Acer B273H - Backlight issues

[JPK]

Hi all, I've got some issues with an ASUS B273H monitor. It has been a handy bit of kit for a number of years, but recently flickered a bit, then started shutting off after a few seconds.

I recapped all the power and inverter sections of the board, then noticed that a SMD diode had gone missing during the journey. ASUS tech support was zero help, the IC datasheet ( ) wasnt alot of help as it didn't have the single diodes from each backlight plug like my monitor, then I found another (attached "BL inverter.jpg") that has the same IC and appears to have the single diodes feeding each of the four plugs. I brought some, soldered one on, despite it being somewhat smaller than the original diode. Once fired up it seems to last slightly longer before blacking out, lights up, flickers a few times slowly, (image is still there, just no downlights).

Some questions:

* Does anyone have a schematic for this unit?
* Have I missed the mark on the replaced diode, is it causing an issue?
* any other suggestions welcome ...

Model: Acer B273H
Version: Acer B273H bmzidh
Part No. ET.HB3HA.005
Manufactured: Apr 2010

Thanks in advance

[budm]

Re: Acer B273H - Backlight issues

Can we see the good clear pictures of your board?
Did someone work on your board before you?
The circuit on your board may not use the same setup as your board.
Did you use test lamps top verify if the board is good or bad?
https://www.badcaps.net/forum/showth...er+testing+cfl