Should be an easy answer for the monitor kings..

Pengo13

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Can I use the Q201 transistor (red color) from a k7000 neckboard installed on a 19" monitor on a k7000 neckboard for a 25" tube?

There seems to be a variation on the model #, but I'm not sure if they are both the same.

Thanks
 
Thanks for the reply. It didn't seem to work for me (maybe I did something wrong). The # on the transistor on the 19" neckboard is 2SC2068, however, the # on the transistor on the 25" tube neckboard is T Z 1034 114.

What is the part # for this transistor? It has a broken leg so I need to replace it. I can't seem to find it under the T Z 1034 114. Remember, this is the Q201 transistor (red color) on a 25" tube neckboard.
 
ok on one its got those odd tz 1034's on it.

three others have c2068's on them. They are all 10 pin neckboards on 25" wells k7000 monitors...
 
so basically it looks like those two transistors are one in the same with diff #'s.

are you sure the one you put in is good? are you missing a cloor or something? if ou are dont forget to check the header pins of the video input connector for cracked solder.
 
Could be solder joint around R207 on the neckboard, could be bad signal from game pcb, could be dead gun on crt, could be anything between IC1 and the input header, could be the cable from the main chassis to the neckboard, could be.....yeah, need a little more info.

If you suspect the transistor you put in being bad, just swap it with ANY of the others on the neckboard that are working to verify if the problem persists.
 
ok, I'll try a different c2068 transistor in the next 20 minutes. I'm pretty sure that I did everything right, but you never know. I'm wondering if mixing them up is the problem....

Just to see if I was doing something wrong, I moved the transistor for the blue color over to the red and red is now working fine. I'm going to guess that I have a bad c2068 so I will grab another now. I'll report back shortly.
 
ok, this officially sucks....

Just tried a different c2068 transistor without any luck. It seems that it wants the same weird tz 1034 transistor or it won't work. When I install a c2068 for a particular color the tube looks as if it was shorted on the particular color. The screen is saturated with that color and you can see the retrace lines.

Any ideas. I can install all 3 c2068 transistors and see if that would make a difference, but the mix of tz1034 and c2068 is not working. Not sure why.

Does anyone have a few extra tz 1034 transistors that you can sell me or tell me where to order them? I need to get this machine up and running as soon as possible.

Thanks for your help.
 
I'm sure you did this, but after changing the transistor, did you try turning that color down? I've seen people turn them way up when trying to figure out why it's missing, then forget to turn it down after fixing it...
 
I guess if it looks good when swapping in Q203, then that's not your problem...
 
I did before and it didn't make a diffence. It's strange. I'm guessing that the TZ1034 transistors have a different value or something. Or the neck board that has these types of transistors are a bit different. I don't know.

Do you have a spare that you can sell to me?
 
So we shoot the tube, it runs fine. Then the red is out again. I tell you to check the red transistor, and now look what you did ;).
 
the 2sc2068 doesn't have the same pinout as the tz1034 does - or at least according to the nte equivalents datasheets.
Good news is the nte equiv for the 1034 is a nte171
 
Thanks for the reply. Does Radio Shack carry these? If not, where I can get them?
 
Radio shack doesn't carry squat.

NTE parts are generally more expensive, but more readily available. I happen to have a local electronics store that stocks them, but otherwise try Mouser.com, DigiKey, MCM, or Jameco.
 
Ok, thanks. I'm also trying to get 1-2 of the originals from a fellow member.
 
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