lcd monitor repair?

[Guest]

Archived from groups: comp.sys.ibm.pc.hardware.video (More info?)

question to all..

I was able to narrow down the cause for the streaks & ghosting on the
Viewsonic VG175 lcd monitor.

it was originally thought to be a driver problem and that turned out to
be negative.

that left the matrox g450 video card.

swapped the monitor that was streaking & ghosting via the KVM switch to
another computer. no streaks or ghosting on that one.

then I tried something else. left the monitor switched to that computer
and left it alone for awhile. came back, it had streaky lines....

that pretty much rules out the video card.

so it appears the lcd monitor is the culprit.


so, the question is, can an lcd monitor be repaired?

 

[Guest]

Archived from groups: comp.sys.ibm.pc.hardware.video (More info?)

Dilbert:
A customer brought in a Viewsonic VP140 LCD monitor for repairs.
A lot of streaking in the picture.
I opened it up and started checking the small surface mounted electrolytic
capacitors on the main circuit board. I used a capacitor ESR meter and
found 24 out of 49 to have high ESR readings. I have not ordered the
replacement capacitors as yet, but I strongly feel that this is the
cause of the streaking. You might want to check your capacitors.
Hope this helps.....
John

 

[Guest]

Archived from groups: comp.sys.ibm.pc.hardware.video (More info?)

John Gill wrote:

>Dilbert:
>A customer brought in a Viewsonic VP140 LCD monitor for repairs.
>A lot of streaking in the picture.
>I opened it up and started checking the small surface mounted electrolytic
>capacitors on the main circuit board. I used a capacitor ESR meter and
>found 24 out of 49 to have high ESR readings. I have not ordered the
>replacement capacitors as yet, but I strongly feel that this is the
>cause of the streaking. You might want to check your capacitors.
>Hope this helps.....
>John
>

ok thanx for the tip on the capicitors.

.. 24??? wow, that's half of its bank.

how much do those capacitors cost?

 

[Guest]

Archived from groups: comp.sys.ibm.pc.hardware.video (More info?)

> ok thanx for the tip on the capicitors.
>
> . 24??? wow, that's half of its bank.
>
> how much do those capacitors cost?

They usually run from about 14 cents to 25 cents each.
They can be purchased at Jameco, MCM, or Newark Electronics.
Most vendors have about a $20.00 minimum order.
John