Dell 2005FPW works for hours, but on hot re-boot fails...

[tasin]

Re: Dell 2005FPW works for hours, but on hot re-boot fails...

with necked eyes, I have no esr meter, they looks healthy no leaks or color disorders, or blowing .

[technotech]

Re: Dell 2005FPW works for hours, but on hot re-boot fails...

Mine looked healthy, but were bad. You might want to just replace them anyways -- it shouldn't cost much

[tasin]

Re: Dell 2005FPW works for hours, but on hot re-boot fails...

I think it is the best solution in this case.
Thank you very much for replay.

[CQTip]

Re: Dell 2005FPW works for hours, but on hot re-boot fails...

There are two caps circled in blue. One of them provides stable power for the SMPS controller at startup, the other while it is operating. NOW, this is somewhat of a long shot, but if either of them is bad, the power supply won't come up.

There are two approaches. One is to replace these caps and see if that fixes the problem.

The other is to check if the power supply comes up. If you look at the bottom of the board you will see that the pins for the connector to the logic board has the function of each pin labeled. With the monitor in 'won't restart' condition, check the voltages from the 12V and 5V pins to Gnd. If these are the same in both working and won't work states, the problem is on the logic card, which is a much more difficult matter.

PlainBill

I picked up the Dell 2005FPW monitor at a computer show for $45. It worked for about a day or so. I found it blinking all of its front panel indicators. None of the front panel buttons, even the power button, would work. Would have to unplug to restore operations which would only last a few minutes and then the same symptoms would appear.

Online search quickly lead me to the following posting and videos on fixing known issues with this monitor due to the bad capacitors:

Dell 2005FPW works for hours, but on hot re-boot fails... - Badcaps Forums
https://www.badcaps.net/forum/showthread.php?t=8998

Repair a Flickering 20" Dell 2005FPW LCD Monitor (similar to 2007WFP) - YouTube
http://www.youtube.com/watch?v=Oh-7-6Yb0Oc

WLDock's media
http://media.photobucket.com/user/WL...g.html?filters[term]=2005fpw&filters[primary]=images&filters[secondary]=videos&sort=1&o=0

I only replaced the following caps on the power board to confirm that they were the problem; and YES indeed, it fixed it:

C103 - 47uf 25V
C107 - 1uf 50V

THANKS for this site and all that shared.
CQTip

[matt526]

Re: Dell 2005FPW works for hours, but on hot re-boot fails...

I am going to replace the c635 and c637 470uf 16v
but all I have laying around is a 470uf 35v. you think this would be fine for now?
I have seen people put a 470uf 25v just fine.

[budm]

Re: Dell 2005FPW works for hours, but on hot re-boot fails...

That will be fine for testing but, is it low ESR type or general purpose type.