Commodore PET 4032 problem (4 beeps)

From: Tony Duell <>
Date: Sat Oct 16 17:42:48 2004

> > First, make sure the monitor is working (There's a
> > brightness control on the back which may have been
> We played with that control ... no change (i.e., nothing
> visible of any kind on the monitor).

_My_ next moves would be to look at the sync and video output signals
from the logic board with a 'scope (to make sure the video side is doing
something), then to take the back off the monitor section and see if the
CRT voltages look sane. And see if the heater is glowing.

Of course this assumes you have access to test equipment and know what to
look for inside a monitor.

Received on Sat Oct 16 2004 - 17:42:48 BST

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