One has to open her up and check for aged or swollen caps on the
power supply.
SOURCE: Kenwood Receiver KR-a5020 receiver won't come out of standby
The unit is in what is commonly known as "protect" mode. This means that a problem has been detected in the final output stage of the amp and the outputs are shutdown to prevent further damage to either the receiver or speakers. This should not be a difficult repair for a service shop. Expect a parts cost in the $25-$40 range. Add in the local labor rate for the total repair cost.
Dan
SOURCE: Reciever wont stay powered on
I fear that there's no easy fix. Sounds like the power supply or the board which controls it is bad. If you're not an electronics repair person, it'll need to go to a repair shop.
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Is there a fuse or reset button that can be changed or pushed
it would be either capacitors have swollen or dried up on the power supply or simply a power supply failure , one has to open her up to find the cause,
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