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My Visio E701i-A3 the sound and audio were both not working ! I replaced the main and got audio . Voltages seem ok on power bd . Screen has no menu and backlight seems on and dims a couple seconds then brightems again when pushing input ! From what i could tell I had no readings on gate , source or drain ! Possible fix with TCON ?
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Brent Mason check to see if you have continuity on the fuse F101 on the t-con board. After that you want to check the voltage on it. Red probe to either end of the fuse black probe on ground. Meter in DC voltage on 50V scale should work. After that check the voltage on CN301 on the power board. Red probe on the VLED1+ and black probe on VLED1- and so on. Let us know what the voltages are. If you have no power on CN301 you know it is the power board. If you have power going to the LED's it is most likely the T-con board.
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Have continuity on F101 , can’t quite remember but think 15.?? Volts , CN301 all 165v
I already ordered a T-Con !
Okay let us know how it works out.
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Brent Mason "Voltages seem ok on power bd" did you measure those? What where the results? ". Screen has no menu and backlight seems on and dims a couple seconds then brightens again" The screen is lighting up and you can make out the backlight? Possibly a -tcon board error. Post some good images of all of your boards and the layout of them with our question. That way we can see what you see. Use this guide iFixitでの質問に画像を追加する方法 for that
oldturkey03 さんによる
Added pics ! Also wondering how i can stay away from Chinese board when I buy one ? I only checked power bd where the main bd connection is !
Brent Mason さんによる