17 Nov
2005
17 Nov
'05
1:04 p.m.
On Wed, 2005-11-16 at 16:21 -0800, Chuck Guzis wrote:
I can't beleive you've never had a VT220 with horizontal hold problems.
If you get that fault, the cure for 99% of them is to pull the cover,
twiddle the horizontal hold preset back and forth a few times, re-set it
to the original position, and give it a try. Most of the time you'll get
a good picture again.
The fact hat the 'right point' is still at the original setting seems to
prove it's not something else drifting in the terminal. It's bad contacts
at that preset.
-tony
On 11/17/2005 at 12:43 AM Alberto Rubinelli - A2
Sistemi wrote:
pots normally seem to be OK though *until you touch them*, as the wiper
still has good contact until it's moved onto a corroded spot. Personally
I've found it unusual to find one that's failed without even being
touched. As soon as I touched the trimmer, I discover the
problem !! The cursor was
instable !!
Congratulations!
One of life's hard-learned lessons: On old equipment, pots, switches,
sockets and connectors are not your friends.