[Zenith6S321]

Originally Posted by wiseguy

it seems that I remove 1 bad Resistor and then find 3 more near it way off value and have to keep ordering parts

Sounds just like mine. Clip one lead of a part to test it and find two more underneath that also need tested and replaced.

Originally Posted by wiseguy

I found the Contrast control Circuit after the delayline ( r81,L33,r82) wired completly different than what the sams shows, I could not find any other manual

My guess is that the RCA service manual schematic shows the original design and maybe the Sams shows the production run changes.

Originally Posted by wiseguy

the CTC3 Convergence Chassis is also a Bit Different than the Sams, using a 40uf Bi-Polar cap instead of the 10uf in the sams, and mine has a lot of other Resistors that the sams does not show, the chassis is a higher serial number .

Same here. I have restored my CTC3 chassis with the same part values it came with. I works, but my first attempt at convergence was not so good. I want to try the Sams changes to see if that helps.

Originally Posted by wiseguy

The Seleniums are original and are very Stable, so I am not going to touch them unless something comes up.

My seleniums were long gone, so I put the modern diodes and dropping resistors under the old rectifier cover.

Originally Posted by wiseguy

I had strange /intermit problems with the tuner, it was easy to remove and CAREFULLY open up..and found a total of like 5 open Resistors, I replaced them very carefully not to bend or disturb any formed coils..replacing all those solved my dropping out RF and poor AGC.

I am going to try that next, even though tuner lead dress seems like black magic to me.

Originally Posted by wiseguy

I have no idea what the picture looks like because the Cabinet with CRT is 2 floors down, can't carry anything up or down yet. at least the Fly looks new and the CRT test Excellent, not bad for sitting in a garage for 30yrs

I also restored the main chassis and HV section, ran socket resistance checks, power supply tests, socket voltage checks, and audio and video tests with a VA62 using a scope to trace signals through the set before I got the CRT connected. I was holding my breath at the first power up with the CRT in it hoping that the vacuum was good enough to not get the CRT tube neck glow. I felt like I won the lottery when a picture showed up.

Here's hoping you have good luck too! Hope you get better soon. I know its hard to be patient but these sets weigh a ton and you don't want to injure yourself or the set. Its probably best to take your time with the restoration and wait until you are back at 100% before moving that heavy chassis. Better yet, maybe you can get some help moving it.

Dave