Question about Samsung 932BW Monitor

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I have a samsung Syncmaster 932bw and turned it on and noticed a real bad flicker ran all the tests i could find other then your flashlight test cause i dont think it pertains to my certain problem. after messing with it for about an hour i was turning it different directions while still on its stand and noticed when i leaned it one direction the flickering started to slow and eventually stopped, any suggestion before i tear into this monitor on what could be the culprit?

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Hello,

The flickering picture usually indicates that the power supply is failing. The most likely cause of the power supply failure like this is capacitors either drying out or bulging from over heating. We have a page on our web site at: http://www.ccl-la.com/blog/index.php/capacitors/ This article wexplains what capacitors are, what you will need to look for to identify the failures and which brand and series to get tof rht replacements. In most cases you can open the monitor and look over the power supply and see obvious bulging on the capacitors that are failing. If you replace them you should be back in business. If you have additional questions just let us know.

I hope this helps, if so please rate our solution.

CCL_Tech
Corporate Computer
www.ccl-la.com

Posted on May 01, 2010

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Greetings, I have the same problems as lots of people with my Samsung Syncmaster 740N flickering, and suddenly went off. The display can be turned off and on again and it will display shortly and then went...


Use good caps with LOW ESR, you can also have bad lamps which will also cause the inverter circuits to go into shutdown to protect itself. You need test lamps to test that. You may have to check the power supply DC outputs, Inverter circuits for bad transistors, transformers, etc.
Service manuals:
http://elektrotanya.com/?q=showresult&megnev=samsung&megnev2=740&kategoria=monitor&kat2=schematics

Basic LCD monitor and TV troubleshooting guide:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors: http://s807.photobucket.com/albums/yy352/budm
Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague
Parts: www.shopjimmy.com
Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps.
Or www.digikey.com, just make sure to use caps with low ESR, 105c, high ripple current and long life rating such as PANASONIC FM or FC series.
Please post back what you find.
Please leave rating if it helps.

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Samsung syncmaster 204b not turning on- My monitor's problem was when it switched off, the only way to make it work was switching off main power, and turning on again, then it would come back on flickering...


With certain Samsung models, not only do the capacitors go, but the MOSFETS will go as well, possibly a fuse. The MOSFETs are the big bulky black things with a silver tab and three legs. Should be between the capacitors and the transformers. Just pull those both out and test them (Google "test MOSFETS") One is probably bad but they must be replaced in pairs.

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