Re: Backlight problem on viewSonic VP171b

ok. Thanks a lot for your reply. I will check the transistors and the adhesive on the torroids. Then if the inverter always fails, I will replace both the Hermei caps.

Thanks again!

sebastien

Hello all,

I've got a LCD from ViewSonic. The model is VP171b. It shows the right image for 1 second when I turn it on and then goes black. Powering it off and on again makes the same.

If I direct a flash light on it, I can see what I should see. It's very dark though. From what I've read, it seems to be an inverter problem, am I wrong ?

and reading the posts, it seems that this is usually related to a dead caps.
The caps of my LCD are (according to another post in badcaps)
PSU:
Li-Shin AREX 94V-0
2 Panasonic 16V 1000uF 105oC...