Yamaha YSP-4000 turns off periodically

MakW

Novice Member
Hi, I need some advice. I have a Yamaha ysp-4000, bought used in mint condition, after 2 days i am tried to turn it on but YSP turns off after 2 seconds, if try to turn it on 2-3 times YSP start working without problems until I turn it off. In a self diagnostic menu i catch error D-I_PROTECT G, I found Service manual where information about this error:



Cause: Amplifier IC is abnormal.
Turning on the power without correcting the cause will
trigger the protection function to work 2 seconds later to
shut off the power supply.


Any advice how to fix it byself, what IC should i check? Thanks in advance.
 

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