Maybe apparently simply illumination (one from lamps is broken)is not present.
-Voltage on the inverter comes 24в. On contact ERROR-OUT 0v, On contact EX-DIM 1.8 V, On contact DIM 3,5V On contact ENA 0V
- 1) Disconnect from MainBoard all sockets going from SMPS;
2) Close on SMPS contacts:
a) 24V-> B/L On/Off;
b) Pwr On/Off-> Stdby through the resistor 2kohm
On B/L On/Off submit pressure Stdby (5V), NOT instead of 24V.
On Pwr On/Off it is possible to submit simply pressure Stdby without the resistor.
Signal ENABLE (ENA), resolves inverter work, only after installation of modes of the skaler-transmitter and the skaler-receiver. It is similar to signal POWER Vs in PDP. If it is hardware it is connected - active 1.
To begin with check up LVDS, it is attentive - CLK.
The inverter joins command B/L ON that means BACKLIGHT ON (to include illumination)
ENABLE (it is accessible, openly, is included) - this means that illumination is included, when lamps is on , there level 1 when are extinguished - 0
In Samsung LE32S81B was problem with (if led blinks 3x)
unpluged the inverter from montage and led blinking the same (3 times), I check inverter measurement at cold and its ok. No diference at inverter beetwen transformers, I check 24v to input and stab 12v, its ok.
Dodano po 14 [minuty]:
I check, lcd its in st-by protection, inverter its not comand from mainboard, but i check more!
Keep searching ...
Thanks Lisek and Pol Uk!