• Hisense 65K560DW Power Supply problem

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Hisense 65K560DW Power Supply problem

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  1. Topic title should contain: the device's manufacturer, full model and the brief description of problem.
  2. Topic message should contain: the PCB marking code (required in case of hardware repairs), an extended description of problem, things you have checked/replaced/measured, your conclusions and the question. If you are not able to find the PCB marking code, please read THIS TOPIC. If you still cannot locate the PCB markings, please upload a clean, both-side photos of the mainboard - it is required to remove any films, modules or brackets possibly covering these markings.
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#1 Hisense 65K560DW Power Supply problem

by Amir • 17 November 2021, 14:42
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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Re: Hisense 65K560DW Power Supply problem

by Google Adsense [BOT] • 17 November 2021, 14:42
 This topic is marked as ARCHIVAL. Please only reply if your message contains the solution (Terms and Conditions p. 12.1).
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