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.
If you have your speaker wires plugged in when you turn it on try unplugging them and turning it on to see if it turns off again. if it stays on after the speakers are connected you have a speaker wire shorting somewhere or a blown speaker and the amp is turning off into protection mode. if thats not the case check the fuses inside of the amp and make sure they are ok. and while its apart use a can of air to clean off the circuit board to make sure there isnt ne dust causing a short on there also.
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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.
If you have your speaker wires plugged in when you turn it on try unplugging them and turning it on to see if it turns off again. if it stays on after the speakers are connected you have a speaker wire shorting somewhere or a blown speaker and the amp is turning off into protection mode. if thats not the case check the fuses inside of the amp and make sure they are ok. and while its apart use a can of air to clean off the circuit board to make sure there isnt ne dust causing a short on there also.