Viewsonic 28" Monitor Dark

[BeeJ]

Expensive but worth it for a while until it went dark.
VX2835WM

So ... before I destroy it by poking around inside.
What might it be?
Where can I find a schematic?
Is there a typical failure?

I have a scope and meters.

Suggestions and discussion would be helpful to get me in the right
mood. lol

And if it is a capacitor that went bad should I expect any visible
signs?
Probably unlike the radio I had that had a bad cap, I struck it a few
times and got a indication that it was in need of replacement. That
was all it took. Here's hoping similar for the monitor.

 

[Franc Zabkar]

On Tue, 16 Oct 2012 15:39:05 -0700, BeeJ <nospam@spamnot.com> put
finger to keyboard and composed:

Expensive but worth it for a while until it went dark.
VX2835WM

So ... before I destroy it by poking around inside.
What might it be?
Where can I find a schematic?

http://elektrotanya.com/viewsonic_vx2835wm-1_vs11531.pdf/download.html

- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.

 

[who where]

On Tue, 16 Oct 2012 15:39:05 -0700, BeeJ <nospam@spamnot.com> wrote:

Expensive but worth it for a while until it went dark.
VX2835WM

So ... before I destroy it by poking around inside.
What might it be?
Where can I find a schematic?
Is there a typical failure?

I have a scope and meters.

Suggestions and discussion would be helpful to get me in the right
mood. lol

And if it is a capacitor that went bad should I expect any visible
signs?
Probably unlike the radio I had that had a bad cap, I struck it a few
times and got a indication that it was in need of replacement. That
was all it took. Here's hoping similar for the monitor.

By "dark" do you mean NO image, or a faint image when you hold a
flashlight beam on the screen at an angle when the screen *should* be
displaying an image? These point to different failures, in signal
processing or backlighting respectively.

There is a VERY active/useful forum with resident gurus whose life
seems to revolve around repairing monitors:

http://www.badcaps.net/forum/forumdisplay.php?f=30

You need to join, but there is no downside to that. Join, post there,
and they will almost certainly steer you through the repair process.

The fact that you have meters and a scope (and I am presuming the
obvious - that you are familiar with their use) will stand you in good
stead. Mention that in your initial post to the forum.