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Neotec NT-500DX Repair

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Rocketeer2001:
I'm going to stick a fork in this thread, because I think this was as successful as it could be, so it's done!

Still some weird image warping and blurriness, but hey, I can still play the game and that's more than I could say a year ago.

Thanks for all the help Shawn, you the best! Here's some poor photos of the screen working.

lilshawn:
honestly when you play a game, you won't notice these things. you won't notice if the corner is a little fuzzy, or the side is not quite straight... you are looking at the action in the middle... where the image is like 90% perfect. not much happens in the 50 - 60 % regions and you aren't looking at them except for peripherally.

flat and near flat tubes are notoriously hard to get "perfect".... especially with how short they have to make the tubes to not make them a mile long to get perfect geometry easily.

you basically have to get it "good enough" or "as close as you can get"... or even "split the difference".

think about this... look at the back of your tube... imagine an electron traveling at about 300,000 kilometers per second out the color gun and have to make a hard 50 degree left turn to get the edge of the monitor and hit a target the size of one of the CRT's pixels... then another electron... but at a very slightly different angle to hit the pixel next to it..... then the next time, slightly different again for the one beside that one...do this 196,605 more times to make a picture.... then do all that again 59 more times... then do all that in 1 second. that is somewhere in the neighborhood of 11.8 million voltage adjustments to the deflection yoke... per second. That's a lot of switching and adjusting and compensation... just to get a straight line.

it's REALLY hard to get things perfect without sophisticated computer controlled switching... even then it's not "perfect".

our eyes have been sullied by the perfect squareness of LCD manufacturing and the super bright displays of plasma and LED backlit displays. everyone has forgotten what a CRT actually looks like when trying to draw something at the speed of light.

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