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!