Original RTU6549-MAIN-V2 RCA Main Board, CV3458H-A, 7.T3458HA1000.0008

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • tech9pc
    Member
    • Sep 2021
    • 49
    • Canada

    #1

    Original RTU6549-MAIN-V2 RCA Main Board, CV3458H-A, 7.T3458HA1000.0008

    Hi does anyone have firmware for RTU6549-MAIN-V2 RCA Main Board, CV3458H-A, 7.T3458HA1000.0008. It is not available nowhere on the internet.
    I got a Version 1 CV3458H-A, 7.T3458HA1000.0003 off ebay for 30.00 and popped it in and board works but about every 20 or 30 minutes tv loses input signal and have to flip HDMI source than back to get picture up again. Probably from not being the same board as original which had lost its HDMI ports signals. I baked the board in oven but have not tried to put back in yet.
    Is there a way I could dump the original mainboard 7.T3458HA1000.0008 image to a usb stick and try flashing it onto the 7.T3458HA1000.0003 mainboard I have in the tv now?

    Original Board BD_CV3458H_A_10
    Firmware: 7.T3458HA1000.0008
    C/N: SU-CU-20180601
    Panel LC650RU1A

    Here is link to shopjimmy original board that I am hoping can flash onto the one I got off ebay that has an older 7.T3458HA1000.0003 firmware image on it

    https://www.shopjimmy.com/rca-main-b...on-2-see-note/
    Last edited by tech9pc; 10-26-2021, 04:59 PM.

Related Topics

Collapse

  • Dani_2024
    Sceptre U550CV-UMR 4K LED, Bad Caps on Main Power Board?
    by Dani_2024
    Hi and thanks in advance for any input you might provide!
    I have a Sceptre U550CV-UMRD8POTV83BB 4K LED (this is a dumb tv) that I bought new in August 2021, so It's just completed 3 years.
    Main power board model: TP.MS3683.PC821 T-Con board: N4TP546UHDPU2L_BO

    Last Sunday I was watching a dvd and fell asleep for about half hour, when I awoke the tv screen was black and couldn't get the dvd menu to show, so I changed the input to antenna and had sound but no picture, turned it off. I then got online and found this great site! ....read many troubleshooting tips and this...
    10-28-2024, 05:06 PM
  • ygorsan
    LG 55NANO77SRA TV – Menu scrolling by itself even after removing button board (Main Board EBU66792103)
    by ygorsan
    Hi everyone,




    I’m looking for help with a persistent issue on an LG TV model 55NANO77SRA, which uses the main board EBU66792103 (also used in LG UQ80 and NANO75/NANO80 series).







    🧩 Problem Summary:
    • The TV keeps scrolling through the menu or selecting items by itself.
    • I removed the physical button board (the entire panel with power and volume buttons) and also disconnected the flat cable (CN202) from the main board.
    • The remote control is not in use (batteries removed), and the TV still shows the same behavior.
    • I
    ...
    07-28-2025, 08:34 AM
  • jb_Bak
    Sony xbr-65x900c main board issues?
    by jb_Bak
    Hey guys great forum glad to have found it. I bought a Sony XBR 65X900C cheaply because it didn't work. No signs of life at all not even a light/led. All I hear is a brief high voltage sound when I throw the power to it.

    Didn't see any obvious signs of damage so right away started checking voltages. This is what I see:
    Power Board Connector that goes to Main board
    CN6401
    Pin 01 NC
    Pin 02 NC
    Pin 03 "BL_ON": 0V
    Pin 04 "N/C"
    Pin 05 "STBY 3.3V": 3.5V
    Pin 06 "GND": N/C
    Pin 07 "AC_OFF"...
    09-27-2021, 04:52 PM
  • JDC
    (SOLVED) - ONN 100012588 No Power, Then Rebooting After Main Board Change
    by JDC
    ONN 100012588
    Issue: No Power, Then Rebooting After Main Board Change

    Short answer: replace main board and power board
    Technical answer: replace main board and Q306 & Q307 on power board.

    Long answer:

    TV wouldn't turn on. Power switch was fine which means the main board isn't processing the power on signal. Replaced main board. TV turns on now but randomly reboots. Bad main board? EEPROM? Tried to pull main board and got a shock touching the corner of the board. That's weird. C334 (450V 10uf) capacitor is still holding a high charge....
    07-15-2022, 07:39 AM
  • advant
    Driving a Sharp TCON/panel with a universal main board
    by advant
    This thread is about trying to get an Universal Main Board to work with a Sharp TCON and panel.

    I have a Sharp LC-46D85UN TV that has had a main board issue. Since this model is from 2009, I am not able to find an exact replacement of the main board. Instead, I decided to see if I can future proof this tv by getting a Universal Main Board (T53U21.2) from China to work with the Sharp TCON (CPWBX4291TPZA) and panel. The universal main board supports a 8 bit dual channel LVDS interface whereas the TCON requires a 10 bit dual channel LVDS input. I have modded the LVDS connector to match...
    02-03-2020, 12:25 AM
  • Loading...
  • No more items.
Working...