Author Topic: Tv boards swap firmware chips  (Read 544 times)

0 Members and 1 Guest are viewing this topic.

Offline Hornnumb2

  • Contributor
  • Posts: 36
  • Country: us
Tv boards swap firmware chips
« on: December 08, 2019, 09:46:59 pm »
I have a Vizio 651-a2r that the main board has failed, I am unable to find the exact board but have found a similar board that does work in the unit. If I go into system info it list the model number of wrong unit. The boards look the same other than firmware version. Could I swap the firmware chips to correct the info. The board is out of an 501-a2r. How do I tell which chip it is? Thanks Michael
 

Offline fzabkar

  • Frequent Contributor
  • **
  • Posts: 525
  • Country: au
Re: Tv boards swap firmware chips
« Reply #1 on: December 09, 2019, 08:54:10 am »
A photo of the board would help.
 

Offline Hornnumb2

  • Contributor
  • Posts: 36
  • Country: us
Re: Tv boards swap firmware chips
« Reply #2 on: December 09, 2019, 03:16:09 pm »
Here are some pics of the board front and back, if you need a higher res of a certain part I can take one. Thanks Michael


https://www.shopjimmy.com/vizio-91-75q10-c01g-main-board.htm
 

Offline pepona

  • Contributor
  • Posts: 23
  • Country: ar
Re: Tv boards swap firmware chips
« Reply #3 on: December 09, 2019, 07:08:17 pm »
Hi Hornnumb2, if the boards looks the same it will work.
The best practice is first to save the content of the memories in case of a failure.
Often the firmware is the same so you only must swap the eeprom  wich contains the data configuration to that specific TV model.

Hope you can understand me.

Sorry for my bad English.

Regards
Marcos.
 

Offline fzabkar

  • Frequent Contributor
  • **
  • Posts: 525
  • Country: au
Re: Tv boards swap firmware chips
« Reply #4 on: December 09, 2019, 08:20:49 pm »
I think the flash memory at U4 (on the underside) would hold the firmware.
 

Offline Hornnumb2

  • Contributor
  • Posts: 36
  • Country: us
Re: Tv boards swap firmware chips
« Reply #5 on: December 09, 2019, 08:44:39 pm »
This is the board I purchased, I was told by seller that it wouldn't work because firmware was different so I am not positive about that. Just when you go into system info on the tv it list it as an M501D-A2R instead of M651-A2R. So I am not sure what I need to change, or just leave it alone...

https://www.ebay.com/itm/VIZIO-M501D-A2R-Main-Board-92-75Q10-A01G-55-75Q01-001/362783733124?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649
 

Offline Hornnumb2

  • Contributor
  • Posts: 36
  • Country: us
Re: Tv boards swap firmware chips
« Reply #6 on: December 09, 2019, 09:37:23 pm »
I will check the firmware tonight when I get home and see if the version numbers are different.
 

Offline NiHaoMike

  • Super Contributor
  • ***
  • Posts: 5956
  • Country: us
  • "Don't turn it on - Take it apart!"
    • Facebook Page
Re: Tv boards swap firmware chips
« Reply #7 on: December 10, 2019, 01:09:27 am »
A few weeks ago, I opened up an old TV that was having intermittent problems, problem was the user settings ("NVRAM") in Flash got corrupted, I just cleared it from the bootloader and it seems to be working fine. In short, there's the chance the Flash contents are the cause of the problem. If it works fine, just let it be.
Cryptocurrency has taught me to love math and at the same time be baffled by it.

Cryptocurrency lesson 0: Altcoins and Bitcoin are not the same thing.
 

Offline Hornnumb2

  • Contributor
  • Posts: 36
  • Country: us
Re: Tv boards swap firmware chips
« Reply #8 on: December 10, 2019, 02:28:46 am »
Looks like I can update the board to the same firmware by just getting it on the network. It will just have the wrong serial number and model unless that’s a easy swap. Thanks Michael
 


Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf