K7500 Horizontal width wont adjust

AlucardXP

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Like the title says, I have a K7500 from a blitz cabinet. I recently got around to actually using the cabinet for a different game and I need to adjust the width of the horizontal but adjusting the pot on the control board does nothing. Ive even changed the pot with nothing. Anyone run into this problem before or can point me in the right direction to fix this?
 
There is a transistor mounted to the frame on the back right of the chassis. It should have a connector to it. if not, then that's why it won't adjust. if it's on backwards, it won't adjust. if it's not there, you MIGHT have a version that has it on the board, but if you have a couple wires with a 3-pin connector on the end, then you're missing the transistor....
 
Yeah I gotta feeling the transistor is shot. When I originally got the cab it was barely mounted on the bracket that's attached to the tubes frame. I took it out and moved it to a heat sink that was on the chassis but may of plugged it in backwards. Or it may of been shot in the first place. I never had to adjust the width until now so I don't even know.
 
Hmm then there goes my idea. I gotta test it. Both resistors looked good. Didn't pull them to test them tho. Found one of the other transistors in the circuit near where remote mounted one but couldn't find the other. Didn't check the cap either since my tester isn't home and I don't have any caps aroud that size to replace it. I'll look more into it tomorrow.
 
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