Vizio M420SV stuck on boot logo

[alexrodri026]

Hi Alex here, first thread too
Ive got a Vizio M420SV with a main board : 0171-2272-3715
The other identifiers on the board include: 3642-1252-0150(5A) and CSD:3642-1252-0395
The issue is : Stuck at Vizio boot logo

Im at a loss, Ive been trying to figure out where the EEPROM is located at.

I find information for the model of tv but with Main Board numer: 0171-2272-3714

Not sure if the 3714 is just an earlier revision of version 3715.

But i almost cannot find info for 3715. Maybe Im using the wrong identifier.
Im also looking for 3642-1252-0150 but some do not have the connection to connect the wifi adapter.

Anyways aside from the end can any of yall help me locate the eeprom to test so I can either R&R or make the decision to replace the board.
Thank you!!
First thread whoop whoop i do praise this forum for helping me as a guest on several samsung tvs though just now i decided to register when i should have a while ago

[budm]

Re: Vizio M420SV stuck on boot logo

You can contact shopjimmy to verify.
http://www.shopjimmy.com/vizio-3642-...for-m420sv.htm
The number on the barcode sticker is the one you should use for PCBA (PCB ASSEMBLY)
The 0171-2272-3715 is the blank PCB P/N.

[alexrodri026]

Re: Vizio M420SV stuck on boot logo

Thank you shall message them! Im mainly trying to locate the eeprom and you just took a million questions off of my mind

[Nick's Tvs]

Re: Vizio M420SV stuck on boot logo

I bet you this board uses an EMMC chip as the eeprom chip and that its under that little black heat sink above the large grey heat sink.
SJ photo link below
http://assets.shopjimmy.com/media/ca...0150-top_1.jpg

Try freezing that chip and see what happens.

[Nick's Tvs]

Re: Vizio M420SV stuck on boot logo

For anyone that reads this thread in the future. This board does not have a regular 8 pin eeprom chip but instead uses a NAND chip on the back side of the board. That is what you need to replace. People sell them on ebay