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Repair faulty (dim) LCD display?

post #1 of 5
Thread Starter 
I was at a client's office this morning picking up some old workstations for recycling. One of the partners saw what I was doing and asked if I would also take his LCD monitor from home that had burned out (he had it in his truck). He said that he didn't mess around with it very much, just went out an got a new monitor when this one started acting up, and that if I could get it to work, I could keep it.

It's a Samsung 225BW, decent monitor. I got a bit excited when I saw it because I have two 245BW (same series, 24" version) displays at home and I would love to have the 225BW as a monitor for my workbench.

225bw_01.jpg

So I brought it into the office to test it out. The monitor powers on just fine but the on-screen image is very dim (bright enough to see that something is being displayed but too dim to make out any text ). Strangely, if I turn the monitor off then turn it back on when it's connected to an active system, the screen displays normally for 1-3 seconds then reverts to the very dim state. I have tried VGA and DVI. Same result with either.

Is this fixable? If so, is it worth the money (if required) and effort to fix?
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CPUMotherboardGraphicsRAM
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F115 W7P64 245BW SPI Magna 1kW 
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post #2 of 5
It may be a back lighting problem, or some wire is toast, most monitors have a pretty decent warranty on them though, try looking it up and seeing if you can RMA it, always worth a shot as well!
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post #3 of 5
Thread Starter 
From the limited research that I have done, it appears that it's most likely a backlight or inverter issue.

However, it seems that my OP may have been a bit premature. After wiggling the power and video cables and flipping the on/off switch on the back of the display a few times, the picture is back! No guarantees that it will stay working but it's been OK for the last hour or so.
At long last...
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CPUMotherboardGraphicsRAM
920 D0 | 4104MHz@1.23V Big Bang XPower 5850 | 880/1050 6GB Sector 7 | 1728MHz 
Hard DriveOSMonitorPower
F115 W7P64 245BW SPI Magna 1kW 
Case
cardboard (case/loop in prog) 
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At long last...
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CPUMotherboardGraphicsRAM
920 D0 | 4104MHz@1.23V Big Bang XPower 5850 | 880/1050 6GB Sector 7 | 1728MHz 
Hard DriveOSMonitorPower
F115 W7P64 245BW SPI Magna 1kW 
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post #4 of 5
I have fixed about seven or eight syncmaster 225bw's from my work, all of them were failing capacitors. I would definately pop it open and look for bulging capacitors on the power board. Should be two 720uF 25v and one 330uF 25v if memory serves me right biggrin.gif
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Intel i5-3470 ASRock H61MV-ITX GIGABYTE GeForce GTX 1060 Mini ITX OC 3GB 16GB (2x8GB) PNY DDR3-1600 
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post #5 of 5
Thread Starter 
Quote:
Originally Posted by Aestylis;12697420 
I have fixed about seven or eight syncmaster 225bw's from my work, all of them were failing capacitors. I would definately pop it open and look for bulging capacitors on the power board. Should be two 720uF 25v and one 330uF 25v if memory serves me right biggrin.gif

Excellent information, thank you very much.

If the display starts to act up again I will know where to look!
At long last...
(13 items)
 
  
CPUMotherboardGraphicsRAM
920 D0 | 4104MHz@1.23V Big Bang XPower 5850 | 880/1050 6GB Sector 7 | 1728MHz 
Hard DriveOSMonitorPower
F115 W7P64 245BW SPI Magna 1kW 
Case
cardboard (case/loop in prog) 
  hide details  
Reply
At long last...
(13 items)
 
  
CPUMotherboardGraphicsRAM
920 D0 | 4104MHz@1.23V Big Bang XPower 5850 | 880/1050 6GB Sector 7 | 1728MHz 
Hard DriveOSMonitorPower
F115 W7P64 245BW SPI Magna 1kW 
Case
cardboard (case/loop in prog) 
  hide details  
Reply
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