Spork
Member level 3
Hello, I'm not sure if this is the correct section, but it seemed the most relevant.
I've got an LCD monitor that turns on and displays a picture very nicely, for about 3 seconds before the backlight turns off. Now, since I get a nice display, I can assume that the actual light bulb (cold cathode) is working fine and the inverter board is the part that is failing.
Now I know it is cheap to replace the whole board, or the whole monitor in this case, but I am looking to understand what part(s) would be failing. I want to say it is a capacitor issue, but I've got several capacitors on the board and none are bulging, I was wondering what I should do to test or what other parts I should suspect. (I've got a rework station and multimeters, but no o-scope yet, so my testing may be limited)
Any help would be appreciated,
Spork
I've got an LCD monitor that turns on and displays a picture very nicely, for about 3 seconds before the backlight turns off. Now, since I get a nice display, I can assume that the actual light bulb (cold cathode) is working fine and the inverter board is the part that is failing.
Now I know it is cheap to replace the whole board, or the whole monitor in this case, but I am looking to understand what part(s) would be failing. I want to say it is a capacitor issue, but I've got several capacitors on the board and none are bulging, I was wondering what I should do to test or what other parts I should suspect. (I've got a rework station and multimeters, but no o-scope yet, so my testing may be limited)
Any help would be appreciated,
Spork