While we're talking about Lisas - test-drb@ccmp.vtda.org

16 Jul 2000

Thanks Louis, I'll give that a try. Other things I've got to check are the
voltages on the card so I'm leaving her for a couple of days to allow the
tube to discharge before I take the stinger off; I've been told its best to
solder some extra wires onto the components in question to allow easy
voltage checking without the risk of zapping myself.

...
  -----Original Message-----
 From: Louis Schulman [mailto:louiss@gate.net]
 Sent: 15 July 2000 00:25
 To: Adrian Graham; classiccmp(a)classiccmp.org
 Subject: Re: While we're talking about Lisas

 This definitely sounds like a video card problem.  Most
 often, the adjusting pots at the top of the card become
 oxidized, and provide intermittent or no performance.

 Thus, you might try the standard procedure of applying some
 tuner/channel selector cleaner, and twisting the pots back
 and forth, remembering their original position.  Some
 adjustment will likely be necessary.

 Of course, I could be wrong.  But it is worth a try.

 Louis

 On Fri, 14 Jul 2000 14:34:24 +0100, Adrian Graham wrote:

 My Lisa 2 (vanilla one, 1.2A PSU) has developed a
habit of   turning the
 screen off while she's running. In fact
it's now permanently   off which is
 annoying to say the least. Some of you may have
experienced   this before so
 here are the symptoms;

System working fine (at the time running MacWorks 1.0),   screen goes dim as
 per screensaver then blinks off like I'd hit
the power   button. It eventually
 comes back on after leaving it powered down for a
couple of   hours. James at
 Sigma Seven Systems said he thought he remembered
there was   a serial port
 bug in MW1.0 that caused the screen to go off
sometimes so I   left it at
 that. 
I've now got myself a ProFile so I was intending on   installing LisaOS 3.1,
 but when she was powered up for the first time
since maybe   mid-may the
 screen came on briefly then blinked off again as
it did   before; since then
 it's only come back on once for around 10
minutes.
While all this is going on the machine keeps running   normally. If I power up
 I hear the self test passing, if I've got the
first OS disk   in (or MacWorks
 boot disk) it will actually boot, if I've got
a standard   composite monitor
 connected I can see things happening so I know the
machine itself is
fine.......

Anyone else seen this? I've got another video card and   screen coming over
 but it won't be here till the end of august;
to say I'm   champing at the bit
 would be an understatement :)

cheers!