g07 CAO transistor equivalent question

tron guy

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so I'm working on a g07 CAO.

i got it working but it has no blue. someone has messed with this before it appears.

I currently do not have blue. Neckboard transistors good.

The little remote video board is missing Q209 and Q210

I looked at a close up of the manual and they appear to be populated as well as being in the parts list:

part # 14-802-12 is what the parts list calls for, for both Q209 and Q210. The schematic appears to have Q209 as 14-856-32.

I'm assuming I have equivalent parts on hand, but could use some insight as to a proper replacement.
 
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Ok , on bob roberts monitor ID page, Q209/Q210 are unpopulated:

http://arcadecontrols.com/BBBB/g07cao.html

Guess I will just test the transistors in circuit on that little pcb to see if that is the problem I am having with NO blue. I will report back. (Q203, and Q206)

I still don't know what the heck to replace them with if they are bad though.


edit: a little research leads me to believe a 2N3904 should work .
 
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all right, I looked at my notes from a chassis a few weeks back missing blue (g07 cbo)

After spending what seemed like hours pulling and testing parts and continuity, it ended up being position BK on the neckboard did not have continuity with a little spot on the same pad.

I ran a jumper last time, it fixed it, ran a jumper this time it fixed it.

all good. :)
 
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