CTC-7 metal table top

[DaveWM]

the horz centering pot was a little bit stiff, some lube spray helped but I will test to be sure its not open. I have had problems with those before.

[Eric H]

Let's see some pics of the cabinet! Is it a Blonde by chance?

[DaveWM]

http://videokarma.org/attachment.php...0&d=1361386075

its in really rough shape, lots of rust on the inside and surface rust ruining the blonde faux wood finish.

[DaveWM]

did a little more cleaning, replaced the broken power diode, checked the plug resistance 150 ohms? oh yea the thermal switch. The B+ was about 10k thats good and it started out at about 3K so the filter caps don't seem to be shorted.

So next up will be the jump the thermal B+ AND jump the heater since I will be using a variac. Monitor the B+ and see how she goes.

Almost all of the tubes were heavy with corrosion on the pins, I used a wire brush and contact cleaner. I will prob have to work over the tube sockets as well with the dental brushes and cleaner.

The vert out looks like it was chewed on by something at one point, but I have a NOS one of those, same with the horz eff coil, but also have a backup.

The G1 and G2 pots are hidden behind a bolted on cover (nice) and were mostly frozen. again cleaner and lube seems to have gotten them going, but I may replace them all, I hate crappy pots, and I dont think they are anything special.

[DaveWM]

that was so odd, the B+ was coming up but not like it should. So I check the B+ at the cathode of each doubler diode, hmmm the one on the ground side was neg voltage compared to ground, thats not right. I had replaced the top hat with out even looking at the printing, duh the cathode was reversed from the other top hat. Geezz I never thought they were different (top hats), but this one was. so I reversed the new one and bingo all good. But very odd looking seeing those two diode connect back to back that way. This is why I like the variac, you can catch odd stuff at 10vac line that would blow a cap if you just plugged it in at full line voltage.

anyway letting it reform some watching current and voltage and temps of the caps.

[DaveWM]

the can caps were doing fine up to about 250v, up to 375v and one of the cans started getting real hot (triple section). letting it cool down will try again and will leave at 250v over nite and try again.

[DaveWM]

up to 300v staying cool so far.

Meanwhile I am electrocuting the fly cage, boil boil toil and trouble....

washing soda,H2O,rebar and 12v car battery.... vs fly cage... oh the humanity.