I have two 9 controllers and 1 7 controller. One 9 would not work. Took it apart and tapped the kepad mylar button area with a screw driver and it started working. Reassembled everything and all is good. All buttons.
The other 9 works great no issues. Then today started acting up. Took it apart and noticed the start pause and reset had gold round foil buttons on it. Wanted to see what revision it was. So that is why I took it apart. It was also a 9. So I have 2 9s now. Anyhow after putting it back together (* , 7 , 4 , 1) no longer work. Not sure why.
And the 7 works great except the start pause and reset. And fire buttons never worked either. So took it apart and took out the mylar and saw sticky stuff on the fire buttons. Tried to scrape it off but couldn't. Got frustrated and gave up. Put it all back together. Now fire buttons work. Not sure how they started working. But at least super breakout works now and so does Galaxian.au Pole position never works not sure why even if I squeese really hard on the fire buttons on any controller but jungle hunt does great. And also(* , 7 , 4 , 1) no longer work on the 7. Not sure what happened.
And I have 1 wico with custom y cable baught from bohoki (twothousandman) on ebay.