Pilot TV-37 Restoration

[Crist Rigott]

Originally Posted by timmy

what crt pin are you putting the 220 k, then attaching a 820pf cap to the resistor then to pin 5 of the vert output tube, I ask because I have a pilot without the blanking circuit and I may do the same.

Pin 2 the G1 grid.

[timmy]

Thanks

[timmy]

May I ask how you came up with 820pf, would 1000pf work ?

[Crist Rigott]

http://www.videokarma.org/showthread...lot+tv+retrace

[timmy]

Wow, my big bad, lol, yes I already done it I looked back on my notes for when I restored it. It was such a small change other then the restoration it self so yes it's done and no lines ever since, lol.

[Crist Rigott]

Originally Posted by timmy

Wow, my big bad, lol, yes I already done it I looked back on my notes for when I restored it. It was such a small change other then the restoration it self so yes it's done and no lines ever since, lol.

I thought you were loosing it! LOL!

[Tube TV]

Nice score Crist !
The Pilot has been at the top of my list of tv's to get for years now. Such a interesting set. Your work looks excellent, good job.

[Crist Rigott]

Originally Posted by Tube TV

Nice score Crist !
The Pilot has been at the top of my list of tv's to get for years now. Such a interesting set. Your work looks excellent, good job.

Thank you.

[Crist Rigott]

Well, I just lost HV! The picture went dark over about 2 to 3 seconds. I changed out the 25L6 and the 1B3GT tubes but no joy. I ohmed out the coil and that's good. No signs of anything being burnt either.
Any suggestions?

[Electronic M]

Originally Posted by Crist Rigott

Well, I just lost HV! The picture went dark over about 2 to 3 seconds. I changed out the 25L6 and the 1B3GT tubes but no joy. I ohmed out the coil and that's good. No signs of anything being burnt either.
Any suggestions?

First thing I'd do is check voltages on the HV osc and compare to the schematic. That should find something to point you in the right direction.

[timmy]

Originally Posted by Crist Rigott

Well, I just lost HV! The picture went dark over about 2 to 3 seconds. I changed out the 25L6 and the 1B3GT tubes but no joy. I ohmed out the coil and that's good. No signs of anything being burnt either.
Any suggestions?

I noticed with these pilots that if you turn it on then off for whatever reason and turn it back on within a few seconds the hv won't come up . Wait 25 seconds and it will likely come back on. There is a mica pot on the side of the hv cage check that. Hv adjust . And yes I thought for a moment I was losing it too....

[Electronic M]

Originally Posted by timmy

I noticed with these pilots that if you turn it on then off for whatever reason and turn it back on within a few seconds the hv won't come up . Wait 25 seconds and it will likely come back on. There is a mica pot on the side of the hv cage check that. Hv adjust . And yes I thought for a moment I was losing it too....

Tis the season for people to have too much on their minds and do things that make others think they are loosing it... I've already had a such a moment today.

[Crist Rigott]

Found it. It was the 35W4 tube went bad. Whew!

[timmy]

Did that 35w4 burn a hole threw the side of the plate.

[Crist Rigott]

Can anybody point me to solutions to the Vertical Linearity problems. Seems like I read somewhere to use a pot of 1M? instead of trying different resistors.

BTW, Sams says to switch out R59A to solve the problem. Mine never had a R59!

Thanks.