Re: e701i-a3 no picture but backlights

I have a working TV! It appears that there may be one bad LED in the backlight, though.

The T-con I used was part RUNTK5489TPZA, thanks to Charleyd's post ([url]https://www.badcaps.net/forum/showpost.php?p=781175&postcount=797[/url])

I paid $9 for mine on ebay. Started up TV with RIGHT side (Vizio logo side) drivers disconnected, and got good left picture.

Proceeded to remove right side drivers, and it came right up!

It is difficult to see on the test pattern, but much more visible...

Re: e701i-a3 no picture but backlights



I can power up, and I do have backlight. I do not have a remote and I have no idea what input the TV is on. It was advertised as 'sound but no picture' when I got it....

Re: e701i-a3 no picture but backlights



I found one and have it on the way for $9.

I think from the looks of this driver that I *do* have a bad panel and likely a blown FET on the T-con. This is the so-called 'right' side; the driver at the bottom of the screen closest to the 'Vizio' logo:

[url]https://i.imgur.com/32O4au8.png[/url]


Compared to the other drivers on that same side, it's the only one with brown 'staining' towards the white lettering on the cable.Re: e701i-a3 no picture but backligh...<br /> <br />...

Re: e701i-a3 no picture but backlights



I disconnected the twisted-color cable from power board to main board at the power board, then plugged into AC - no backlight at all.



I figured I'd start from bad panel that way if someone had spares they'd be willing to send, I could get them on the way while I do the rest of the testing.



I was too busy to get into the t-con, I just guessed that it must have been the failure point. Pulled the board just now; according to freakaftr8:

[I]You need to set your...

Re: e701i-a3 no picture but backlights

Hey all, I just picked up a Vizio E70i-A3E for free that was "sound but no picture." Backlight works, but I'm sure the T-con is shot so I can't test left or right side drivers to see which ones to peel off.

First question - is the ribbon cable to disconnect the one that goes into CN15?

Second question - does anyone have spare MOSFETs they would mail 2 or 3 of to PA (18603)? I'd rather send one of you folks a couple bucks than give it to a random ebay seller.

Thanks for all the info - I almost...

Re: New Members - please post your introductions here

Hi all, my name's Jeff from PA. I'm a general all-purpose geek; cars and computers mostly. I'm here for help with TV repairs as I am slowly building up an official business doing computer & electronics repair. Once it gets big enough I'll quit my day job as and IT admin and switch to running my business full time.

Re: Sharp LC-70LE757U Flashing 2-5 :-( can it be saved economically?



Thanks - I'll hunt down that thread and ask questions over there so as to not derail this one....

Re: Sharp LC-70LE757U Flashing 2-5 :-( can it be saved economically?

Howdy folks! First post here.

I recently had opportunity to pick up a Vizio E70i-A3E for the low, LOW price of free - problem is, it's got sound and backlight, but no picture. So down the road of 'new mainboard' I started to go...and ran across a post on AVS Forum that had a link to here. As you folks still seem active, I figured I'd check in here first.

If the T-con is blown, will I still be able to unplug the corner cable and test which side is bad, or will I need to have a working...