Question about Samsung SyncMaster 2233SW Monitor

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Picture goes off after 1 second on power - diagnosed as an inverter fault.Please advise where we can purchase.Thank you.

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Service341, Open unit first!! Look for typical bad capacitors on SMPS power supply board!!! Document unit "tear-down" using video camera or digital still pic's so you can perform "reassembly" of unit after repair is successful. Have you been to YOUTUBE so you will know what to do BEFORE you do the repair? Watch some videos first. Have you heard the old saying, "a picture (or in your case) a video clip is worth a thousand words!!! You can do additional comment here after you do your research at YOUTUBE as to the worth of this response. Possible you only need $5 in new capacitors and not a $45 SMPS/inverter board. Get back to us and report on the brand name of the filter capacitors you find populating the SMPS printed circuit board. I hope you don't find any "CapXon" brand filter caps on your board!!! 12fixlouie

Posted on Sep 10, 2010

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Hi art_davis,
Power on the unit in the dark room then shine with the flashlight directly in the screen, you will barely see the images. This is because your backlight is not functioning. The following reason was the caused.
1. Power supply - missing B+(supply voltage) coming from this board feeding the inverter board. This is caused by faulty transistor, dried/leaky electrolytic capacitor, open fusible resistor.
2. Inverter board - even the B+ is good from the power supply, if the fuse, driver transistor, driver transformer is faulty no output to the backlight resulting to black picture.
3. Busted backlight - even inverter board is good but if this is busted resulting to black picture also.

Check the parts here.
Diagnosing the fault is technical and if you don't have necessary tools and test instrument and can't fix it yourself, I would advice you to look for an experienced technician to isolate the problem.
Hope I helped you.
Have a nice day!
Thanks for using Fixya.

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Hi rallyred71,
Power on the unit in the dark room then shine with the flashlight directly in the screen, you will barely see the images. This is because your backlight is not functioning. The following reason is the caused.
1. Power supply - missing B+(supply voltage) coming from this board feeding the inverter board. This is caused by faulty transistor, dried/leaky electrolytic capacitor, open fusible resistor.
2. Inverter board - even the B+ is good from the power supply, if the fuse, driver transistor, driver transformer is faulty no output to the backlight resulting to black picture.
3. Busted backlight - even inverter board is good but if this is busted resulting to black picture also.
Diagnosing the fault is technical and if you don't have necessary tools and test instrument and can't fix it yourself, I would advice you to look for an experienced technician to isolate the problem.
Hope I helped you.
Have a nice day!
Thanks for using Fixya.

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Hi tlc19732001,
Power on the unit in the dark room then shine with the flashlight directly in the screen, you will barely see the images. This is because your backlight is not functioning. The following reason is the caused.
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2. Inverter board - even the 24vdc is good from the power supply, if the fuse, driver transistor, driver transformer is faulty no output to the backlight resulting to black picture.
3. Busted backlight - even inverter board is good but if this is busted resulting to black picture also.
Diagnosing the fault is technical and if you don't have necessary tools and test instrument and can't fix it yourself, I would advice you to look for an experienced technician to isolate the problem.
Hope I helped you.
Have a nice day!
Thanks for using Fixya.

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Please do not attempt to diagnose if no competent.
Do at your own risk.
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