wg 4600 horizontal sync not working but vertical okay

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wg 4600 horizontal sync not working but vertical okay

i pulled a wg4500 out of my galaxian that was junk and put a 4600 in from a frogger that i had and probably needs a cap kit, but i put my mt830a pattern generator on it and the long vertical lines are good and solid but the short horizontal lines are very fragmented and scattered and the pot doesn't fix it. seems like it won't sync. any ideas or should i do cap kit first or what should i check when doing cap kit?? my B+ is 129.7 also.
thanks for any help.
 
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The 4500 and 4600 series monitors were wired differently as explained on pdf pages 45 through 51 of this manual:

http://arcarc.xmission.com/PDF_Misc/Midway Service Notes 2.pdf

Also, there are different connector pinouts of the video interface card used in the 4600 series so be sure it's wired properly for the particular card installed in your monitor:

http://www.ionpool.net/arcade/tech/19K4600_pinout.txt

Naturally, since the 4600 series monitors are now over 30 years old, I assume you will have already recapped it.
 
i will check in the next couple of days and see what cards it has and also it is due for a cap kit and i wanted to know what else might be a problem component so i could replace at that time.
thanks ken.
 
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