Hi,
My Samsung 32" UA32H4000AW LED TV - backlight is very very dim, can still see moving images on the TV but barely.
I couldn't find a schematic online, the board number is L32S0_EHS - BN44-00696B
What I've tried:
EDIT: I think I messed up my testing points. Retested with 3+ to 3- etc.
Measured the power to LED strips (top right connector on power supply board), labelled CNL802. The output rating listed is 76V @ 450mA
With TV switched on, and LED strips plugged in:
3+ -> 17.45 V
2+ -> 14.8 V
1+ -> 61.5 V
With TV switched on, and LED strips unplugged:
3+ -> 0 V (in the mVs)
2+ -> 0 V (in the mVs)
1+ -> 0 V (in the mVs)
All measurements taken with the negative probe connected to the corresponding "-" point e.g. 3+ to 3-. 2+ to 2-
And TV switched on, LED strips unplugged, this time measuring 3+,2+,1+ to chassis
3+ -> 130 V
2+ -> 0 V
1+ -> 0 V
So I think it's a power supply board issue.
Any ideas? Thanks
High res photos:
Back of TV:
https://postimg.org/image/eq68hb75r/Front of power board:
https://postimg.org/image/b4m3q2tt5/Back of power board:
https://postimg.org/image/kemcz2ly1/