Question about Denon DRA-775RD 2 Channels Receiver
Small amount of liquid entered though top vents- still operates CD motor-functions but no sound reads out PROTECTION ? can it be saved? old receiver but excellent
IF it was soda you can save it. Just put in distiled watter and let it dry out for 4-5 days. If you do not have the time to dry take a hair dryer to it not on high though. It need to be compleatly dry befor you plug back in though.
Posted on Jan 20, 2009
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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 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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