I posted this earlier, been working on two different pins, a Williams Cyclone and a Gottlieb Extra Ining. So here is a correct plea for help.
Well I just got around to checking out the Williams Cyclone I picked up last week. The prior owner said it lite up put would not play. The first thing i did was remove the old battery hold and replaced it with a new external holder. Checked all the fuses they tested good. Check all connections and looked for any damage on the boards and circuits. Everything looked go so I plugged it in. Turned it on and began the tests procedure. That's where the problem showed. The message read "U25 RAM Failure".
Reading up on this, it appears the U25 RAM is bad. I would like to replace it with a socket ram. Has anyone replaced a U25 with a 6264 NVRAM Module. Read where you won"t need the batteries if you use this. Comments and suggestions need. Should I send it out for repair, or try doing it myself? If I send it out, who does good board repairs.
Kickout