Dell Monitor E177FPb Horizontal Lines

[oreo1]

After repairing three monitors for friends, and one of my own, the neighborhood has anointed me as the monitor repair guy, thanks to my secret weapon..... this site and everyone who has helped me. I don't do this for a living, but I have had some success until now!

The Dell monitor E177FPb, that I have now, is giving me fits because I can't find an obvious solution for the horizontal lines that are showing up across the screen. I have checked for bad caps, cold solder joints, but I haven't started to test components on the board yet.

I have included a photo of the problem on the screen. I have also included pictures of the front and back of both boards that are attached together. If someone has encountered this problem with a Dell monitor, please let me know where I should start to get rid of these lines. As always, thanks in advance for any help that you might be able to supply.

[oreo1]

Re: Dell Monitor E177FPb Horizontal Lines

Just checking back.....but does anyone have any ideas?

[Krankshaft]

Re: Dell Monitor E177FPb Horizontal Lines

Either bad main video board (bad solder joint or bad component), LCD daughter board, or a problem with the bonded ribbon cable from the actual LCD panel to the daughter board.

The video board can be swapped and tried out if found if one of the other two is the problem a new panel would be needed and the display is toast.

[Krankshaft]

Re: Dell Monitor E177FPb Horizontal Lines

The only other thing is to check the secondary caps the main board may do all kinds of weird things if the ripple is up from bad caps.

[George Ortiz]

Re: Dell Monitor E177FPb Horizontal Lines

Looks like a problem with a video card. I had similar problem with my old
ATI Radeon X800XL pci-e 256Mb video card. Could also be problem with onboard video for the motherboard.

[oreo1]

Re: Dell Monitor E177FPb Horizontal Lines

Guys,
Thanks for the replies. I'll look at all you possibilities you both mentioned and report back. Thanks again!!

[Krankshaft]

Re: Dell Monitor E177FPb Horizontal Lines

Usually video card problems manifest themselves as lines on the bootup screen.

These issues usually arise from either damaged or overheated video memory.

Besides if he got this from his neighbor with these symptoms and the lines are appearing on his test computer the odds of a bad video card on both comps is rare.

If you can't find bad joints on the main video board or LCD panel daughterboard the panel is junked. Many times lines on the screen arise from a bad joint or IC failure on the daughterboard which is under a metal cover on the rear of the panel.