LG 55LV5500 TV - Has power No backlight No Sound No picture

[TubeJunkie]

I picked up this TV from the recycle center . LG 55LV5500-UA. When powered on, the power indicator goes from red to white. It has no backlights and no sound. I tried doing the flashlight test and didn't see anything. I took some voltage readings with power on. Mere set to DC volts, negative lead on Metal tv chassis. See pic:

P201(supplies tuner/input board) pins aren't label, so from top to bottom:
Pin 1- 0 vdc
Pin 2. 12.02 vdc
Pin 3. 12.02 vdc
Pin 4. 12.02
Pin 5. 0
Pin 6. 0
Pin 7. 3.5 vdc
Pin 8 3.5
Pin 9. 0
Pin 10. 0
Pin 11. 24.8 vdc
Pin 12. 3.4 vdc

[budm]

Re: LG 55LV5500 TV - Has power No backlight No Sound No picture

Please do not duplicate the request for help, you already has the thread for this one.
https://www.badcaps.net/forum/showthread.php?t=74124

[aaronwt6]

Re: LG 55LV5500 TV - Has power No backlight No Sound No picture

Based on my experience with these and other models that utilize the same basic main board, I'd say you almost certainly have bad connections on the main processor due to failed solder on that BGA chip. It's extremely common with this model and results in no HDMI, freezing up on the splash screen, or turning on with no backlights as you are experiencing. It can often be remedied by a reflow of the main board temporarily but the only real fix is to re-ball the processor.