I see nine pins?Mine has even fewer pins..8.
Yeah, I wasn't counting the pin in the notchI see nine pins?
Could be a tube issue too. Did you check the TV before you gutted it?Interesting. So perhaps the coloration issue was with the 29E31S itself?
Would throwing the MS2933 on the same tube as a sanity check produce the desired result?
I have similar results with my yoke swap on Ms2931, i could never get rid of the top and bottom bows no matter how much I tweaked the yoke positionHere is the result with just swapping the yoke and not trying purity, convergence, pin, ect yet.
I have the same problem on one of my 2930s. No matter what I do, I still have the bows. I think it’s just these semi curved tubes.I have similar results with my yoke swap on Ms2931, i could never get rid of the top and bottom bows no matter how much I tweaked the yoke positionHere is the result with just swapping the yoke and not trying purity, convergence, pin, ect yet.
2930 with original Toshiba tube? might be a chassis related issue thenI have the same problem on one of my 2930s. No matter what I do, I still have the bows. I think it’s just these semi curved tube
It's way worse in real life, I'm living with it but would like to make it better if possible. never heard of the magnet on the yoke trick, I used magnets on the tube to fine tune purity though.The bowing can be fixed with magnets placed on the yoke.
The one in @djcalles pic doesn't even look that bad. I would be perfectly happy with geometry that looked like that.
WOW! Awesome, I shall try this too, I have some discarded yokes too. Thanks mate.
Good deal!Apex tubes work afterall.
Threw an MS2933 chassis and yoke on the Apex tube and it works. Didn't have the yoke lined up perfectly. Didn't dial in purity with the rings. I supppose the 29E31S chassis is faulty or it doesn't like the tube.
But, suitable donor is now found.
Sorry to revive an old thread, but I have the same tube, and am considering putting it into a MS9 chassis. Ive send a PM with some questionsD series are exclusive to the US, I believe, so no. My tube is from a mid/high range panasonic TV: M68KTY167X this tube is made in USA so you should be able to find it over your side of the world. According to this page, it is a rebranded AMEC: http://forum.arcadecontrols.com/index.php?topic=28188.0
The swap is successful from an electrical perspective (I have tried both with a 2930 and 2931) but I have not put it in the blast frame just yet. The curve looks right to me but I'll have to wait until it is fitted to say for sure.
Although not an exact science, I think looking for tubes/TVs from the same years that the blast was in production helps with the curve. I have added a pic of the plastic cover's date, never knew how to read these things.