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This is what the manual says:
PROTECT"and "PUSH POWER" appear
alternately.
•A strong signal was input.
Press ?/1 to
turn off the power, leave the system
turned off for a while, then press ?/1
again to turn on the power.
•Check the speaker cables in case
"PROTECT" and "PUSH POWER"
appear alternately again after you turn
the system on.
The "PROTECT" and "PUSH POWER" messages will flash alternately when the protective device of the amplifier has been activated because a strong signal was input, or if there is a short-circuit detected. Press the POWER button on the unit to turn off the system, and check the following items after "STANDBY" disappears.
1) Are the + and - speaker cords short-circuited?
2) Are you using only the specified speakers?.
3) Is anything blocking the ventilation holes of the system?
The "PROTECT" and "PUSH POWER" messages will flash alternately when the protective device of the amplifier has been activated because a strong signal was input, or if there is a short-circuit detected. Press the POWER button on the unit to turn off the system, and check the following items after "STANDBY" disappears.
1) Are the + and - speaker cords short-circuited?
2) Are you using only the specified speakers?.
3) Is anything blocking the ventilation holes of the system?
You may also refer to the following link for additional troubleshooting steps.
push power protect is error signal shows problem in power amplifier board, mostly power amp out
IC STK402-100S found deceptive.
contact nearest Sony service center for proper repair.
hi, everytime i switch on my sony hi fi it the display screen says protect push power. It won't let me do anything not even put cd's in. If you could help that would be very much appreciated.
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