Re: Dell 2007FPB teardown

After re-trying, it appeared that those strange problems were induce because I applied ground on the screw hole. When applying GND on the pin header (pins 5-6 from left) they disapeared.

Then I could see the problem : only 5V was working, 3.3V and 12V are off.

In the end I found the problem it was 3 SMD resistors that were out of specs (153, 010 and 473) in the row of SMD under the white dielectric blob. Just upside the right PWM IC on my picture.
I found out comparing the resistances values read with ohm-meter between the...

Re: Dell 2007FPB teardown

Hello,

I have one of these LCD and it does not turn on.

Reading through those pages I tried to find the error, but no luck so far.

I looked for exploded caps on all boards but nothing obvious. Then I focused on the USB board as all errors on this topic seems to come from there.

I tested the resistors under the white bulb, but none is deffective. 3A fuse is not blown. Zener I am not sure how to test them. When I use diode on my multimeter I read 0.160 and all paralleles pairs of diodes read the...