Bryan's Philco TV-123

[bgadow]

Originally Posted by Electronic M

I'd like to know the tricks to finding those new door knobs. I've got a TM-21 with a dead shorted doorknob, and I suspect the somewhat unstable regulated HV level and slightly higher (than I like) H out current/temp in my 21CT55 may have something to do with bad doorknob caps.

Let me know what you're looking for and I'll see what I can find.

I replaced the reactance coil tonight. I had 3 or 4 NOS Miller or Meissner replacements but I couldn't figure out how they were supposed to work as the original had 5 terminals and these have 6. They all have one terminal painted with a green dot but the Philco had it on the opposite side. Well, I solved my problem because further digging in my box-o-coils turned up a genuine Philco "pull". It has a different suffix but my cross reference charts take it to the same replacement. I got that installed after supper and, since I could now get audio on the bench with a converter box connected, naturally I had to try it again with everything hooked up. This is when it gets to be fun! Plenty of work to do but I'm very happy with how this is turning out.

[Kevin Kuehn]

Looking very promising.

[Electronic M]

Originally Posted by bgadow

Let me know what you're looking for and I'll see what I can find.

I'm looking for the following. 2500pF @ 30KV, 1200pF @ 15KV, and 1000pF @ 10KV. I'm probably going to get a 2000pF 40KV for the first one since I feel 30KV is under rated for a 25KV line that can do over 30 if the regulation fails, and Bob G has had success with that value...I think I can find the 1000 on mouser, but I'm not sure what to do about the 1200...it seems Murata does not make that value of door knob anymore according to the datasheet for that part family. If I can I'd like to go up 5-10KV on all the door knobs I order to ensure they last as long as I live (especially since they are getting discontinued). Also according to the datasheet the threaded ends only project about 1mm so I'm going to have to come up with something with the parts available at the local hardware store to match the 1" terminal projection of the originals.

If you rather we discuss this privately send me an email. My PM box is full.

[oldtvman]

Originally Posted by Electronic M

I'm looking for the following. 2500pF @ 30KV, 1200pF @ 15KV, and 1000pF @ 10KV. I'm probably going to get a 2000pF 40KV for the first one since I feel 30KV is under rated for a 25KV line that can do over 30 if the regulation fails, and Bob G has had success with that value...I think I can find the 1000 on mouser, but I'm not sure what to do about the 1200...it seems Murata does not make that value of door knob anymore according to the datasheet for that part family. If I can I'd like to go up 5-10KV on all the door knobs I order to ensure they last as long as I live (especially since they are getting discontinued). Also according to the datasheet the threaded ends only project about 1mm so I'm going to have to come up with something with the parts available at the local hardware store to match the 1" terminal projection of the originals.

If you rather we discuss this privately send me an email. My PM box is full.

I have tons of nos Rca and Zenith tv parts, I'll take a look and see if I have anything like that