Re: samsung y-sus repair assistance please!
The story so far.
All components mounted on the three heatsinks have been removed and tested. Still only the previous three fets show as duff. The exception test wise are the two stth20p03s rectifiers (?). I am unsure how to test those.
I have removed and tested the electrolytic capacitors to infinty and all test good as far as that particular test is concerned alhough i do not have the equipment to properly test them. Any advice as to further tests i can perform please.
many thanks Dave..
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Re: samsung y-sus repair assistance please!
Yes i agree in principal but should i be getting those voltages between earth and
the metal capacitor tops? I have new mosfets ready to install but in my mind i still have a problem to resolve or they will go the way of the originals.
For information the tv and board numbers follow.Your input is very much appreciated.
PS50C96HDX
850HW-YB02
LJ41-05120A
REV 1.3
Thanks Again Dave.
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Re: New Members - please post your introductions here
Hi All, i`ve been building and repairing pc`s for family and friends for some years now. It is infact my dead plasma tv that brought me here and i`m very glad, as this site has a great deal to offer.
Cheers for now Dave..(in sunny Cornwall)
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samsung y-sus repair assistance please!
hi, on my y-sus board 3 of the 4 mosfets (748228) have blown. I have removed all 4 and am now looking for other defective parts on the board. Strangely the area surrounding the mosfets when the board is powered up shows predominantly a - (negative) 192v and in a few places -(negative) 67v. This includes the tops of the capacitors around that area of the board. Has anybody any idea which other components to look at to find the faults now please. many thanks for looking Dave.
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