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Vizio p702ui-b3 power board t-con voltage reading do not match what printed on power board

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  • Vizio Master
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According to the service manual on your set you should see 12 volts on the power fuse on the tcon board...what do you have

Posted on Apr 20, 2018

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Posted on Jan 02, 2017

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SOURCE: What the best picture setting for a Vizio P702ui b3 ..professionally

It depends on standard factory settings by each manufacturer of the TV. However, while you may keep the brightness, contrast and color settings as per standard settings of the TV (generally they are 50%), the LED backlight may be kept to the bearest minimum and depending on your viewing pleasure. This will enable long life to your LED Panel. If DCR is available, turn it off and manually reduce the backlight setting to the bearest minimum.

Posted on Mar 29, 2015

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How do I replace the LED driver on a Vizio P702ui-b3?


Its part of the power board but are you sure that's the problem, more times than not its bad lamps not the LED driver bad.

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There is a chance its the Tcon but it could be the main or cables and connectors as well...or the ***** sentence of a bad panel...one nice thing about timing boards they aren't usually very expensive

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Why my TV will not turn on?


Check the fuse first. Then verify if the different supply voltages are present using a voltmeter. Your board can be repaired or replaced from here: TV Parts Universal TV Stands DLP Chips ShopJimmy

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1 Answer

I have the common "color contouring" problem (red lines and dots in the deep dark grey and black areas). I replaced the t-con (lcd controller) board 3 times, and each time it fixed the problem for a couple...


The T-CON board get the power from the logic board switched transistor that supplies the voltage to the T-CON board. Check to see if the 12vdc feeding the T-CON board is clean voltage and not higher than 12vdc. The problem can also be the logic board which sends the signals to the T-CON board. Does cooling the T-CON board with electronic freeze spray make the problem goes away. Some of the work I have to do is to install a small DC fan to keep the T-CON board cool and some time using heat sinks.
http://s807.photobucket.com/albums/yy352/budm/VIZIO%20L32HDTV10A/

http://s807.photobucket.com/albums/yy352/budm/LTV-32W3HD/

Please see my basic troubleshooting guide here:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide

http://s807.photobucket.com/home/budm/allalbums

http://en.wikipedia.org/wiki/Capacitor_plague
Parts: www.shopjimmy.com

Jun 26, 2010 | Vizio SV470XVT 47 in. LCD TV

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