Question about Technics SA-EX500 Receiver
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Posted on Jan 02, 2017
You can CLEAN / LUBRICATEthe volume control know with a CONTACT/CONTROL cleaner, I use a product from Radio Shack, this works wonders on drum type electo mechanical devices which are basically volume control knobs, easy to do, just remove the round knob and spray into the openings with the small tube attached, and rotate in both directions, be sure to unplug the unit first, on a few occasions it is best to remove the front panel to acheive better coverage to the rheostat type volume body, anyway it always cures the crackling and distorting sound, I would give this a try before replacing the part.
Posted on Feb 15, 2009
SOURCE: Technics SA DA20
I have a Technics SA DA20 control receiver. I was given it by an electronics workshop and it has this same error of OVERLOAD coming into the display when switched on. I removed the plates from underneath and re-soldered as far as I could all the points along the stereo amplifier ICs and as far as access would allow. The unit then worked normally for several hours. I was very pleased, and went out shopping!. But on my return after it had been off for about an hour, the same problem has come back. But my boss at the electornics workshop thinks it it just a dry joint, or series of dry joints. The unit is complex to dismantle, so patience and care is required in taking it apart and making a note or diagram of how it comes to pieces and how to re-assemble it after the board has been re-soldered. It does not appear to be a component problem or fault with the SVI power amplifier ICs.
Posted on Jul 13, 2009
TV is not customarily a sound source. It is a video destination. Get your TV-related audio to the receiver from the same places the TV gets it - each source device's audio outputs.
Posted on Feb 06, 2010
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