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?
Thank you to the guys at HEGE supporting Badcaps [ HEGE ] [ HEGE DEX Chart ]
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Re: Samsung 2253bw black screen
TM-21240. I made a few pictures with old caps...
EDIT: Deleted Dropbox link and photos uploaded as attachment....Last edited by domy_os; 01-27-2015, 03:10 PM.
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Re: Samsung 2253bw black screen
Sorry, I can't edit above post.
Resistance on first trafo: 1060 Ohm
Resistance on second trafo: 1111 Ohm...
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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?
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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:...
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