Please share your solution for the problem on protect and push power that appear alternately even after the system was turned on and off and also completely checking the speaker cords.
That is the common symptom of the defected STK-IC in power amp.section that busted already or just a loose connection.First try to resolder the pins of STK-IC if its works! if not that is the time you replace it, so it works normal again.
Hope it may helps you...
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