Vizio E701i-A3 no Pic or sound but has backlight

[Ltank]

Before I start. Can the back be removed while leaving the stand in place? It appears that the stand has to come off 1st before removing the back. Set has backlight but no menu makes me suspect the M.B. I connected a HDMI signal but got no sound. With no video all I can do is cycle through the inputs with the remote. Set is too heavy to remove off stand with two people. Need one on each end and one to remove the stand.

[audiofreak19]

Re: Vizio E701i-A3 no Pic or sound but has backlight

Can you see the inputs change on the screen.

[Ltank]

Re: Vizio E701i-A3 no Pic or sound but has backlight

I found a owners manual. The stand has to come off. I was able to cycle through the inputs and I do have sound. There is the faint glow of backlights when pressing some of the remote buttons. Hope to get some help with set on stand to remove back. Set is on the stand band all the screws are out. guess the thing is snapped together too!

[Ltank]

Re: Vizio E701i-A3 no Pic or sound but has backlight

Back is off finally. T-Con fuse F101 was good. No menu. Have volume control manually. HDMI 1 and 2 have sound. Bad Main board or T-Con? I could not find a service manual.

[Ltank]

Re: Vizio E701i-A3 no Pic or sound but has backlight

Does anyone have a T-Con schematic for CPWBX RUNTK5261TP ZH. There are some small test points near the ribbon cable inputs on the T-Con that come from the Main Board. If the inputs are good then it should be the T-Con. If the inputs to the T-con are bad the it should be the Main Board. Shop Jimmy info on these two boards are misleading.
The voltage was good on both sides of the fuse. 12.5 vdc.
Thanks Guys

[Ltank]

Re: Vizio E701i-A3 no Pic or sound but has backlight

I see many M.B. 1P-012BJ00-4012 for 70" sets. The part number shows up for both the 60 and 70 inch set searches.
Will a board from a 60" work on the 70"? With menu setup changes?

[ecking767]

Re: Vizio E701i-A3 no Pic or sound but has backlight

your problem is most likely to be the T-CON, since you are getting sound, back-light and the TV turns off/on. Vizio model # E601i-A3 and E701i-A3 are known for having T-CON board failures.

[aaronwt6]

Re: Vizio E701i-A3 no Pic or sound but has backlight

I agree on the T-con being the issue. And, neither the T-con nor the Main are interchangeable between the 60" and 70".

[triplefour]

Re: Vizio E701i-A3 no Pic or sound but has backlight

dang i thought i read on shopjimmy the motherboards were interchangeable

[triplefour]

Re: Vizio E701i-A3 no Pic or sound but has backlight

from http://www.shopjimmy.com/sharp-runtk...-con-board.htm
"
Board Number(s): CPWBX5261TPZH
Substitute Parts: RUNTK5261TPZC
RUNTK5261TPZE
RUNTK5261TPZZ
RUNTK5261TPZG
RUNTK5261TPZK
RUNTK5261TPZJ
RUNTK5261TPZN
RUNTK5261TPZM
RUNTK5261TPZA
RUNTK5348TPZA
RUNTK5348TPZZ
RUNTK5348TPZB
RUNTK5348TPZC
RUNTK5348TPZD
RUNTK5345TPZC
RUNTK5345TPZB
Panel Manufacturer: Sharp


Important Message: Look for the ZH stamped on the board.

IMPORTANT: The following picture symptoms indicate a bad LCD panel, and NOT a bad T-con board:

-One side of the picture is darker than the other
-Picture has horizontal line(s)
-A dark, cloudy spot spreads across the picture

Installing a new T-con board in a panel with one of the defects above will result in damaging the new board.
"


is this true? can a bad panel ruin a new tcon?

[triplefour]

Re: Vizio E701i-A3 no Pic or sound but has backlight

thing is, im trying to fix my friends tv which has the same problem of blank backlit screen with sound. it's the VIZIO E701I-A3 which came with the ZH stamp on the t-con but i didnt notice that when i ordered the ZE one by mistake which i guess is for the 60" tv. are we sure that the result of a mismatched but functioning TCON and panel would result in the same backlit blank screen? or would you maybe see a corrupted image of the wrong size?

what volts would you expect to see on the ribbon cable connecting the tcon to the panel? and how do you measure them without touching two of them together with the probe? the pin pitch is so tiny.


edit: great and it turns out i ordered the wrong motherboard too.

guess i gotta get my hands on the correct parts and try again. why didnt i check the forum first?!?! stupid stupid stupid!

anyone need parts for the 60" ?

[Jasams74]

Re: Vizio E701i-A3 no Pic or sound but has backlight

I found a owners manual. The stand has to come off. I was able to cycle through the inputs and I do have sound. There is the faint glow of backlights when pressing some of the remote buttons. Hope to get some help with set on stand to remove back. Set is on the stand band all the screws are out. guess the thing is snapped together too!

I have the same issue with my vizio e601i-a3. How did you check the sound without being able to see the menu? This tv was given to me after it went out and the owner said that the sound came on but I wanted to be sure.

[Ltank]

Re: Vizio E701i-A3 no Pic or sound but has backlight

Most people use HDMI 1. I test that 1st with a single of picture and sound. If no sound then cycle through all the other inputs. If the main board is processing sound then one of inputs will work.
When you find the one with sound that would be input that is selected even though you have no menu on the screen.