Ernesto Corvi

I would start by lifting very carefully one chip at a time, and re-seating them. Make sure you don't bend any pins in the process, and that the chips seat properly and make good contact. While you're at it, check the solder joints on the boards for anything that looks like it's loose. I actually have a few questions for anybody that owns a real Spy Hunter arcade machine. In most of the remakes (ie: www.midway.com), there's a humming engine sound while you're playing. I was wondering if this sound was present on the real arcade machine, and if it is, which speaker is it coming from? The SSIO (sound effects) speaker, or the CSD (music) speaker? Also, which sounds are played during the attract mode sequence? Listening to MAME won't do. I need to hear it first hand from a real arcade owner. Thanks, Ernesto.