Re: Dell E177FPb - White Screen

Folks, I am delighted to report that with the scounged up ceramic caps and a new SMD fuse (3A) on the T-CON board, the monitor is back up and running. Thanks for all your help! I think I am hooked and am actively looking for "broken" monitors to fix :-) .

Re: Dell E177FPb - White Screen

Totally understand about the fuses. I am awaiting the parts and will report back when installed. The catch with this particular T-con is that the populated side of the board flips down against the back of the lcd panel. So there is not much space to insert any larger scale components and still fold down the board and reassemble. The fuse in particular is just below the connector to the other board and really leaves no wiggle room.

Parts should be here in a couple of days...

Re: Dell E177FPb - White Screen

Cool idea using an electrolytic cap. Should have checked in here first before scrounging around and pulling a similarly sized ceramic cap off an old ethernet card and plugging it in because I saw that approach suggested in some other thread here when I was browsing some time back. I guess there is no telling if the substitute is rated for 25V or not. Unfortunately, I don't have a way to measure capacitance, so getting another similar one off the board is not going to help.
Still stuck on the fuse, though. Trying to decide if I should order replacements...

Re: Dell E177FPb - White Screen

Quick update: Found the shorted ceramic cap (C24) some time back, but I don't have any replacements. Trying to get some so I can replace cap and the fuse on the board and try it. The wait is killing me :-(

Re: Dell E177FPb - White Screen

Thanks for the advice. It is really 1 ohm on the DMM set to measure resistance. Strange thing is that it starts off shorted and builds up to 1 ohm, which might suggest that a "shorted" cap is getting charged but pretty poorly. I was checking all the caps and as you said, a whole lot of them are showing as shorted, no doubt because they are all in parallel.

I'll go through these steps and report back what I find. Thanks again!

Re: Dell E177FPb - White Screen

I am a newbie at fixing monitors, but have been reading a number of threads with great interest. Very impressed with the knowledge and expertise of the poster and even more so with everyone's willingness to share. This particular thread was especially interesting as my Dell w2207 monitor is also showing the White Screen issue and I was hoping to follow this thread and momaka's expert diagnosis to conclusion, but unfortunately tom66 took a shortcut

I did measure the resistance from AVDD1 to ground on my t_con and it is just 1 ohm....