Looking for 7DP4 or GL-4592
 

Hi: I just recently picked up an RCA 621 and the crt checks with a blown filament. Does anyone know if Dennis Choinski still has any of his GL-4592s? Or does anyone out there have a working, spare 7DP4 they'd like to sell? I realize I'm probably asking for the moon! Help!!!

Reasons like this are why I proposed building a run of clones at RACS...

Don't forget to check the pins to be sure that the solder on the filaments are good...

Count me in, Nick, if your do get a chance to build these or the guys at RAC do it.

Sometimes one can re-weld a break in the filament(if one can find a position at which it has intermitant continuity ie the halves of the break touch) by charging a capacitor and positioning the tube so the broken halves touch YMMV.

....

The stuff we collectively know :yes: here is remarkable.

Another source of HV, limited current is an oil burner ignition transformer. I may have an opportunity to do this.:D

Boy, ain't THAT th' Truth !! Amazes me every day...(grin)

I don't deserve credit.
I think I read about that method here some months back.....It has just kind of stuck in my mind.

I just picked up a 621 and find myself in the same boat - the 7DP4 filament is blown :(

You have been checking off that want list pretty nicely :thmbsp:.

I have not seen many 621's in the last few years become available with a
good crt, that's why they are so many showing up.
I have a vg crt but have been looking for the 621's wood bezel [the one over the
crt] for several years - I would pay for a decent bezel, or even a 621 with a
known bad crt [if reasonable].

Indeed - three in one weekend :banana: They all have issues, but that'll give me something to do for the next few years.
http://farm9.staticflickr.com/8101/8...eddd189d_z.jpg

If I have 2 I can spare one will look.

Don who runs the ETFauction had rebuilts from HawkEye. You can contact him. I had one rebuilt works super.