Question about BenQ T701 TFT 17" LCD Monitor
Suddenly my monitor is gone black but the power indicator is on. What could be the problem?
I had a similar problem: the backlight on my Benq T701 only functioned for a couple of seconds every time a turned the monitor on and then the backlight switched off (sometimes in two stages). An electronics guru at work said with those symptoms the transistors rarely were the problem and I just needed to resolder the connections of the high voltage coils onto the PCB. On visual inspection those solder connections seemed ok, but when I tried to reflow the existing solder at one connection I spotted the problem: just a thin surface layer of solder was present and I had to add solder to fix the problem. The 4 coils each have 6 leads on one side and 2 on the other. I only soldered the connections on the side with 2 leads. In just 30 minutes and without buying parts the monitor is now up and running again.
Posted on Jan 22, 2009
The LCD backlight inverter board needs to be replaced. For this brand monitor, it's pretty hard to find. Good Luck to you.
Posted on Jun 24, 2007
Swaped 2 shorted 2SC5707 and resolderd some dry joints
Now working perfectley
Posted on Jan 17, 2009
this one i guess, going to buy at local electronics store tomorrow..
have same problem, and i have 2 of them...
Posted on Dec 12, 2007
2SC5707 x4 (lamp driver transistor)....
Posted on Oct 26, 2007
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