DYNEX DX-LCD32-09 Screen goes black

[pangga]

I have a dynex dx-lcd32-09 with red LED on when plugged in & before powering up. As soon i power up LED becomes green then after a while screen will flash white then black.Green LED stays on. From measuring the voltages in the three PS connectors noticed PWM goes from 0 to 3.2v then 0 then 3.2v. All other voltages seem to be what the label is.
Any ideas please, Thanks.

[budm]

Re: DYNEX DX-LCD32-09 Screen goes black

Please use go advanced to up load good clear pictures of the boards and the connectors so we can see the voltage labellings. PWM is AC signal around 100~200 Hz with variable pulse width. What do you have for BL_ON (or ON/OFF, or Inv_ON/OFF).

[pangga]

Re: DYNEX DX-LCD32-09 Screen goes black

hi budm,
I'll post the pictures and voltage readings later today when i get home.
I didn't see a BL_ON. Is it on the PS board?
thanks

[pangga]

Re: DYNEX DX-LCD32-09 Screen goes black

hi budm,
Attached are the pictures of the main board and power supply.
Here are my voltage readings:

X508
- - -- off - on
PON - 0 - 2.5v
5v - 5.2v - 5.2v
16v - 0 - 15.3v
5v - 0 - 5.1v
9v - 0 - 9v
32v - 32.5v - 32.5v

X505

PON - 0 - 5.2v
PWM - 0 - 0-3.4-0-3.4v
24v - 0 - 23.5v

X503

PON - 0 - 5.2v
PWM - 0 - 0-3.3-0-3.3v
24v - 0 - 23.4v