Question about Vizio SV421XVT 42 in. LCD TV
Possible bad source, bad cable or connection was made with units powered up which HDMI does not like.
First thing to try in this case is to remove power from set and whatever unit is connected via HDMI and disconnect the cable itself.
Wait for several minutes, connect HDMI again and THEN return power to the units that were removed from power, this cannot hurt and may help or correct this issue.
Failing this try if possible to connect using component connections.
Posted on Dec 10, 2012
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Posted on Jan 02, 2017
SOURCE: no video/picture
Solution is to get it fixed (hopefully under warranty).
I have the same issue after owning the Vizio 42" LCD for just 5 months. They are coming to replace the part this week. I will also be purchasing the extended warranty as well, to avoid this problem in the future.
Posted on Sep 15, 2008
SOURCE: vizio vw42lhdtv10a 42
check out the power supply board! Look for popped capacitors. They either leak or swell up. They are the can shaped things on the board with the plastic coverings on them...you can usually see a swollen cap sticking up over its covering as a telltale sign.
Good luck and be careful
Posted on Mar 16, 2010
SOURCE: My Vizio 42" LCD SV421XVT
U getting a non respones from ur remote or the manual side panel tv controls buttons wright.U already tries resetting it back to factory setting.But the problems still the same.Yes,the tv Tuner signal board is the causes and the problems.Tries websites like Shopjimmy.com,Ebay.com to buy a refurbish tv Tuner signal board for the replacement.
Posted on Dec 11, 2010
The image processor - the one that generates the image from the data on the channel signal - has failed. You must replace the entire LCD controller board - the one that has the processor. Here it is
Posted on Feb 14, 2011
SOURCE: Vizio SV421XVT won't turn on.
When you say it does not turn on, do you mean that the LED at the front indicates its on but there is no picture or sound or is it stuck in standby mode? Please provide this info so that I can tell you what the problem is and how to fix it.
Posted on Jul 03, 2011
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