Question about Sony STR-DE310
The receiver started tripping while on but would turn back on and be fine, even at low volume. Which leads me to a power issue, now the receiver won't turn on at all even on a different curcuit. I checked all speaker cables and they seem ok.
Disconnect all the speaker wires, then turn the unit on. If it does not power on and the standby light is "out" pop the top and check the internal fuse by the power cord. Beyond that, without the proper testing equipment, it's all a guess. If the unit turns back on with all the wires disconnected, then reconnect your speaker wires one by one and test each time. If it does not cut out, you found the problem. Wire touching. If it cuts out, disconnect wire at the speaker and re test, if it still cuts out, replace the wire and try again. Then re connect the same speaker to the new wire and test. If your lucky, all will be well. If not, it will need to be serviced or replaced, based on cost. Hope this helps
Posted on Jul 01, 2009
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Posted on Jan 02, 2017
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Aug 07, 2012 | 1990 Volkswagen Jetta
Generally speaking, an amp protects itself from heat, shorts and overloads by refusing to turn on or stay on.
Overloads can be from excessive periods of high output 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 'naked'. 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 hands-on tech.
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