RM-503 oscilloscope TV project

[Yamamaya42]

Well, since my last GE clone project seems to be winding down, and I would be needing something else to “play” with, I thought about what else I could tinker with, I already have 3 color sets, 2 vintage tube ones, and the one I hate, the CTC-90, and 2 vintage BW sets, the FADA and the Stromberg Carlson, so I thought it's time for another BW set.
But finding one is not so easy, but then I remembered the site I saw about a converter for using an oscilloscope as a TV, and I thought why not? I have not played with static deflection TV before, and I did have the RM-503 that has been sitting for years collecting dust.

Stock pictures.
http://w140.com/tekwiki/images/6/68/RM503_5.JPG
http://w140.com/tekwiki/images/a/a7/RM503_bottom.jpg
http://w140.com/tekwiki/images/f/f2/RM503_1.JPG

how to do it.
http://www.electronixandmore.com/pro...ope/index.html

A brief history of the unit, I saved it from certain destruction while working at my first job as a tech in the mid 90s, I noticed it and asked about it, It did not work,sort of, and asked and they let me have it, it would have been scrapped otherwise, when I tried it then, it DID come on but barely worked, and would not make a usable trace on the screen, but if you messed with it you could see the scan run across.

Since then, it has sat all these years in storage, until last week when I tried to slowly bring it up, and the main power tube exploded, in a nice purple glow and pretty sparks, and looked like this inside.
https://i.imgur.com/TOjlwoF.jpg

there was also a warm cap, not TOO hot, this was not the cause of the tube going south, it was gassy. I'm sure.


https://i.imgur.com/Ry1UQ1Z.png
https://i.imgur.com/xISiHy0.png

C654 was getting a bit warm so I'm replacing it.
all others were cold
V620 exploded new one coming.

This thing is VERY well made, only 4 paper caps in the unit, surprising for something this old, and they are in places that do not matter, ALL others are ceramic or mica,etc, save for the electrolytic capacitors in the PWS.

once I get the new power tube and the cap in I will try to power it up again, I don't expect it to fully work yet, but I don't expect it to blow up again!