Question about Marantz SR-5600 Receiver
I've had 5 great years from this receiver. Without any changes in wiring/position etc it suddenly cuts out after 15 mins of a movie. I can turn it back on, but it cuts out again a few minutes later. I have tried unplugging it for several minutes to remove any electrostatic charge (the only tip in the manual), but so far no luck.
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Jan 22, 2015 | Audio & Video Receivers
Jul 24, 2011 | Sony Audio & Video Receivers
Generally speaking, an amp protects itself from heat, shorts and overloads.
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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