Konami Viper jurassic Park 3 Help

[olum64]

Hello people looking for help for my konami viper jurassic park 3

a manual would be helpful

I have problems with the sound of the 2 player, the effects are missing like shooting

greeting

 

[stj]

if you find any technical info, please post it.
i have a couple of viper units with no video output and there does not seem to be any tech documents available.