Vizio E420VA mainboard replacement

[freakaftr8]

Hey all,
well here is the situation, got a Vizio 42" EV420VA from a friend that had a power surge destroy the mainboard. Couldny locate one but did find one on ebay for a 46" model.

Basically set powers up now but the screen is stretched and green, lacking color.
How do you preset option bytes in the service menu? and furthermore how do you access the service menu on Vizio?

I had all this info saved on my phone but recently smashed it on accident.

Thanks

[stj]

Re: Vizio E420VA mainboard replacement

a wise member once posted:

Vizio Service Menu Method 1
1. Turn The TV off.
2. Press and hold the {CH +} & {CH -} buttons on the TV.
3. Then press and release the {POWER} button on the TV.
4. Release the {CH +} & {CH -} buttons.
5. Now press the {MENU} button on the remote.
6. You should get your regular menu up, but with a "F" in the bottom right corner of the menu (This is for factory).
7. Press and hold the {MENU} button for few seconds.
8. The Service Menu will be displayed.

Vizio Service Menu Method 2
1. Turn The TV off.
2. Press and hold the {CH +} & {CH -} buttons on the TV.
3. Then press and hold the {POWER} button on the TV.
4. Keep all three buttons pressed for few seconds.
5. Now press the {MENU} button on the remote.
6. You should get your regular menu up, but with a "F" in the bottom right corner of the menu (This is for factory).
7. Press and hold the {MENU} button for few seconds.
8. The Service Menu will be displayed.

Vizio Service Menu Method 3
1. Press and hold the {EXIT} button on the remote for 3 seconds then release it.
2. Then press the {1} {2} {3} buttons on the remote.
3. To exit, press the {EXIT} button.

dont blame me if it's wrong, i just did a "cut n paste"

[freakaftr8]

Re: Vizio E420VA mainboard replacement

awesome thanks! Ill give it a try in a few minutes

[freakaftr8]

Re: Vizio E420VA mainboard replacement

None of these options work.

[stj]

Re: Vizio E420VA mainboard replacement

who actually makes it inside?

[freakaftr8]

Re: Vizio E420VA mainboard replacement

Have no idea. No names anywhere

[stj]

Re: Vizio E420VA mainboard replacement

maybe try these?

GV42L FHDTV10A / JV50 / SV42 / SV320XVT / SV370XVT / SV420M / SV470M / SV420XVT1A / SV470XVT1A /
VECO320L1A / VO22L / VO32 / VO37 / VO47L / VOJ320 / VOJ370 / VP322 / VP42 HDTV20A / VP422 / VS420LF1A /
VU42 / VW32 / VW37 / VW42 / VX20 / VX32 / VX37 HDTV10A /VX42

Push "Menu" on remote and then push "Vol-" and "Input" on keypad

GV46 / P50HDM / P50HDTV10A

Press "Ch-" and "Ch+" buttons together once on keypad

GV42 / L42 / VP42HDTV10A / VP50 / VX37

Press and release "Menu" on keypad. Hold "Ch-" and "Ch+" buttons on keypad, then hold "Menu" on remote.

P42

Hold "Ch+" and "Ch-" along with "Power" on keypad. OSD will show "F" on right bottom portion of OSD.

VM60P

Press "Info" on remote, then press "Right Arrow," "Down Arrow," "Left Arrow," "Up Arrow," "Right Arrow."
The TV will show "Enter Factory Mode." Press "Menu" after message disappears and go do to "Setup."

GV47

Press "Menu" then press the following combination: "Info," "8," "2," "0," "6."

SV420M / SV470M / VF550M / VF550XVT1A / VF551XVT / VL260M / VL320M / VL420M / VL470M / VO320E /
VO320EP8 / VO370M / VO420E / VP504 / VP505

Press "Menu," and then press "2," "4," "8," "9."

SV420M / SV470M / VF550M / VF550XVT1A / VF551XVT / VL260M / VL320M / VL420M / VL470M / VO320E /
VO320EP8 / VO370M / VO420E / VP504 / VP505

Press "Menu," and then press "2," "4," "8," "9."

VA19 / VA22LF / VA220E / VA26

Press "Menu" and then press the following combination: "0," "6," "2," "5," "9," "6"

VA320E / VA320M / VA370M / VT420M / VT470M

Press "Menu" and then press the following combination: "1," "9," "9," "1"

VW22 / VS370E

Press "Mute" once OR "-" twice (the dash next to the "0") and then press the following combination: "9," "8," "7," "6"

[freakaftr8]

Re: Vizio E420VA mainboard replacement

None of those work either. This things stubborn

[stj]

Re: Vizio E420VA mainboard replacement

vestel?
Menu 4725

aaannd

Chinese generic boards and most respond to the following for factory mode:

Hold down volume minus (Volume down) on set and press 'recall' on remote.
'Recall' is the button that activates the channel number and clock onscreen.
After you have made your changes, in most cases, pressing 'power' on the remote will clear the factory mode.

On some models pressing the 'AV' button will revert things to normal operation.
In rare cases, the sequence first described above - (Vol - on set and recall on remote) will have to be repeated at least once more.

[freakaftr8]

Re: Vizio E420VA mainboard replacement

None of these are working. And I cannot find any info online

[freakaftr8]

Re: Vizio E420VA mainboard replacement

However I noticed that the mainboard has a USB. It has a media player for pics and stuff but can't locate a firmware from Vizio or the internet. Wish I could just transfer the EEPROM ic from old board to new. But not sure which ic holds the firmware

[freakaftr8]

Re: Vizio E420VA mainboard replacement

Doesn't the8 pin EEPROM retain the firmware?

[aaronwt6]

Re: Vizio E420VA mainboard replacement

Post a picture of the board please. I'm not sure if the eeprom swap is going to fix it though. I've had mixed results swapping these boards in Vizio's. They use so many different panels it's hard to keep up.

[aaronwt6]

Re: Vizio E420VA mainboard replacement

If this is the board you have, I've circled the Eeprom

[tibimakai]

Re: Vizio E420VA mainboard replacement

http://www.shopjimmy.com/vizio-e420v...eprom-only.htm

[freakaftr8]

Re: Vizio E420VA mainboard replacement

Yep that's the board. Too bad I can't get into the service menu and poke around in the options kind of like Samsung and thier panel options although I doubt it will do any good.

[freakaftr8]

Re: Vizio E420VA mainboard replacement

Well ordered the EEPROM. Let's hope for the best.

[freakaftr8]

Re: Vizio E420VA mainboard replacement

Well I thought I'd try the eeprom from my old e420va mainboard. It presented no control. Couldn't turn it on. Power supply was sending voltages. Got the new eeprom in from shop jimmy and still dead. Checked all fuses. Good. Any ideas?

[freakaftr8]

Re: Vizio E420VA mainboard replacement

I'm still stumped on this one. I'll run down the symptoms again.
got this from somebody that said they had a power problem in Their house. I replaced the main board with 1 for a 47 inch vizio and even though it now powered up the screen was all distorted and sTreched. obviously the 47 inch panel in the 42 inch panel are not compatible. So I soldered The EEPROM in from the original 42 inch version mainboard and then all the sudden I have a no power situation no standby light and the TV would not power on so I figured it was a bad EEPROM. So I ordered a new one. Still have the same issue. Getting power from the supply and all fuses on mainboard are ok. Any ideas?

[tibimakai]

Re: Vizio E420VA mainboard replacement

All the voltages at the PS are good?