Re: Problems with Samsung 740N monitors

Hello, thanks all for your support.

I've installed third party inverter and the unit was able to lit, but it won't receive VGA signal CPU when attached to CPU.
Then I was able to get the exact same scalar board from a friend, turns out it was the MCU. I've swap the memory (A81SC) between two boards, and the old scalar board is still dead.
So, in conclusion, this particular unit got scalar board problem, and case closed, since it is difficult to find MCU replacement in my country, and changing new scalar board just...

Re: Problems with Samsung 740N monitors

Hi guys,

I'm new here, so nice to meet you all.
I'm facing problems for 740N as well:

1) Power Led is not on at all, even if I push the power button several times.
2) I changed all three 820uf bulged caps with 1000uf/25v, and changed the 3A pico fuse (broken) , but the power led still not on.
3) I already changed the TL431, power led still not on.
4) All rectifiers are ok.
5) 3.15 fuse is ok
6) I have checked all CCFL with CCFL testers, all lamps light normally.
...