Weird color switching- Dell e171fp

[Raji]

I've got an older dell 17" monitor that will sometimes change its color. its running in 1280x1024@60hz. I am fairly sure its not the video card or vga cable because I have ran a samsung (710 mp) 17" on the same exact system earlier in the day.

sometimes it will switch back and forth rather quickly, sometimes the picture stays good and sometimes it look like its monochrome (of course now that I am trying to get a pic of it in "monochrome" its staying good, with a few teases). there seems to be no pattern in the color switching, i.e. it can be bad immediately after turn on or stay good after it has been on for hours. sometimes the screen will just flicker.

[Raji]

Re: Weird color switching- Dell e171fp

Here are the pics

[Wizard]

Re: Weird color switching- Dell e171fp

Looks like negative film look on that defanged image.

Well, good idea to open it up (this is Samsung 170n/171n series). Opening case is started by taking the stand off (4 screws at VESA mount) then front up, carefully get under the bezel edge where LCD is and pull up carefully to unsnap hook, work along long sides, till you can get top two corners freed up. Then rest comes easier on bottom, when now apart, don't lift out yet, you have ribbon cable for the buttons snaking over the metal frame to the controller board is in the way. Make sure there are no screws left on back.

Then carefully flip over on bath towel, lift out the back case. Gently unplug all the stuff except the power switch. Carefully lift LCD/metal frame out of the front bezel carefully because of fragile ribbon cable. Put LCD still facing down on towel. Undo 4 screws to get frame free from the LCD. Lift part-way, Feel around the LVDS cable plug for 2 tan color glue, carefully work these glue off and unplug the connector. Now you can seperate both power supply and controller as a unit from metal frame.
And can see how the capacitors on the power supply are. (bloated or replace them).

Cheers, Wizard

[Raji]

Re: Weird color switching- Dell e171fp

I've replaced all the caps on the inverter, power supply, and I guess the logic board, I would send pics but my camera really sucks at fine detail

[EGuevarae]

Re: Weird color switching- Dell e171fp

I've got an older dell 17" monitor that will sometimes change its color. its running in 1280x1024@60hz. I am fairly sure its not the video card or vga cable because I have ran a samsung (710 mp) 17" on the same exact system earlier in the day.

sometimes it will switch back and forth rather quickly, sometimes the picture stays good and sometimes it look like its monochrome (of course now that I am trying to get a pic of it in "monochrome" its staying good, with a few teases). there seems to be no pattern in the color switching, i.e. it can be bad immediately after turn on or stay good after it has been on for hours. sometimes the screen will just flicker.

I have a 15" wide "I-don't-remember-what-brand" brand LCD that is permanently in "negative mode".

[Junk Parts]

Re: Weird color switching- Dell e171fp

I had a problem like that but I use and old Gateway VX900 CRT. The color would go from brite and clear to washed out and then back to normal again for no reason at all. At other times windows and the internet would be colored right but if I started to play back a DVD it would be shown in black and white. The snake in my wood pile turned out being a bad stick of RAM. After changing out that RAM its been perfect ever since.

[kc8adu]

Re: Weird color switching- Dell e171fp

I had a problem like that but I use and old Gateway VX900 CRT. The color would go from brite and clear to washed out and then back to normal again for no reason at all. At other times windows and the internet would be colored right but if I started to play back a DVD it would be shown in black and white. The snake in my wood pile turned out being a bad stick of RAM. After changing out that RAM its been perfect ever since.

shared video ram.
thats how i got a nice board with 4gb xms corsair and a fx60.
1 stick bad in the area the shared video uses.
posted with stripes and blinking garbage.corsair rma is great by the way.

[Junk Parts]

Re: Weird color switching- Dell e171fp

This is a good question for you Kc8adu. This mobo doesn't have onboard video at all. At the time of the color problem I was using a little 32meg AGP ATI card. How did the onboard ram failure screw up my video on the AGP card that has its own Ram? I'm now using the Nvidia Geforce FX5200. Its isn't the best card in the world but at least its 128 meg.

[ratdude747]

Re: Weird color switching- Dell e171fp

the geforce fx 5200 needs a batter heatsink. one with a fan. i bought this for mine. i had a REALLY nice one but the bracket smacks into a couple capscaps. when mine come in ill post how it fits/performs.

[Junk Parts]

Re: Weird color switching- Dell e171fp

Mine already has a nice fan and sink on it. My brother put it on there when he was using it.

[ratdude747]

Re: Weird color switching- Dell e171fp

good. mine burnt my finger. ouch.

[Junk Parts]

Re: Weird color switching- Dell e171fp

When I have something running hot enough to burn me I don't use it.

[EGuevarae]

Re: Weird color switching- Dell e171fp

good. mine burnt my finger. ouch.

I'm using one 24/7 at the side of a 8500GT with stock HS and no fan and it does not get that hot.

[ratdude747]

Re: Weird color switching- Dell e171fp

mine is an xfx one: with 4, not 8 chips since i had the 128



i bought this for it (still being shipped):









will that be enough? my nice one does not fit. bracket too big.