While we're talking about Lisas

From: Adrian Graham <agraham_at_ccat.co.uk>
Date: Mon Jul 17 04:20:58 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_at_gate.net]
> Sent: 15 July 2000 00:25
> To: Adrian Graham; classiccmp_at_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!
> >
>
>
Received on Mon Jul 17 2000 - 04:20:58 BST

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