Hello.
My first post here.
I apologize for the typos because English is not my native and I haven't learned English in my school years. I have tried to learn it myself but probably I still make many of mistakes because reading written language and trying to communicate are two different things..OK, hope that these mistakes are forgiven
My concern is as follows:
I need help finding a service manual for Thomson 55UA7706 tv. Or - which may be the cause when the TV is in standby mode and the screen stays blank when you try to turn it on (even no backlight flash), I`ll connect new strips but I cant get 56V from BL inverter, there is two chips OZ9998HEGN in this inverter, they seems fine. Inverter board can get from the main power supply as follow voltages:
+24V (I have there +22.66V)
+56V (I have 0 (zero)V)
there is also
3D_EN pin (i think some logic pin?)
P_DIM (dimming I quess?)
PT (I dont know what it is?)
BL_ON I have there +3.06V (backlight ON? logic signal?)
Backlight driver module is: 40-RA6080-DRA2LG
Power supply board is: 81-PE461ED-PL200AA
Motherboard is: 40-NT67HC-MAD4HG
T-CON/ Logic is: ST4851D01-4-C-2
LCD panel is: LVU550SE4L 55E6700-LPE002A
Where else should I look or measure?
Thanks!
My first post here.
I apologize for the typos because English is not my native and I haven't learned English in my school years. I have tried to learn it myself but probably I still make many of mistakes because reading written language and trying to communicate are two different things..OK, hope that these mistakes are forgiven
My concern is as follows:
I need help finding a service manual for Thomson 55UA7706 tv. Or - which may be the cause when the TV is in standby mode and the screen stays blank when you try to turn it on (even no backlight flash), I`ll connect new strips but I cant get 56V from BL inverter, there is two chips OZ9998HEGN in this inverter, they seems fine. Inverter board can get from the main power supply as follow voltages:
+24V (I have there +22.66V)
+56V (I have 0 (zero)V)
there is also
3D_EN pin (i think some logic pin?)
P_DIM (dimming I quess?)
PT (I dont know what it is?)
BL_ON I have there +3.06V (backlight ON? logic signal?)
Backlight driver module is: 40-RA6080-DRA2LG
Power supply board is: 81-PE461ED-PL200AA
Motherboard is: 40-NT67HC-MAD4HG
T-CON/ Logic is: ST4851D01-4-C-2
LCD panel is: LVU550SE4L 55E6700-LPE002A
Where else should I look or measure?
Thanks!
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