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RE: Pioneer SX-727 is driving me nuts!

Posted by JP van Son (A) on July 14, 2007 at 18:54:46

In Reply to: Pioneer SX-727 is driving me nuts! posted by Audio_Orphanage on July 14, 2007 at 17:31:20:

A common problem I've encountered with every Pioneer of this vintage that has passed through my hands, including two SX-727s, is that the contacts on the protection relay corrode and the signal is lost in at least one channel or at least crackles horribly. I can't explain why, but it's always been the left channel.

With the unit unplugged, pull off the top cover and the perforated metal cage around the finals. The relay will be just about in the center of the chassis. Carefully pull the cover off, watching for the two tabs on each of the long slides. Take a small strip of crocus cloth (abrasive fabric like a high hundreds sand paper), slide it between the contacts and go back and forth until they look shiny again. Try the receiver out to see if that fixed the problem.

Now, lots of other things could be wrong including blown components, broken switches and such, but this is the most common problem I've found after dirty switches.

Good luck,
- JP

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