Hello, a friend sends me this LG TV that has been thunderstrike. When plugged in TV show red light and on the power press button TV show a blue LED. I have 3.3V and 20V lines coming to the main board but no picture on the TV.
I found that one Zenner diode was shorted (i tested all other diodes) but when pulled out from the board it turn out just fine (no short). Next to the diode is a resistor that shows 0 Ohm but i do not know what value should be that resistor.
Can you please help me to determine the value of the resistor?
Also, I notice that a few Schottky barrier rectifiers (W2206) have shorted pins 1 and 3. (TO220 package). When taken out the board they are ok, no short.
Do you have any clue where should I start? besides that resistor :-)
I found that one Zenner diode was shorted (i tested all other diodes) but when pulled out from the board it turn out just fine (no short). Next to the diode is a resistor that shows 0 Ohm but i do not know what value should be that resistor.
Can you please help me to determine the value of the resistor?
Also, I notice that a few Schottky barrier rectifiers (W2206) have shorted pins 1 and 3. (TO220 package). When taken out the board they are ok, no short.
Do you have any clue where should I start? besides that resistor :-)
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