Is It Possible To Fix A Broken Neck?

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I just picked up a TMNT that seems to be in pretty good shape, except the previous owner managed to snap the neck off of the monitor while moving it. Basically the back of the arcade game gave way and the monitor did a pile driver right into his dolly. I know that I can replace most parts on the monitors to get them working again, but can't really figure out a way to reattach this thing. Does anyone know if it's even possible to repair a broken neck or is this K7000 destined for a graveyard? I can always use the chasis and frame, so it's a not a complete loss, but monitors in the bay area are harder to find then the actual games, so I'd like to save this guy if I can.
 
OK picture time.

did it break the tube it's self
or
just the neck board.

if it broke the glass tube no.

if it just broke the neck board that goes on the tube yes.

Peace
Buffett
 
If the tube broke, start looking for a cheap/free TV to swap from...
 
It's the actual neck itself. It looks like the neckboard and yoke are salvagable, but I have a sinking feeling in my stomach that I'm about to have another game missing it's monitor. Here are the gory pics.
 

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yup that tube is boned.

start looking for a used tv so you can transplant the tube in your frame.

wile you have the chassis out do some general maintenance on it.
cap kit, fly, re-flow.

that way it will be ready for your new tube and look it's best.

also re-flow the entire neck board.
it was probably damaged in the accident. and check all the traces to see if there is any broke due to the collision of the neck to the hand truck.


Peace
Buffett
 
Thxs for pointing me in the right direction, sounds like I'm about to learn how to swap out my first tube. Should be a fun experiment. At the very least it will be a learning experience
 
Thxs for pointing me in the right direction, sounds like I'm about to learn how to swap out my first tube. Should be a fun experiment. At the very least it will be a learning experience

no prob good luck and Happy hunting!!

Peace
Buffett
 
K7000 25" tubes are pretty easy to find! 1 out of 3 is usually a direct swap with original yoke.. Just need to change connectors.. Look for 1990s black plastic case 25" tvs.. Look through the vents and check for a skinny neck.. Also check the model number on the back, it will need to say 25 somewhere.. Don't bother with sony and or any flat tubes..

Good luck! Wish you were closer, as I have 30+ tubes ready to go!!
 
K7000-25 inch monitors do not have a skinny neck. Only the 19s. (Although there are some 19s that use the wider neck)

There are tons of 25 inch tubes that will work. Just a matter of getting one that has the same yoke values. If you dont, you can always swap yokes.
 
So after finding a free TV on Craigslist, I was able to complete my first tube swap. For the most part things went pretty smoothly, but the chassis had to be moved further back because the new CRT was a little bit bigger than the tube that was originally in the Turtles game. Before putting it back in I check each capacitors with a cap analyzer and replaced two that were a bit weak. The game seems to play fine now, but I am having a couple of issues when doing the convergence. I was able to get a solid green screen using a monitor pattern generator, except in the top upper corners it was slightly blue no matter which way I adjusted the yoke. I degaussed the monitor with an external degausser both before and after I was done, but it did little to help.

I was wondering if this is normal, potentially an issue with the flyback or one of the other caps that I didn't replace, or if there's a way for me to verify that the new tube isnt' what's causing the problem?

I also have the horizontal adjustment potentiometer, all the way turned up and it barely centers the picture. For some reason I feel like I should be able to keep the horizontal pot at medium level so that I could make adjustments right of left to it, if need be. Finally, at the very top of the screen, it almost looks like the screen bends slightly.

None of these are anything that really distracts from the game, but on the test screens it's pretty obvious that it's not perfect and even in the game, there are certain screens where you can tell that the colors look washed out in the top corners. The bending screen on top, almost makes me think that I missed a bad capacitor, but before yanking the monitor back out or super gluing the yoke into a permanent spot, I wanted to see if anyone had some tips on improving the picture or if there's a way to check compatibility between the old chasis and the new monitor. Also, is there any advantage to keeping the yoke from the old TV? My understanding was that the Yoke is synced to the chasis and since I'm going to be using the old TV chasis to let one of the neighbor practice desoldering so he can learn to fix his arcade, I wasn't sure if it was useful or not. I do have other 25" monitors missing their yokes, but for some reason didn't think I could just pop it on and expect it to work.
 
You'll need some convergence strips to fine tune the edges. Look for my pacman cocktail restore thread, I have some details you might be interested in. They slip under the yoke and stick to the tube. Check your old tube, it may have some stuck on it still. You can't buy them anymore, but you can make them in a pinch.
 
Thanks for the advice, I didn't even think about the strips. I'm going to try to steal the ones that were on the original monitor and see if that helps. Also a great idea to put the felt on your Pacman, I feel kind of dumb now for spending $20 on a set of sliders when I can just add felt to the feet of all my games. Did you just use a glue gun or is there a better way to attach them?
 
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