gene@batman.UUCP (Gene Mutschler) (07/10/85)
[yum yum] (Sorry to clutter up the net with what is an educated guess at best, but our mailer isnt working particularly well...) Rich Wales at UCLA Computer Science Department has a problem with his cable connection... > I have a VCR and a 25-inch cable-ready TV/monitor, connected in series > (outside cable goes through an extension into VCR; jumper from VCR to > TV). > > Normally, everything works fine. However, every few days I get very bad > snow and ghosting on the low-band VHF channels (2 through 6). Problem > exists via both tuners (TV and VCR); hence, I assume it is on the cable > somewhere. > > Now comes the baffling part: After seeing a good picture on the small > TV, I reconnect the outside cable to my extension, and the picture on > the big TV is now fine -- remaining so for a couple of days at least. > > I have not yet tried disconnecting my extension cable at the VCR and > attaching this end directly to the TV; I will do this the next time the > problem appears. I think that this MIGHT cure your problem, provided you leave your VCR OUT OF the loop entirely. The problem could be local oscillator leakage from the tuner of the VCR on the VHF low band back to the distribution amp for your house. It could cause the distribution amp to cut out (hence the snowy (weak) picture). Putting the VCR downstream from the TV might be OK, depending on the isolation provided by your TV set.
dwl10@amdahl.UUCP (Dave Lowrey) (07/11/85)
You should verify that the outside cable, and all of your video
equiptment is properly grounded. The outside cable should have a
connection between the shield, and a good ground such as a 6 foot
pole that has been driven into the ground.
If the plugs on your VCR and TV aren't polarized, then try reversing ONE
of them.
Or, get yourself a new extension to go between the outside cable and the
VCR.
--
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Dave Lowrey
"To vacillate or not to vacillate, that is the question....
....or is it?"
...!(<sun,cbosgd,ihnp4}!amdahl!dwl10
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