I have this 17" IBM LCD monitor with these symptoms; The power switch works fine, when depressed, it goes into Yellow, I can press it again and turns off.
I do not get any display at all, with the cable disconnected from the video card, I should get the " Check cable" screen appearing.
I would think that if it were only the "Backlight" or the inverter module, I could shine a flashlight through the screen and I would be able to see my display but it does not work.
I suspect that somewhere, there is self test portion shutting down so it never gets to display anything on the screen.
Has anyone troubleshut one of these units before?
What is a proper troubleshooting procedure? Are all LCD screen, basically working the same way or some of them have got protection circuitry making it harder to actually troubleshoot?
I have checked all electrolytic capacitors, some 100uf 16Vdc and one 10uf
10Vdc is reading a bit resistive but not totally out of wack, reading 12 versus 8 on my Dick Smith ESR meter.
I do not see any voltage coming out of the inverter, I could have jumped to the conclusion that it is the defective module but then there could be a circuitry shutting it down if something else has not come up on time or something like that. I wish I had another unit exactly the same to troubleshoot to the board level.
Any idea?
Any help appreciated