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RCA main board...

H

Hilda Winkler

Guest
Hi Group, need help choosing a main board for an RCA TV model .. led32c45rq.. main board # fre01m3393lna35-a2.. i want to know if this board ..42RE01M3393LNA35-A2 Main Board for LED42C45RQ will work in replace of the one mentioned ???
 
O

ohg...@gmail.com

Guest
On Monday, December 7, 2020 at 9:03:09 PM UTC-5, hildawi...@gmail.com wrote:
> Hi Group, need help choosing a main board for an RCA TV model .. led32c45rq.. main board # fre01m3393lna35-a2.. i want to know if this board ..42RE01M3393LNA35-A2 Main Board for LED42C45RQ will work in replace of the one mentioned ???

The only way is to try it. There are two potential problems of high probability: the keyboard switches may not work as assigned, and you may have no picture, a badly pixelated picture, or an upside down picture because these boards don\'t drive the same screen. If the board is close enough, swapping the eeprom from the original board will usually fix the picture issues and likely the keyboard issues, but that\'s assuming the original eeprom is good. Since the eeprom is the most likely cause of any non-lightning failures of these boards, you may be moving a bad eeprom into a good board.

I\'ve done that type of swap when I had a board in stock as it only takes a few minutes to try it, but wouldn\'t order a board for the attempt.

Did you confirm the power supply is OK? Getting standby 5V is not enough. You can jump the stby pin to the ps on pin and see if the 12V comes up. If it doesn\'t, the power supply is bad. If it does, it\'s the main.
 
A

Adrian Caspersz

Guest
On 08/12/2020 12:50, ohg...@gmail.com wrote:
On Monday, December 7, 2020 at 9:03:09 PM UTC-5, hildawi...@gmail.com wrote:
Hi Group, need help choosing a main board for an RCA TV model .. led32c45rq.. main board # fre01m3393lna35-a2.. i want to know if this board ..42RE01M3393LNA35-A2 Main Board for LED42C45RQ will work in replace of the one mentioned ???

The only way is to try it. There are two potential problems of high probability: the keyboard switches may not work as assigned, and you may have no picture, a badly pixelated picture, or an upside down picture because these boards don\'t drive the same screen. If the board is close enough, swapping the eeprom from the original board will usually fix the picture issues and likely the keyboard issues, but that\'s assuming the original eeprom is good. Since the eeprom is the most likely cause of any non-lightning failures of these boards, you may be moving a bad eeprom into a good board.
Programmed eeproms also seem available on eBay, bit of a markup though.

It\'s not difficult to make a programmer, running out of a parallel port
of an old PC. Or using an SBC such as a Raspberry-Pi.

--
Adrian C
 
O

ohg...@gmail.com

Guest
On Tuesday, December 8, 2020 at 2:24:15 PM UTC-5, Adrian Caspersz wrote:
On 08/12/2020 12:50, ohg...@gmail.com wrote:
On Monday, December 7, 2020 at 9:03:09 PM UTC-5, hildawi...@gmail.com wrote:
Hi Group, need help choosing a main board for an RCA TV model .. led32c45rq.. main board # fre01m3393lna35-a2.. i want to know if this board ..42RE01M3393LNA35-A2 Main Board for LED42C45RQ will work in replace of the one mentioned ???

The only way is to try it. There are two potential problems of high probability: the keyboard switches may not work as assigned, and you may have no picture, a badly pixelated picture, or an upside down picture because these boards don\'t drive the same screen. If the board is close enough, swapping the eeprom from the original board will usually fix the picture issues and likely the keyboard issues, but that\'s assuming the original eeprom is good. Since the eeprom is the most likely cause of any non-lightning failures of these boards, you may be moving a bad eeprom into a good board.
Programmed eeproms also seem available on eBay, bit of a markup though.

It\'s not difficult to make a programmer, running out of a parallel port
of an old PC. Or using an SBC such as a Raspberry-Pi.

--
Adrian C
I offered to email him the .bin file but the OP doesn\'t have a programmer. Besides, the time to have a cheap programmer for TVs is ending. Most TVs made in the last couple of years are \"smart\" and they use memory on BGA chips, not easily replaceable 25 series eeproms.
 
F

Fox\'s Mercantile

Guest
On 12/8/20 1:24 PM, Adrian Caspersz wrote:
It\'s not difficult to make a programmer, running out of a parallel port
of an old PC. Or using an SBC such as a Raspberry-Pi.
Or, you could just buy the right tools to do it correctly.
<https://www.ebay.com/itm/133033993647>
For $60.23


--
\"I am a river to my people.\"
Jeff-1.0
WA6FWi
http:foxsmercantile.com
 
O

ohg...@gmail.com

Guest
On Tuesday, December 8, 2020 at 3:54:57 PM UTC-5, Fox\'s Mercantile wrote:
On 12/8/20 1:24 PM, Adrian Caspersz wrote:
It\'s not difficult to make a programmer, running out of a parallel port
of an old PC. Or using an SBC such as a Raspberry-Pi.
Or, you could just buy the right tools to do it correctly.
https://www.ebay.com/itm/133033993647
For $60.23
That\'s the one I\'ve been using recently. Works well.
 
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