Galaga upright g07 cbo monitor problem

whatchitfoool

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Galaga upright video pcb problem (g07 cbo fixed)

so, im working on a midway galaga full upright. this is a friends he just got, so its his dime and at his house. ive got a monitor problem (besides the small character issue [that maybe ill ask about later if i cant figure out] ).
its a g07 cbo. ive work on a few of these before, never had to much trouble. DOA, so i put in a new flyback, hot, reg, and HW coil. + about 1/2 the elc caps, as acouple near the HW coil were visibly bad upon inspection. (had the stuff around, or id of just done all the caps). tried it again, heard it wind up - and nothing. turn it off, hear it wind again and dead. (so the HV was turning on before it went into shut down).
i pull x701, and sure enough it comes on. with b1 around 155 and b3 around 158.
so i start looking over everything in the 900s. replaced:
x04 (gagin)
x501
ic 501
x901
x902
r909 (2k pot)
r 908 (47k)
c905 (again)
pulled a leg and checked:
r903 (4.7 ohm 3W)
r904 (10k 2W)
r910 (2.476k)
FR 901 (220 ohm)
907 (33k)
r01 (220, 25W big fat white one)
? cant remember...(the other large 7W resistor on the PCB under the 25Wer)
looked at all the ceramic, no shorts
no cracks or solder bridges, everything seems to have a path to where and only where it should.
still into Hv shutdown, works (poorly) with x701 pulled.
looked and tested all over the 900s at least twice, but above is only what i can 100% remember i did.

anyone have any help to offer?
 
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You didn't hook up the VR backwards, did you? I did that once and had similar voltage readings on both sides...
 
well, its kind of hard to... as if you do, the base and emmiter touch and short to case. ill triple check in a few hrs.
 
If you swap the wires around though...

Yes, this is what I meant. Not put it in backwards, but hooked it up backwards.

Here is how it should be connected:

g07r-15.jpg
 
this problem is driving me crazy. its just making me bang my head against the wall.
looked over everything again, i havent found anything wrong.
 
yes, i have a white wire going to one end of the resistor to the same pin and the other end to the board.

i do not have another game at this location to test with; whats your thinking? bad isolation trans?
 
so about Wednesday i started rechecking parts. got around to metering the VR. turned up bad. looked at the other 2 i had in its place, they were also bad. of the (3) i used, 1 was a possible not working and the other 2 known to work.
so i ordered a new one, and a cap kit sense i was paying shipping anyway. i got the parts in, swapped the caps that i didn't replace yet. (1) was bad. none were shorted or anything, but i dont think the bad one was storing too much. put in the voltage regulator.
tested the monitor. came on. fiddled with B+ adjust and got it to alittle over 120 dc. so it is now working and lookin good.

but i still have the video problem with some of the characters being split and showing up twice...

(here is a video. way better then a text description)
http://www.youtube.com/watch?v=AH5eEVuNxOY

the ram has been changed to 2148's (well 49s ). no sign of unrepaired broken traces...
problem def on the video board.

anyone have some ideas?

** moved this over to here ,http://forums.arcade-museum.com/showthread.php?p=1398726 , in the general section. **
 
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