Vizio E701i-A3 stuck at logo, need service manual

[paulxxxx]

The TV stuck at logo and cannot be turned off unless the cord is unplugged.
I was given two main boards and exactly the the same thing happens to both of them.
I have checked all voltages on the connector on the power board that goes into the main board and they all look OK.
There are no signs of damage on any of the 3 boards.

Would someone help me with a pointer to the manual? It's supposedly to be the same as E601i-A3.

Thanks!

[paulxxxx]

Re: Vizio E701i-A3 stuck at logo, need service manual

Some comment please!

One of the main board has resin bubbles on the back of the PCB where the front side is the main processing chip. The chip and surrounding areas are covered under a metal shield that I am not able to remove due to lack of tools.

The TV seems to have 5 boards:

Main board
T-con board
Power board
IR board
Key board

The power board seems to be OK since the voltages on the connector are good.
The T-con board should be OK since there is the picture of the logo on the screen.
My focus in on the main board, but could IR and Key board cause something like this?

[EazyBone]

Re: Vizio E701i-A3 stuck at logo, need service manual

Voltages to tcon are consistent? I'm not a super expert but as far as I know the main 2 chips on main board are very problematic. Those bubbles, I have made myself by trying to reflow something. Why they would be on the back makes no sense, but seems like someone tried to repair?

Even though you have 3 main boards... I still suspect main board lol. Freezing logo through my research is main board.

I am not an expert but I have fixed a couple Vizio's by reflowing the chip. Why do you have 3 boards also. Did someone give you them all? Let's me think none of them worked in the first place

[williej]

Re: Vizio E701i-A3 stuck at logo, need service manual

Hope this help.

[paulxxxx]

Re: Vizio E701i-A3 stuck at logo, need service manual

Hope this help.

Thank you.
Exactly what I am looking for.

[paulxxxx]

Re: Vizio E701i-A3 stuck at logo, need service manual

Voltages to tcon are consistent? I'm not a super expert but as far as I know the main 2 chips on main board are very problematic. Those bubbles, I have made myself by trying to reflow something. Why they would be on the back makes no sense, but seems like someone tried to repair?

Even though you have 3 main boards... I still suspect main board lol. Freezing logo through my research is main board.

I am not an expert but I have fixed a couple Vizio's by reflowing the chip. Why do you have 3 boards also. Did someone give you them all? Let's me think none of them worked in the first place

Actually two main boards. The previous guy gave up. He told me the problem might be in the EEPROM.

I have ordered a high power soldering iron and a heat gun. With that, I would be able to get the metal shielding off and access the chips in front. The back side of the board has components mounted on it. That is where I saw the bubbles.

[nomoresonys]

Re: Vizio E701i-A3 stuck at logo, need service manual

Post good clear straight on pictures of each board and one of the whole back as to see how everything is connected.

[nomoresonys]

Re: Vizio E701i-A3 stuck at logo, need service manual

So what happened paulx?? you give up too?