Re: Samsung 2253bw black screen

So, I have to replace inverter trafos? I found one on eBay but it's too expensive. The new PSU board costs less then one pair of trafos. Is there any alternative part number?

Re: Samsung 2253bw black screen

TM-21240. I made a few pictures with old caps...

EDIT: Deleted Dropbox link and photos uploaded as attachment....

Re: Samsung 2253bw black screen

Sorry, I can't edit above post.



Resistance on first trafo: 1060 Ohm
Resistance on second trafo: 1111 Ohm...

Re: Samsung 2253bw black screen

I use LED and tungsten bulbs in my apartment so I don't have such lamps but will try to find it somewhere.

What can I do next until I get some CFL lamp?

Re: New Members - please post your introductions here

Hello! Greeting from Croatia. I found this forum on Google searching for solution to a problem with my monitor. I have only basic experience with electronics but I hope someone will help me.

Re: Samsung 2253bw black screen

Hi,

I have faulty 2233BW monitor and would like to repair the PSU board rather then buy the new one. Capacitors looks good but I changed them with low ESR models and problem is still here. After switching monitor on, CCFL works for about few seconds, then turns off. I can see the picture with flashlight and I hear some squeaking from board. I did some readings while monitor was turned on:

Resistance on inverter secondary trafo: around 1100 Ohm
Voltage on inverter primary trafo: 0 V
Resistance between MOSFET pins:...