Steg 75.4 not working

[Krapulax6]

Hello my Friends,i'm Peter from Hungary..
I have this amp.No power on,no protect.The fuse are okay.All fets is good condition.HEF4093 have no power on the 7-14 pin,and the SG3525 same.
When i connect 12V to sg3525 13-15 pins,the green light is on and the four buffer capacitor have DC 30V .Then i think power supply and the power amp is all right.
Then the current is 700mA.
Can anybody help me?

 

[UserAbuser]

Can anybody help me?

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