CRT broken pins in neck

sosage

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I got a couple K7000 chassis back from the excellent arcadecup. I get to putting back together a very troublesome monitor when, while examining putting the neckboard on, I discover what was likely the culprit for this tube not working right. Not only were some of the pins bent, but it looks like a few are missing. I guess the previous owner wasn't kidding when they said, "it's having weird monitor problems".

Is this the kiss of death for this tube or is there a hack/work around/fix for this issue?
 
If you actually have the pins, you may be able to repair it. I've had good luck using conductive epoxy to reattach the pins (I used the stuff for car rear defroster repair). I just take the pin out, then put some conductive epoxy on a toothpick, spread it around inside the hole, of course making sure to get the stump of the pin that's remaining. Then put a little bit on the pin itself, then stick the pin back in the tube. Then I use a hair dryer to help it cure faster, but then wait a day to fully cure.

This of course assumes that the entire pin is pulled out of the tube, not just broken off shorter. You need the hole in the tube to hold the pin in place for this to work.

DogP
 
If you actually have the pins, you may be able to repair it. I've had good luck using conductive epoxy to reattach the pins (I used the stuff for car rear defroster repair). I just take the pin out, then put some conductive epoxy on a toothpick, spread it around inside the hole, of course making sure to get the stump of the pin that's remaining. Then put a little bit on the pin itself, then stick the pin back in the tube. Then I use a hair dryer to help it cure faster, but then wait a day to fully cure.

This of course assumes that the entire pin is pulled out of the tube, not just broken off shorter. You need the hole in the tube to hold the pin in place for this to work.

DogP

*sigh*...that's what I thought. Thanks for the reply. The missing pins appear to be pretty much gone. I've reached the breaking point with this hobby and monitors anyways (three chassis repaired, all three having issues related to their tubes...frustrated beyond belief).
 
Well... you could probably pull pins out of a free dead TV from CL, or a bad tube.

DogP
 
The missing pins appear to be pretty much gone.

Pin count..... sometimes there are spots that "look" like there is supposed to be a pin, but there is not. Just to be sure ya know.

@DogP - Do you have a source/part number for that conductive epoxy? I had a project recently that something like that would have been ideal for. I've heard of it before, but never tried any.
 
@DogP - Do you have a source/part number for that conductive epoxy? I had a project recently that something like that would have been ideal for. I've heard of it before, but never tried any.
I've used this stuff for a few things before, and it works: http://www.radioshack.com/product/index.jsp?productId=3964901 , but I used this stuff for the CRT: http://www.windowfilmsupplies.com/prod/defroster-repair-kit-247.php , which I picked up at Advance Auto Parts (most auto parts places should have it). I think this works better because it comes in a bottle with a brush rather than a pen with a point.

DogP
 
I've used this stuff for a few things before, and it works: http://www.radioshack.com/product/index.jsp?productId=3964901 , but I used this stuff for the CRT: http://www.windowfilmsupplies.com/prod/defroster-repair-kit-247.php , which I picked up at Advance Auto Parts (most auto parts places should have it). I think this works better because it comes in a bottle with a brush rather than a pen with a point.

DogP

Thanks. I'll have to round some up and play with it a bit.
 
Just an update, it is 9 pins with an obvious gap between two of them. So either I somehow have 1 pin too many or I am 1 pin too few. :p

A problem I have with one of the other monitors is that there is no picture, but the tube is shooting a burst of RGB towards the center of the tube. Like a small blurry flower. Tweaking all the knobs on the chassis doesn't really do much outside of making the blur tighter or a bit more spread out or bringing the colors in and out. I should have taken a picture. :(

My first reaction is that, well, at least I know the RGB guns are firing...but I have no idea where to even start with tracking down this issue. I'm not even sure which is the culprit, the tube or the chassis.
 
Just an update, it is 9 pins with an obvious gap between two of them. So either I somehow have 1 pin too many or I am 1 pin too few. :p

Are you counting the focus pin, inside the plastic thing? What's the condition of the plastic keyway on the tube, is it all mangled and broken?

Usually there tend to be 8 pin and 10 pin tubes... 9 pin, not so much.

A problem I have with one of the other monitors is that there is no picture, but the tube is shooting a burst of RGB towards the center of the tube. Like a small blurry flower. Tweaking all the knobs on the chassis doesn't really do much outside of making the blur tighter or a bit more spread out or bringing the colors in and out. I should have taken a picture. :(

Did you plug the yoke in?


Also, if you have a bad tube, you can usually use one from a television set. K7000's are kind of known for crappy tubes.

-Ian
 
A problem I have with one of the other monitors is that there is no picture, but the tube is shooting a burst of RGB towards the center of the tube. Like a small blurry flower. Tweaking all the knobs on the chassis doesn't really do much outside of making the blur tighter or a bit more spread out or bringing the colors in and out. I should have taken a picture. :(

I'd check the yoke... make sure it's on the tube properly, and that it's the correct one for the chassis.

DogP
 
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