monitor with screwed colour in bottom-right of screen

From: Jules Richardson <>
Date: Sat Mar 13 15:22:41 2004

On Fri, 2004-03-12 at 19:36, wrote:
> Sounds like the purity compensation circuit isn't working, check that
> your monitor compass module is working. Yes there are few monitors
> has one uses it for automatic purity adjustments when monitor is
> facing in different direction.
> How I know? Fixed an high end sony 21" monitor with that feature.
> It was bad compass module IC, more precise, a pin corroded off, fixed
> that by grinding away black package and solder short strand of to
> make connection. Compass module board is usually horizontal and
> almost centered where the base axis is.

Funnily enough, I'm using the screen right now, just to see how good it
is for prolonged use. The display is almost perfect in the position that
I want to sit it on my desk - after reading your post I just tried
rotating it and the problem does indeed get worse depending on which
direction the screen is facing.

Whether the screen has such a compass module which is faulty (first time
I've ever heard of such a thing!) or whether it's just down to natural
magentic fields I don't know. I never realised the orientation of a
screen could have such an effect on the output though!

I need to find some good test patterns and then go tweaking a little -
the focus could do with a tiny adjustment IMHO anyway. (There's a 3-way
switch inside the monitor; I was hoping one position was for some kind
of built in test mode but it seems not)


Received on Sat Mar 13 2004 - 15:22:41 GMT

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