As I don't know how make jumper (I believe to ground), without jumper but with flat panel connected I have more voltages low, in particular on coil 8.6V I have 7V starting till decreasing under 5V, also as the CPU gets hotter and hotter all the voltages drop.

Hi Lotas and thanks for valuable information.
I checked points on my board with power connector and power button connector connected only and missing 12.7V on L400 (in my case resistance is 50K), also missing all voltages relative on coils around IC400.
I would like to send you image of my board with all voltages point but I can't find application to create it, what application do you use?
Regards,
Fabio

Hi at all and thanks for suggest!
I checked every lines relative to LVDS, HDMI, LAN and USB signals and nothing is shorted.
I remember that CPU is hot in standby with power cord connected only.

Lotas thanks you so much for info!
Unfortunately without result
When power cord is connected power led is on but cpu is immediately hot with buzzing and it's strange in stand-by mode, when press back power button power led blink two times then go off and cpu continue to be hot.
I checked everything and no short present, only coil L406_UT get short, maybe it's normal GND connected and unfortunately i can't find schematic or datasheet about IC400_UT (VPM1R0A) to check it.
I tried to reflow cpu without result, I would like to reball it but i don't have stencil at moment....

Hi dear SDNarcia and thanks for your replay!
I have RT809H and TL866 programmer, so how I can fix about status register (0x88, 0x42)?
Regards,
Fab

Hi, I have the board BN41-02568A on Samsung UE40MU6105KXXC.
Retro LED is working if power on Main Board is disconnected.
When Main Board si connected red power led is on, if I switch press power on remote control it's blinking then off (I think it's normal operating mode) but without any image on screen.
All voltages are present, 12V, 5V, 3.3V, 1.8V, 0.8V, ecc.
CPU is hot in power on and stand-by, so it's strange in stand-by.
I tried to program IC1604 with dump found here, red power led is always off, CPU is hot same but not wotking.
Please find attached my...