Hello, I am happy I found this place.
I have a Viewsonic VA1912wb that started out with one problem and ended up with another.
It began with a flicker that would go away after the display warmed up. It got gradually worse so that it would flicker constantly, but the colors were good this whole time.
So I surfed around on the net and found that people were replacing bad caps on the power board for this problem. I popped the case open and found 2 caps that were bulging on top. These were twin 220uF 25V caps. I replaced them with ones from Radio Shack. They were 220uF and 35V.
When I powered back on, the flicker was gone but now all the colors look inverted. The picture on the desktop almost appears as a negative image.
So, knowing Radio Shack parts can be crap, I thought maybe it was the new caps. So I ordered more caps from digikey. All panasonic FM series.
I re-replaced the 2 220uF caps, and two related 1000uF caps I thought might help. NO DICE.
There are two other caps I ordered replacement for (2200uF 10V and 1000uF) but have yet to replace. I would like to find out if I am on the right track or if maybe the thing is fried.
The kicker is that the flicker (the original problem) is gone... but I inherited another one in the process.
I tried to be as detailed as possible, and included lots of pics.
TIA for any suggestions.
I have a Viewsonic VA1912wb that started out with one problem and ended up with another.
It began with a flicker that would go away after the display warmed up. It got gradually worse so that it would flicker constantly, but the colors were good this whole time.
So I surfed around on the net and found that people were replacing bad caps on the power board for this problem. I popped the case open and found 2 caps that were bulging on top. These were twin 220uF 25V caps. I replaced them with ones from Radio Shack. They were 220uF and 35V.
When I powered back on, the flicker was gone but now all the colors look inverted. The picture on the desktop almost appears as a negative image.
So, knowing Radio Shack parts can be crap, I thought maybe it was the new caps. So I ordered more caps from digikey. All panasonic FM series.
I re-replaced the 2 220uF caps, and two related 1000uF caps I thought might help. NO DICE.
There are two other caps I ordered replacement for (2200uF 10V and 1000uF) but have yet to replace. I would like to find out if I am on the right track or if maybe the thing is fried.
The kicker is that the flicker (the original problem) is gone... but I inherited another one in the process.
I tried to be as detailed as possible, and included lots of pics.
TIA for any suggestions.
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