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Old 09-07-2020, 01:25 PM   #21
neilc6
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Default Re: Samsung UN58J5190AFXZA pwr supply troubleshooting help

This model looks very similar to UN58H5202Af (1 year older) where bad backlights take out a FET.

https://www.badcaps.net/forum/showth...ht=un58h5202AF

Check Q9101? (similar location) for shorts.
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Old 09-11-2020, 04:32 PM   #22
momo2000
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Default Re: Samsung UN58J5190AFXZA pwr supply troubleshooting help

Any other suggestions on what to test to track down the failed component(s) in this power supply? Would love the satisfaction of fixing it "myself" but I guess will have to go buy a new TV if I don't have this solved in the next few weeks. Suggestions appreciated.
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Old 04-03-2021, 10:52 AM   #23
bstewara
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Default Re: Samsung UN58J5190AFXZA pwr supply troubleshooting help

Hi,

We’re you able to determine the part number for QM801 and 802CS MOSFETS?
I have a set that these MOSFETS failed and burnt so I can’t see the part numbers.

Thanks in advance
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