Question about ViewSonic VP211b 21.3" LCD Monitor
Just plugged in a second VP211b to run along side another VP211b I already have. I have a 8800 GTS video card and my original monitor works just fine. I can get the new one to run great for about an hour and then it will start to flicker and shuts off entirely. No power light..nothing. If I reboot the problem goes away or I can unplug the power to the monitor a minute or so and that will also fix it. I've tried several different power cords and several DVI cables...Same thing. I've even swapped the power and DVI cables from the working monitor and get the same results. Any ideas?
These monitors have a problem of poor quality capacitors. Loss of power as the monitor heats up suggests bad caps. Marginal caps perform worse at higher temps. I repaired a VP211b in 2006 by replacing C52 and C53 on the power supply board. These are 680 uF 25V. I replaced them with 1000 uF 25V because that is what I had on hand. The monitor worked good until now (2015).
Like yours, it would lose power as it heated up. This time the big capacitor on the power supply failed. It is 150 uF 400V. Replacing the bad cap fixed it. These electrolytic caps usually swell when they go bad. The top will curve upward. There may be some brown material leaking out. Any swollen cap should be replaced.
Posted on Nov 05, 2015
System and your display card in the system is fine, problem with LCD monitor please check for warranty.
If no warranty problem with power supply in your LCD Monitor....
Posted on May 31, 2008
It's internal..the video card/board inside may be weakening, with a thermal cut out that is built in, just for this purpose.
how long you had that one, and is it under warranty?
Posted on May 31, 2008
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Posted on Jan 02, 2017
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