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Samsung Syncmaster P2350 Backlight turns off seconds after on

Samsung Syncmaster P2350 always turns off just right after having it turned off. The Power light touch buttons and LCD Panel work. ITs just the Light tubes that turn off. In the beginning the problem was very infrequent - not detactable by Samsung Lab. When it was frequent enough the P2350 was out of warranty already. So I am looking for a solution here. Thanks a lot in advance!

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6 Suggested Answers

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Posted on Jan 02, 2017

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SOURCE: Viewsonic VX900 turns on for second then shuts off

I had to replace a fuse(F1) on the inverterboard of my VX900 to get it back to life as fuzzytek sugested.

It was replaced by a normal "flat" fuse (for cars). Had no clue about the value, so I tried with 0,5A first. It blew right away. Next value I had was 2A, and it worked! (It might be too small, and it might be too big, but I think it is better to usa a "large" fuse rather than no fuse at all. :)

Some pictures from my installation:
481ef23.jpg

Posted on Apr 11, 2008

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SOURCE: Samsung SyncMaster 740N - backlight dead

Power on monitor is on but faint back light

Posted on Feb 22, 2009

  • 1684 Answers

SOURCE: Samsung 226BW 22" LCD wont turn on and flickers a blue light

Hello cstafford35,

Your monitor has a very common problem. The internal power supply has blown a part called a capacitor. If you are comfortable working with electronics and with soldering I can talk you thru the diag/repair. If you are not ready to tackle that we also offer a repair service, about $30 plus shipping for your model. Let me know if you want to try fixing it yourself and we can go from there. The repair will require opening the monitor case and replacing from 2 - 5 parts. You can call me at 318-447-9040 if you have questions.

Buddy
Corporate Computer

Posted on Jun 17, 2009

SOURCE: samsung

I have two of these, both of which were just dead. The back snaps off after the screws are removed and the power supply board is the small one with heat sinks and a number of vertically mounted electrolytic capacitors (cylindrical, maybe 1/2 inch in diameter, dark plastic covering, aluminum showing at the top). Some of the capacitors were bulged at the top which is always a bad sign. I decided to replace all of the capacitors in the area between the two heat sinks (six of them). The total cost from Digi-Key Electronics was under $9.00 including shipping.
820uF 25V (2)
1000uF 10V (2)
330uF 25V
330uF 10V
Get ones rated for 105 degrees centigrade.

Good as new!

Posted on Jun 20, 2009

benwabnick
  • 2404 Answers

SOURCE: samsung syncmaster 226BW no backlight

Look for any bulging capacitors, instead of a flat top they will look "pregnant".

If you see any of those then replace them with capacitors of the same UF rating and the voltage needs to be either the same or higher.

If you dont see any bulging capacitors or burnt parts, then its got be the LCD at that point thats not staying on and the cost to replace the LCD is as much if not more then to just get another monitor.


Posted on Aug 27, 2009

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