This is a shorthand version of protect. See the link below. If you have more questions, please post them here and I'll respond.

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