So first the bad news: my Blu-ray player has the zoom settings in a retarded state that pillar-boxes 4:3 content to have bars on the sides, and I don't have a remote to fix that menu setting....
The good news in video form...Click to visit then click to watch:
Of all the Model5/CT-100/21CT55 screenshots and videos I've seen on the internet, I can't ever recall even one showing the RCA CED/Selectavision intro theme being fed to one of these sets....How this has not occurred to anyone before I can't fathom....But I can put two of RCA's coolest engineering achievements together, and let people nerd out to it.
And now some obligatory Wizard of OZ screenshots:
'How did it get to this point?' you ask....Well After rearranging some stuff I decided to move the cabinet to the workbench gather/make extenders for the yoke, CRT and speaker (but not the dynamic convergence...That reaches if the chassis is not mounted), and then go about dipping the H out cathode current with the osc in sync and it's waveform correct. I dipped the current using the linearity and drive controls. It is at a steady 217mA with the B+ at 390V....I've found the B+ affects it too. I decided to dip the B+ to 375V where the cathode current is around 205mA....Running it that way for an hour the fly is just slightly above my body temp which I think is quite a healthy temp for it.
I then adjusted the vert section and centering and fed it color bars....I was VERY disappointed and confused. The color bars made NO sense at all and adjusting the tint did not help. I also had to super glue the red static convergence knob back on to the magnet. It broke off with a gentle twist.... I went on to check the tuner on channel 7 and 13. Seven got nothing and 13 did not improve, but I discovered 12 will pass sound from 13 and the monochrome video....It will also pass the local NPR station(I can see the tower and tune it on otherwise dead FM tuners) on part of the fine tuning range on channel 12. What is up with that?
That all (except for the hour run) was Wednesday and I gave up for the night.
Earlier today I decided to get back on it. I decided to do the purity adjustment. I did try to prep for it Wednesday, but the screen controls did not kill any gun or work as expected in terms of color change. I found it easiest to short the B and G grids to ground to leave only Red...It did not look red at all, but what the hell. First try I got much more red on the screen, a few back and forths with static convergence, purity rings and eventually the face magnets, and I got it fairly good (worst primary pictured)....Best yet I turned up the color adjusted the tint and got good SANE color bars. It seems the purity was SO far off before that the guns were all completely scanning each others phosphor!
I then pulled the vert tube, shorted the CRT grids together and grounded them through a 100K resistor. I set R and G to produce a reddish yellow (ISTR hearing these sets were meant to have a slightly reddish grey scale) then blue for white. I then removed the jumpers. plugged the vert tube back in and adjusted the B and G drives for slightly reddish whites. I need to figure out the B and G balance controls (I adjusted the outer one by accident).
So far it is REALLY good. If the RF/IF system would only pass color I'd be about content with performance.
I need to order new resistors for the focus/HV reg system...I also need a need a new HV probe...My favorite/accurate one fell off this set 4' onto a concrete floor and shattered. That probe probably saw 8-10 years of service since I got it (plays taps softly).
BTW / PS I added pics of my video amp and the contrast control/it's kludge replacement to an earlier post on the first page of the thread.