TV has one combo board (VTT55UH160). Symptoms are like this.
When part of the screen is disconnected (white part), it looks like this
Resistance and voltages (I don't know if they are good or not). The inductor with 0ohm/0V seems to be connected to GND.
I haven't noticed any shorts on rails listed below:
VGH - 30V
VGL- -9V
VAA - 14V
VCOM - 5.6V
STV - 11.95V
LC1, LC2 - +30/-12V
All CKV lines (no shorts between them) looks the same:
I've tried to cover some lines with tape, but the only result was no picture at all (no lines), backlight only. Is LCD panel gone?
There is this DC-DC converter
, but I haven't found any shorts around it. Also I couldn't find any datasheet.
When part of the screen is disconnected (white part), it looks like this
Resistance and voltages (I don't know if they are good or not). The inductor with 0ohm/0V seems to be connected to GND.
I haven't noticed any shorts on rails listed below:
VGH - 30V
VGL- -9V
VAA - 14V
VCOM - 5.6V
STV - 11.95V
LC1, LC2 - +30/-12V
All CKV lines (no shorts between them) looks the same:
I've tried to cover some lines with tape, but the only result was no picture at all (no lines), backlight only. Is LCD panel gone?
There is this DC-DC converter
Attached Files