Re: Apple Lisa Display

["Vince Briel" <vbriel@attbi.com>]

I've had to adjust video on my Lisa 2.  You have to remove front & rear
cover.  Remove power supply and card cage.  Underneath the lid where the
card cage was is 2 screws that hold the top of the casing to the frame.
undo those (they don't remove) and remove the top of the case.

Facing the front of the Lisa next to the tube are your video controls
(brightness, etc).  Mine simply needed a cleaning out of the pots since it
had sat in storage for a while.  Try small adjustments remembering where the
original location was.  Sometimes just working the pots back and forth for a
while gives them good connnection again.  If that fails, you can remove the
video board and clean it out with TV cleaner or something like that.

Remember to use caution, there is a few thousand volts that goes into that
tube and it hurts, trust me, I KNOW :(

If the board has failed, watch ebay for somebody selling spare parts.

Hope this helps.


--
Vintage Computer Resource

http://www.vintagecomputer.tk


"Eric Smith" <eric-no-spam-for-me@brouhaha.com> wrote in message
qh4r6s2di5.fsf@ruckus.brouhaha.com">news:qh4r6s2di5.fsf@ruckus.brouhaha.com...
> fsbilly@yahoo.com (Billy) writes:
> > i have a Lisa 2/5 that was working great a couple of weeks ago.  now
> > when i start it, the screen shows a bright horizontal line and a bunch
> > of dimmer diagonal lines.  i'm thinking the display card has taken a
> > dive, but i dunno.
>
> Normally a single bright horizontal line, typically across the middle of
> the tube, would indicate that vertical deflection has failed.  But in
> this case, the dimmer diagonal lines indicate that this is not the
> problem.
>
> Anyone that repairs monitors should be able to fix it, there's nothing
> too special about the Lisa monitor.  The scan rate isn't normal RS-170
> or NTSC, but then neither are VGA monitors and lots of people can
> repair those.
>