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Samsung PS-50Q96HD with BN44-00189A Keeps Turning OFF Please HELP!
Jabboy:
Hi All,
Could someone please help with our faulty TV?
I am new to this forum and wanting to repair my Samsung BN44-00189A so please excuse my noobness.
Our TV works perfect however after it has been on for a few mins it switches itself OFF and makes some clicking sounds then switches back on. It will continue doing this for not sure how long.
I have opened the back of the TV and see no bad Capacitors etc.
I have learned good soldering skills and basic Multimemter usage.
I really hope someone with the knowhow can guide me?
Any help would be much appreciated.
Regards
t1412:
hi mate, i had a fault like this before it turned out to be a dry joint on one of the transistors, qx801, wot power supply is yours. the one i repaired was bn44-00189. hope it helps
regards
shaun
Jabboy:
Hi Shaun,
Thak you for replying..... my PSU is quoted in the subject and it is: BN44-00189A or PSPH531801A.
I have taken the old Soldering off the QX801/2 and chaged almost all Caps except the few Larger ones.
With that said the issue still remains.
I am not sure what else it can be as there are no visible Burns, Bad joints or broken bridges etc :S.
Can anyone Please Help???
t1412:
sorry m8 got to get my eyes checked, have you tested the larger transistors on the same heatsink as qx801, wots the va/vs voltages, i think there is a repair kit for this board, ohms supplies stock them!!
shaun
Jabboy:
Its Great my bad I didnt put PSU in subject but just the name.
I am not sure what you mean by va/vs voltages???
How do i test these and what do i look for? I have a basic Digital meter.
On the green side, I checked the QX801/1 QS801 etc and the QX801 shows 12 and 12 while the QS's are around 54? if thats any good?
as for the Large Transistor, I have not paid any attention to it, what do i look for? there are no burns etc
Thanks
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