Free: broken but possibly fixable sync-on-green monitor

[Eric Smith]

Tony wrote:
> Most of the time, a smeared picture _is_ a fault in the video amplifier,
> though. But it may not be.

It can also be caused by use of a cheap video cable or a cheap KVM switch.
(Note that I deliberately used the word "cheap" rather than "inexpensive".
I've seen expensive video cables and KVMs that were "cheap", and
inexpensive ones that were not "cheap".)