Question about Audio Players & Recorders
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Posted on Jan 02, 2017
SOURCE: SX-950 Stereo Pioneer Receiver
The relay is a protection device for the speakers. It will shut off the speakers when problems are detected internally. I would suspect that some of the capacitors in the front end are in need of replacing. This is a common item for units this old. I have restored a number of these for customers over the years with much success. Figure about $15-$20 in parts for this repair plus the local labor rate. This unit is definately worth a refurb. What happens is that there is dsome DC voltage being leaked into the final amplification stage. This triggers the protection circuit to shut off the speakers. DC voltage on a speaker will heat up the coil and eventually destroy the speaker.
Posted on Apr 02, 2008
Check the speaker wire. Sometimes it can just be loose in the terminals and cause distortion. I have had the problem before.
Posted on Jan 12, 2009
It sounds like your volume control pot has dust in it.You need to remove your cover from the receiver,spray pure denatured alcohol in the small openings in the back of you volume control dial and turn the knob all the way up and down several times and then blow low compressed air threw the same small openings while rotating your dial.That should fix your problem.Be sure you unplug your receiver before performing this procedure.
Posted on Feb 20, 2009
SOURCE: Pioneer SX-450 Power Flickering
This is a common problem. The power switch is sparking internally. The contacts need to be burnished. This will extend the life of the switch. The switch itself is no longer available. If you are not comfortable repairing this, check with a shop that deals with vintage audio.
Posted on Mar 17, 2009
DVD audio straight in from its highest quality audio output. Use the stereo audio output to run straight to the TV for casual watching through TV speakers without the Pioneer involved.
A TV is just a glorified night-light, not a sound source - get its related audio from the Cable Box, ditto the highest quality
Posted on Mar 04, 2010
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