Old Muntz TV for sale Locally to me, Should I pick it up?

[vortalexfan]

OK So as luck would have it the tube socket for my Video Amp circuit on my TV is got a couple of damaged pins and I need a new tube socket, its an octal tube socket that mounts from below.

it looks like the one pictured in the link below.

https://www.tubesandmore.com/product...unting-centers

It also seems that I'll need a new 6AC7 tube as well for the Video Amp on my TV as one of the pins on the tube is broken.

[dieseljeep]

Originally Posted by vortalexfan

OK So as luck would have it the tube socket for my Video Amp circuit on my TV is got a couple of damaged pins and I need a new tube socket, its an octal tube socket that mounts from below.

it looks like the one pictured in the link below.

https://www.tubesandmore.com/product...unting-centers

It also seems that I'll need a new 6AC7 tube as well for the Video Amp on my TV as one of the pins on the tube is broken.

If the original socket is one of those molded bakelite jobs, try to find a scrap chassis with the same kind of socket and steal the contacts from it. It's easy enough to do. The only ones you cant repair is the flat phenolic wafer type.

[Electronic M]

Originally Posted by dieseljeep

If the original socket is one of those molded bakelite jobs, try to find a scrap chassis with the same kind of socket and steal the contacts from it. It's easy enough to do. The only ones you cant repair is the flat phenolic wafer type.

+1 Saves a lot of effort doing it that way. Takes a bit of skill to get the donor contact out intact especially if it was soldered, but still much easier than a socket swap.

[vortalexfan]

Well a bit of bad news I replaced the power supply caps and went to test my work and the 5U4G Rectifier tube is still arcing so it looks like it wasn't the power supply caps that was responsible for the arcing rectifier tube after all (actually I tested the original power supply caps after I removed them out of the circuit and they tested fine yet, they weren't shorted or anything.)

Any other ideas as to what could cause the Low Voltage rectifier tube to arc?

[kvflyer]

If you are sure that there is no extra load on the B+ (read, miss wire, leaky-shorted electrolytic capacitor) the 5U4 can be suspect too.

[vortalexfan]

Originally Posted by kvflyer

If you are sure that there is no extra load on the B+ (read, miss wire, leaky-shorted electrolytic capacitor) the 5U4 can be suspect too.

I've replaced all the electrolytics in the Power Supply chain, including the 20/10/10 @450 electrolytic can that's over by the high voltage cage area. And I've even tried 6 different 5U4 tubes and they all arc inside, and they all were new old stock 5U4 tubes or used ones that tested good yet.

Not sure what else to look for.

[Kevin Kuehn]

Double check that your replacement electrolytic caps are polarized correctly, if one is reversed it can fail and act like a dead short. Also look for any unusually low resistance reading from B+ to chassis ground. Check that both leads of the focus coil are not shorted to chassis ground. What value fuse is in the holder on the rear chassis? One would expect that fuse to go open if B+ is pulling excess current. You mentioned you don't have Sams 110, by any chance do you have Sams 101, folder 5?