railwarrior
Active member
I have a System 1 cab with the AR III board. Someone had added a switcher and tied into the harness to feed 5vdc in 2 places. Recently, it stopped working in the middle of trying to convert to another sys 1 game. The 10.3v was only putting out about 5vdc so I picked up a rebuild kit from Bob Roberts. R20 already looked burned, so I thought that is why someone hooked up the switcher to provide 5vdc. I 'rebuilt' the AR III. 10.3v now reads 15 vdc. My next step is to replace R20. What's going to keep it from burning up R20 again, if the switcher caused it to burn (or was installed because it was already burned to provide 5vdc)? Is there no 'sense mod' for this board?