Question about Samsung SyncMaster 931B 19" LCD Monitor

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How do I replace the backlight in a flickering LCD montior?

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It may be back light but unstable power supply due to bad DC filter caps, that will be the first palce to check, repalcing lamps is not a simple job. See my failed SAMSUNG monitors due to bad caps pictures albums.
Lamps: www.lcdparts.net
If you are going to DIY and have proper tools and know safety precaution then please read on:
Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply (they should be replaced in a set), blown fuses; poor solder joints, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed monitors to get some ideas what to look for: http://s807.photobucket.com/home/budm/allalbums
Post back what you see inside so we can guide you further and it will help out other people in the future also.

Basic LCD monitor troubleshooting guide:
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting

http://en.wikipedia.org/wiki/Capacitor_plague
Learn about bad caps: Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you

Posted on Nov 07, 2010

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Posted on Jan 02, 2017

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