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Onkyo TX-SV535 Receiver Questions & Answers
My Onkyo TX SV 535 Surround Sound wont work
Speaker relays have oxide on the contact points. Open up all the speaker, spk, relays and remove the oxide layer formed on the 12 contact points. Those 3 relays are on the spk terminal board. You can located it easily. It just mounted next to spk output, a horizontal board.
Onkyo tx-sv535
when the apm in protect mode means it is problem in inside.don't trow it please repair it n use
Protect mode help
Generally speaking, an amp attempts to protect itself from heat, shorts, overloads and operator exuberance by refusing to turn on or stay on; or it may turn on but produce no audio to the speakers.
Overloads can be from excessive periods of high output or marginally low impedance loading by the speakers; and shorts would be wiring issues or a speaker blowing up.
You should be able to feel if it's hot. WHY is it overheating? Make sure it has sufficient ventilation on all sides and that vent holes are not blocked by dust balls. Ensure the fan (if equipped) is running as designed (some only operate on demand). Clean dust and debris from it.
If the amp comes back on after cooling, you're lucky. They only have so many self-protection cycles in their lives so continuously resetting or cycling their power without addressing the cause can do more harm than good.
If it protects immediately on a cool power up you should disconnect the speaker connections and try it 'nekkid'. If it comes up then diagnose which lead(s) are shorted. If it does not come up the problem is internal and should be left to an experienced and competent hands-on tech.
Check for loose speaker connections at the speaker as another possible root cause for intermittent shutdown.
I have a problem with
If you are getting standard stereo sound but not when engaging any surround option, then the problem is centered around the digital processing section. In standard stereo mode, the processing is bypassed. On some units this too would yield no sound, but with your model, the bypass is external to the processing section. This problem can be as simple as a bad voltage regulator on the processing board to a more elaborate problem within the processing circuitry itself. Without actuall seeing the unit and testing internally, I can not state for sure. This is a decent receiver and is worth the cost of a detailed repair estimate. Get one and report the results here. We should be able to guide you through the actual repair.
Dan
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