I have a Vizio VS420LF1A that i had previously posted about here in this forum.
The back light and lcd was not coming on at all, yet the Vizio logo at the bottom was turning white. After testing several components i just gave up and purchased a new (used) PSU off ebay. I connected it and the TV worked great for 2 months or so. Unfortunately now Im having a problem where the tv will come on and work fine, but then the back light and lcd will just turn off (vizio logo still white) sometimes after several hours of use, or sometimes after just a few min. If i turn off the tv and let it sit for a few min after this happens, it will work for awhile, sometimes hours, sometimes just mins. Yesterday, the tv was on for several hours and worked perfectly, then towards the end of the night, it started doing it again. Im a bit puzzled as to why sometimes it works fine, then other times it exhibits this issue. I checked for obvious stuff like blown/bulging caps on the psu, but all looks well. I have pics that i took previously for the other thread available here
The back light and lcd was not coming on at all, yet the Vizio logo at the bottom was turning white. After testing several components i just gave up and purchased a new (used) PSU off ebay. I connected it and the TV worked great for 2 months or so. Unfortunately now Im having a problem where the tv will come on and work fine, but then the back light and lcd will just turn off (vizio logo still white) sometimes after several hours of use, or sometimes after just a few min. If i turn off the tv and let it sit for a few min after this happens, it will work for awhile, sometimes hours, sometimes just mins. Yesterday, the tv was on for several hours and worked perfectly, then towards the end of the night, it started doing it again. Im a bit puzzled as to why sometimes it works fine, then other times it exhibits this issue. I checked for obvious stuff like blown/bulging caps on the psu, but all looks well. I have pics that i took previously for the other thread available here
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