Question about Samsung SyncMaster 2253BW LCD Monitor

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Monitor briefly shows video then gone when turning on. Eventually comes up but getting harder to show screen.

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The backlight is going bad. This is actually common on alot of LCD monitors. It is actually not easy to find the correct length backlight (CCFL) for this size monitor and even if you did find it, it is very very hard to install. I used to do this for laptops when it was worthwhile to replace the backlights but the cost of these monitors keeps going down and down that even the labor to replace it is not enough to waste your time on it.

In the end, sell it on ebay cheap and buy another one, unless there is warranty on it, in which case, get it replaced! :)

Posted on Oct 13, 2010

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Posted on Jan 02, 2017

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Dell dimension 4700 pc monitor screen turns black


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There's a good chance you have failing electrolytic capacitors either in the power section or the inverter section or both.
Any caps in these sections that look bulged at the top, or bulged/leaking at the bottom need to be replaced.
If you repeatedly turn it on, eventually it'll probably stay on, but every time you turn it off, the TV will get harder and harder to start up until one day it just won't.
Sometimes you have to do the opposite to start it up and unplug it for 5 mins, then try.

If you aren't tech savvy, this unit needs to go in for repair.

If you are handy with a soldering iron and can identify the power supply and inverter / FM section for the backlights, an inexpensive handful of capacitors will likely fix you right up.
Match the capacitance on the capacitors. Go over voltage if you can, and still have them fit.
IE - it's not a bad idea to replace a 10V cap with a 16V or 25V or even a 50V, but don't replace a 680uF cap with a 500uF or a 1000uF (unless you are positive it's only doing ripple filtering).

Most of the caps that go are 10V 1000uF or 3300uF.

I found some great videos of the procedure (for different brand, but same issue) on youtube.
http://www.youtube.com/watch?v=Mm51C_RDIZE
http://www.youtube.com/watch?v=BNHHrgX_6cs&feature=related
http://www.youtube.com/watch?v=8l0AUj8QUkg&NR=1&feature=fvwp
http://www.youtube.com/watch?v=Y7b_nTaZYcU&feature=related

As you can see, this issue spans plasma TVs, as well as large and small LCD TVs and monitors.
The parts are cheap, and skill required is minimal.

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When turn on, get a picture for a fraction of a second then blank


you need your power supply repaired. you have bad capacitors.

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Hello

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