Build Your Own Arcade Controls Forum

Main => Monitor/Video Forum => Topic started by: mclovin on March 13, 2019, 01:09:48 pm

Title: WG K7500 width pot
Post by: mclovin on March 13, 2019, 01:09:48 pm

Hello, just trying to adjust the width on a k7500 and when I adjust the pot on the remote board, it doesn’t do anything. Just wondering if I should replace the pot before doing a cap kit?

If so does anyone know what type of pot I need to purchase? Thanks

Title: Re: WG K7500 width pot
Post by: lilshawn on March 13, 2019, 10:20:13 pm

nope. i can count on one hand the number of pots i've replaced...and it was because they got dropped and broken. some of the REALLY old u series and 7400 chassis had substandard pots that need replacing, but the 7500 should be just fine.

replace big non-polar cap, its like 2.2uf 50 volts...something like that. that's the main culprit for no width adjustment. but you may as well change them all.

Title: Re: WG K7500 width pot
Post by: mclovin on March 14, 2019, 10:36:05 am

Yup that seems to have done it. The bipolar 10uf 50v was measuring over 14uf. Oddly enough I measured the 5k pot and it didn’t appear to be working on the bench but I put everything back and it’s good now.