Re: How do I fix my Apple IIc monitor?

["Jared Falvo" <luposian@mailcity.com>]

I ventured to "do the yoke" myself.  When I turned the monitor back on, I
started laughing when I saw that the text was now SERIOUSLY tilted up,
instead of down.  Well, after debating whether not it was safe to do so, I
finally took the cover off again and started pushing on the magnet "tabs"
(which are attached to a plastic ring portion of the yoke) while the
monitor was on and watched as the text would slowly move back into
alignment.  I decided to use the back end of a plastic flashlight to push
with, but when I saw that was too cumbersome, I used a small 3.5" plastic
external bay cover (as found on PC's) to push with.  Worked great.  I even
ventured so far as to slip my philips screwdriver down to the screw and
turn it a little to try and make turning the yoke a little easier.  Unless
you're ABSOLUTELY sure you know what you're doing or are an EXTREMELY
careful person around high voltage and other electronics, DO NOT TRY THIS
YOURSELF!  Just because I did it, doesn't mean everyone else can.  I
resorted to doing it myself because I don't have the money to pay someone
else to do it.  And, it paid off.  But you shouldn't do this unless you
know what you're doing and/or can't afford to pay someone else to do it for
you.

Now I know something I never knew before, because no one would tell me!  I
could've fixed my NEC XV14 monitor (that had the same problem) that way,
assuming the yoke wasn't glued.

Thanks for the information.  Now, all I need to do is figure out how to gut
this monitor, clean it all out and reassemble everything back again.  Just
so that all that dust and junk isn't overheating the monitor.  At the very
least, I wish I had a nice air conpressor to blow all this gunk out.

Oh, one other thing, anyone know how to un-yellow plastic?  Seems the space
bar and the case on my IIc are pretty yellowed (probably from sun
exposure).  As well, the case on the IIc monitor is also seriously
yellowed.  Would bleach work?  The yellow doesn't affect function, but it
sure doesn't look pretty... I suppose I *could* paint the monitor a
different color... like blue or grey or something... :-)

Jared
-----------
Paul Grammens <pgrammen@sonic.net> wrote in article
<373DE388.69EC@sonic.net>...
> Jared Falvo wrote:
> > 
> > Can it be done by myself?  In other words, do I need special tools to
do it
> > or can it be done by hand? 
> 
> I'm not familiar with the exact innards of that monitor, but in general
> the yoke coils are glued or clamped in place. If they are glued, I don't
> mess with them. If clamped, you can usually loosen the clamp a bit and
> rotate the yoke slightly.  Another possibility is rotating the entire
> tube slightly.
> 
>  If so, how do I get the case off enough to do
> > it? 
> 
> If you can't figure that out, you probably should leave the job to
> someone who can. 
> 
>  How far do I move it?  Do I move it to the right, from the back of the
> > monitor, or to the right from the front of the picture tube?  In other
> > words, which right do I turn it?
> >
> 
> The yoke is around the neck of the tube. Pretend the picture on the
> screen is attached to the yoke. Rotate the yoke in the direction you
> want to rotate the picture. 
>  
> > How much do you figure a TV tech would charge to do this?  I haven't
any
> > real money to spend on this...
> >
> 
> They usually have a minimum charge, which would apply in this case since
> it is a simple task.
> -Paul
>