Question about Yamaha DSP-A1 Receiver
Can anybody tell me how to activate the internal self diagnostic program
What will this do when in the diagnostic mode... My display is going in and out of service
Posted on Jul 09, 2008
To get to the diagnostic menu on the machine press power button set menu + button and next key all at the same time which will take you to the diagnostic menu
Posted on Mar 12, 2008
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Jun 14, 2012 | Yamaha DSP-A1 Receiver
Generally speaking, an amp protects itself from heat, shorts, overloads and operator exuberance by refusing to turn on or stay on.
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 '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 and competent hands-on tech.
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