Repairing Westinghouse LCM-22w2 LCD monitor

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Bad Capacitors

This will be a short simple post. I bought this monitor (22 inch LCD Westinghouse LCM-22w2) back in June for $20 after my monitor died. It worked fine except for one problem: when the monitor went into ascreen saver mode, the screen turned white (instead of black). Some people called it white screen of death. The guy I bought it from said that it was a capacitor problem, but who knows?

When the white screen started to bother me, I opened up the back of the monitor. The towel on the table protects the screen.

LCM-22w2

Take the metal box out to get to circuit boards.

LCM-22w2

They sell capacitor kits that have all the capacitors, but in my case I could see that only three capacitors were bad. Three circles in the picture above shows those capacitors (each one 220 uF, 25 Volts). It was easy to see that they were bad because they were bulging at the top. All the others were perfectly flat.

LCM-22w2

Here is a picture after the three capacitors are replaced. I put in 220 mF, 50 Volt capacitors recovered from a broken TV. 50 Volts gives better safety margin.

LCM-22w2

Here is a close up picture of the three 220 uF (bulging) capacitors. It took me less than an hour to get this done. If I knew it would be this easy, I would have done this long time ago. :)

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5 Responses to Repairing Westinghouse LCM-22w2 LCD monitor

  1. Mike says:

    Replacing the three capacitors shown worked for me too. I used some avaliable at Radio Shack that were 35v 220uf. Thanks for your help.

  2. Flip says:

    Hey Nev, I have this same monitor and have been having the same issue as you.. I’m at the point of trying to get the metal box off in your second picture but can’t get if off due to the VGA/DVI ports being stuck in. Haven’t tried forcing it to hard, but can you let me know how you got that off? Thanks.

  3. Dom says:

    Flip, un screw the terimals holding the dvi and vga ports in, where you connect the cables, they hold the connectors in, also remove the screws from the power socket. Great post Nev, props for helping us out. Just going to note the big cap by the power socket on my model was 100 uf, and the one by the bar code on mine is horizontal, prob just different board revision. Also, my cap kit off ebay didnt include the 100 uf or the other bar code one, initially I replaced just the 2200 that was puffed and leaking and the monitor would not turn on, but after replacing the other 3 1000uf caps and 2 others just because they were easy to get to the display is working now!

  4. Joe Delpero says:

    Thank you very much for this article. I changed out 4 of the capacitors, the three 220′s and one 2200. I tried to get them from Radio Shack, but their shipping was twice as much as the cost of the capacitors. I had to buy a package of five 220 capacitors on Amazon with free shipping and no tax, but all together the total cost of the repairs was less than $6.00. Much better option than buying a new monitor. We are in too much of a throw away mode with our electronics. I had never attempted this type of repair and felt good about being able to fix the monitor. The monitor is working just fine. Thank you for posting this information.

  5. Bruce says:

    I have a Westinghouse LCM-22w2 LCD monitor, I have read many threads but getting a bit confused. I replaced the capacitors, did not help, I decided to get a new board from China a -> “DAC-19M009′

    It arrived. I placed the new board on main innards of this unit, but now when I turn it on, it shows “Video 1″ stays backlit for 3 seconds and as this is all happening it makes a strange noise, it’s not faint, it’s pretty easy to hear, it’s like a buzz/humm/buzz/screech. The light goes out and then the green led in the front stays on but the unit keeps making the weird noise.

    The board from China looks like it has very old and crappy parts, like capacitors etc, they just look weird and old, not sure if this is the problem or not, or maybe there is some other reason I can’t get this monitor to work again after replacing this board.

    Any ideas anyone? Grrr… Thanks in advance!

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