Sony KV-2643R score

[freakaftr8]

Got bored today while waiting on some caps on order for my CTC-16..

With the junk CRT tester I have connected to the heater voltage on this Sony, I performed something that came to mind.. A little experiment of sorts.

I notice that when I jump the voltage up to around 8V, I get green saturation that seems to lack at 6.3v. With heaters running at normal voltage I get green smearing to the right and in kind of reddish whites.

I would jump the CRT voltage to around 12 and without hitting the tube with a rejuvenator, I would hold it there in tap the back of the neck well I bring it the heater voltage back to 6.3v. I did this roughly 10 times and when to hold it at the 12v for about 10 minutes each time. And every minute I would tap the neck with the handle of a screwdriver. (This is because every time at high heater voltage, the green would flicker in if I tapped the neck)

Every time I would bring it back down to 6.3, the picture Room go back to a murky reddish color with greeny whites with some smearing. After about the 5th or 6th time running at 12 V I had a massive amount of green saturation, Then the picture went bright green with retrace lines. At that point I brought it back down to 6.3 and the green screen with the retrace slowly faded back down. Suddenly I had the picture you see here. No more blur Or smearing at all. On a neck of the CRT by measuring a 143 V on the green where I had a 111 V before . Blue and red
measure about a 148 V.

Is this the AKB circuit balancing the guns? I didn't thing. Set of this vintage has auto kine bias.. But man, surprisingly it looks way better. I had to rebalance the drives to compensate for the sudden green gun improvement. Red seems better too from early on with the crazy chassis derived rejuvenation I did. Lol. I'm close to dumping this thing off to e waste, but thought I'd have some fun with it. Now it looks really good...

Wonder for how long. It's been on all day and still looks surprisingly good. oh well.