Re: MONITOR IIC: Image slightly tilted; How to fix?

[dalloff@freenet.columbus.oh.us (Dave Althoff)]

stephen e buggie (buggie@mirac.unm.edu) wrote:

: I got another 9" green Monitor IIc (on angle bracket) at a Goodwill thrift
: shop.

: Its image is sharply focused.  Its only problem is that the square image
: is slightly tilted to the right!

: HOW CAN I MAKE THE IMAGE STRAIGHT AND LEVEL???  Fiddling the knobs made no
: difference.

There should be a couple of aiming magnets on the back of the picture
tube.  It is possible that one of them has fallen off and is now rolling
around in the case someplace.  But these magnets are usually attached to a
ring on the back of the tube, and you can rotate that to fix the problem. 
Those are usually secured with a drop of paint.

: Possibly, is there a movable harness at the back of the tube?  Could that
: harness be readjusted to straighten the image on the screen?

Uh, yeah.  That's the thing.  8-)

: I think I could memorize the angle of tilt and could do it with power off.
: But what precautions would be needed to avoid a large capacitance shock???

The basic precaution is to shut the power off and, with the unit plugged
in to a grounded outlet, ground out everything to the chassis.  Or unplug
the unit and ground everything to ground. (probably better).  Time is your
friend as well; I believe someone (Rubywand, I think) posted a fairly
complete set of safety tips for working on CRTs some time ago...I think it
was relative to a common GS monitor repair...you might check DejaNews...

--Dave Althoff, ][.

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