Hi all!
I'm trying repair monitor. Dell U3011.
Have some expirience with electronics.
Describe problem:
- this start year ago, not in all power on cases backlight start working, fix with some switches power buttton (1-3 times)
- month ago, backlight was go off, in 2-10 minutes after run, after this cycles (pwr on <-> timeout <-> backlight off ) set stable mode and can work weeks without power off.
- now it can't backlight on 20-30 power cycles, but on next day can be runned in one time and good working before power off, it's totaly random case
- all others systems works good, self check ok, pc find device and data from DVI, enabling test modes (1-4 btns)
- start from wait mode, also randomly, and can work to pwr off
Now mon have removed decor panels, and metallic shields from mainboard, pwr source, and invertor.
What can i do now for tasks sequnce of search problem?
I'm trying repair monitor. Dell U3011.
Have some expirience with electronics.
Describe problem:
- this start year ago, not in all power on cases backlight start working, fix with some switches power buttton (1-3 times)
- month ago, backlight was go off, in 2-10 minutes after run, after this cycles (pwr on <-> timeout <-> backlight off ) set stable mode and can work weeks without power off.
- now it can't backlight on 20-30 power cycles, but on next day can be runned in one time and good working before power off, it's totaly random case
- all others systems works good, self check ok, pc find device and data from DVI, enabling test modes (1-4 btns)
- start from wait mode, also randomly, and can work to pwr off
Now mon have removed decor panels, and metallic shields from mainboard, pwr source, and invertor.
What can i do now for tasks sequnce of search problem?
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