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Samsung 940BX LCD monitor 9 mos. old, Problem with monitor not staying on. You turn it on, it will come on for about 3 secs w/picture then goes off, but blue light stays on, black screen. Press power button again to turn on, it will come up for about 3 secs w/pic, but then shuts off again w/blue light staying on. How do I fix this?

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  • ws-zissou Jan 20, 2009

    I have the exact same problem, but cant find anything in the ways of fixing it. Did you solve the problem without taking your PC in?

  • mmccarthy Jan 22, 2009

    We bought 6 of that model and within 1 year 2 of them have developed that problem.

  • Anonymous Apr 15, 2009

    I even tried using the DVI cable and the analog. Screen just goes dark after a few seconds after turning it off and on.

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The IPboard part no. BN44-0012A is bad. We had to replace 5 monitors with the same problem. If under warranty call 1-800-Samsung for repair or exchange.

Korhan Balimtas

Posted on Apr 23, 2009

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If you're out of warranty, you might be able to fix this by replacing a couple of capacitors on the power supply board. I have been doing this the past couple of days to several "dead" monitors with success. I have replaced 820uF 25V caps with 1000uF 35V ones you can get at Radio Shack for $1.69. And 1000UF 10V caps with 1000uF 16V caps. A great indicator of heat problems is looking at the protective plastic shield(s) and looking for melting & black circles. These caps usually have a flat silver top. If they are bad, they either have not top, or the top is popped up. I hope this helps!

Posted on Oct 14, 2009

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