hi to all
I have a Hisense 65K560DW TV with problems on the Power Supply Board
part number: RSAG7.820.4877
My issue was the standby 12V not stable and changing between 11.2 to 12 v. This was causing the power supply to go into a protection mode . Only symptoms externally was blinking dim standby led.
Measured across VZ901 but the voltage was also fluctuating there. I discovered the rectified DC output from VD901 and VD902 was not stable with approximately a 40V ripple.
please advise me
tnx
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I have a Hisense 65K560DW TV with problems on the Power Supply Board
part number: RSAG7.820.4877
My issue was the standby 12V not stable and changing between 11.2 to 12 v. This was causing the power supply to go into a protection mode . Only symptoms externally was blinking dim standby led.
Measured across VZ901 but the voltage was also fluctuating there. I discovered the rectified DC output from VD901 and VD902 was not stable with approximately a 40V ripple.
please advise me
tnx

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