Vizio 47" LCD/LED Smart Failing - AVS | Home Theater Discussions And Reviews
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post #1 of 4 Old 03-04-2015, 08:02 AM - Thread Starter
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Vizio 47" LCD/LED Smart Failing

VIZIO 47" HDTV XVT3D474SV had it in Bedroom with two remotes 03-03-2015
Wife said "it stopped" and changed it out with the 40" LCD tv, Sony Bravia. Stored 2 months.
I cleaned power plug, dusted, Checked batteries in remote's (bad) replaced only one set.
In office, it powered on by remote and the JAG wheel. Nice Pic & sound.
1st, I noticed some channals would not come on. Nice Pic & sound.
While watching, after ten minutes it lost the picture, had black screen, had sound, then it shut off.
White logo Blinks continually.
Orange logo when you plug it in. When you power on the logo turns white and continually blinks.
No picture or sound. Suspect LED driver board, CPU main mother board, power board, or T-Con (GPU) board.
I think main power supply circuit board may be bad. Amazon has used one for $50 Shopjimmy has one for $65
03-04-2015
update
This AM I unplugged the T-Con and powered plug, orange turned to blinking white, then in a minute this turned orange.
unplugged, next, I plugged in Cable antenae. Then I plugged back the T-Con. Replugged in the main power cable/plug.
I used remote and hit ON, and the TV came on with both picture & sound. This lasted 4 minutes, then lost the picture
to white screen, no picture. Sound is still working.
This TV has some thing failing when warmed up.

Any thoughts or advice would be Handy before I start
thowing parts at this issue.
Bill
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post #2 of 4 Old 03-04-2015, 12:21 PM - Thread Starter
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I'd like to narrow this issue to one of the four componet boards, and just replace that.
My guess is T-Con, as the screen went black. Any thoughts?
I do not have electronical tool$. All I need is my #2 phillips! Refurb or used board is OK

Power supply PCU board = Vizio 0500-0305-0860
GPU Timing control board = Vizio 3647-0062-0147 (9c)
LED driver board = Vizio 0500-0705-0070
Main video board = Vizio 3647-0342-0150 (4c)
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post #3 of 4 Old 03-07-2015, 08:25 AM - Thread Starter
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H E L P

When tv is cold or has sat a day, it will power on with great picture & sound, for one minute.
Then it loses the picture, BL is on, sound OK. Remote will not turn off. If unplugged, restart
will logo blink white & orange a minute, then go orange, hit remote on, no sound and a black
screen, and unable to turn off the tv with the remote control.
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post #4 of 4 Old 03-16-2015, 11:39 AM - Thread Starter
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Replaceing the Video board Fixed this problem. Now working great!
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