Snow.

[jpdylon]

And not the stuff you can pack and throw at people.

I'm nearly done with the capehart, but it has snow troubles. THe sound is crisp and clear and stays that way through the entire fie tuning adjustment.

There appears to be no lack of RF sensitivity, as the set will pick up off air stations 30 miles away (with no antenna connected) with about the same amount of snow as if I hook up the VCR to the antenna terminals.

I've torn down the tuner. The 300 ohm lead has no breaks. All the resistors are within respectable limits of tolerance, not one is more than 10% off. Tuner supply voltages are excellent, about on par with the schematic, B+ slightly higher. This is the later capehart tuner using the 6j6 oscillator and 6BK7 RF amp, a 13 position turret type.

All tuner and IF tubes have been replaced with NOS that all test like new on my heath and SiCo testers. THe set has been re-capped and alot of out of tolerance resistors on the power supply and sweep sections. THe power supply voltages are very good.

I've troubleshooted and determined that the AGC section is not at fault. Voltages on the AGC bus are well within spec and its adjusting properly when varying signal input.

At this point I'm somewhat stumped. I'm wondering if the video carrier is weak due to a failure in the iF strip. Perhaps a misalignment? THis set has been tinkered with alot by its previous owner, so there's no telling what else may pop up.

I'm close to being done with this set, just need to get this picture problem out of the way.