Samsung Syncmaster T240 - dim screen

[atomc]

Hello,

Some time ago, my Samsung Syncmaster T240 suddenly lost the screen brightness. After opening it, I saw that the TM-09175 inverter transformer is damaged (melted on top).

Actually the monitor is working, but adjusting the brightness at 100%, the screen looks a bit dark and seems as if it was set at 40% brightness.

I ordered today the inverter transformer and I hope to receive it in three weeks. Meanwhile, I can do some testing if anyone believes that there may be some other broken component.

Thanks in advance.

[1supertech]

Re: Samsung Syncmaster T240 - dim screen

Test resistor R301 looks like it got a bit warm

[budm]

Re: Samsung Syncmaster T240 - dim screen

I would recap the board.
You can also have worn out lamp so it draws too much current as caused one of the two high Voltage windings to burn out.

[atomc]

Re: Samsung Syncmaster T240 - dim screen

Test resistor R301 looks like it got a bit warm

Unsoldered R301 = 390K
You can not distinguish the colors of the resistor, but I've seen pictures of the same power supply and seems the correct value.

I would recap the board.
You can also have worn out lamp so it draws too much current as caused one of the two high Voltage windings to burn out.

If I have a worn out lamp, can I do something?, worth it?