Vizio No pix NO sound & NO Menu !!!

[Ron.M]

Dear Person;..

Had a problem uploading pix..
Figured it out ...
SORRY about this error..


PLEASE see the next post...
THANKS..

Later...Ron.M... ...

[Ron.M]

Re: Vizio E420i-AO No pix NO sound & NO Menu !!!

Dear Person;...

First time posting here...
I'm a retired analog TV tech with 50+ years experience , 20 of which are self employed owning my own business....
That said...

I have been battling repairs on my Vizio model E420i-AO LED TV..
It was given to me by my ex-landlord's lady friend...
The original symptom was No pix, NO sound & NO menu...
Did the "flashlight test" & there was NO sign of video of any sort or a Menu...
The TV was turning ON , but , there were NO backlights..
After locating & replacing 6 defective LED Strips, I did get a pix..
See attached pix Vizio #2..
The TV turned on with a shading on the right side of the screen...
After a minute or two the pix got steadily worse...
See pix #1717...
After some more time the pix went to vertical lines on both sides of the screen..
See pix #1711-1...
That is the left side of the screen with part of the right side showing...
Pix #1715 is the right side..
When I used some freeze spray in the red circle in pix Vizio #3AB , the pix nearly totally returned to normal , albeit NOT 100%..
I think that that's where the Micro is located...
So , the Main Board was defective..
I got a replacement that turned out to be a dud..
That one went back & got a refund..
The next Main Board did turn the TV on..
However , there's NO pix , NO sound & NO Menu...
This is where I'm at now...
The last pix IMG_1725 is what I'm getting now...
The red dot is from the camera..
The vertical lines are ONLY on the left side...
IMHO , I think the LED Panel IS OK !!..
Reason is that the lines on the left side are different between the 2 replaced Main Boards & the absence of lines on the right side of the screen..

Your help & expertise ARE GREATLY APPRECIATED...

THANK you VERY MUCH in advance...


Later...Ron.M......

[ReeceyBurger123]

Re: Vizio No pix NO sound & NO Menu !!!

Panel fault IMO.

[Ron.M]

Re: Vizio No pix NO sound & NO Menu !!!

ReeceyBurger123;

Sorry about the delay in responding...
For some reason I did NOT get an email notice that someone replied here...

I appreciate your opinion...
The reason that I think the LED panel is OK is that with the original Main Board I got those vertical lines on BOTH sides of the screen..
Along with the shading on the right side , etc...
Freeze spray removed all the vertical lines & almost restored the pix to normal...
With the replacement Main Board I get vertical lines on the left side ONLY !!!
See pix below;=>..

AND there is NO video , NO audio & NO Menu..
So , before I start pulling my hair out , did I get a bad Main Board or can a bad Power Supply Board cause this ???
IF someone is CERTAIN that the LED panel IS bad , then the TV will find it's new home in the landfill..
So , fellas , what's the DEFINITIVE verdict ???
THANKS very much...


Later...Ron.M.......