the reason everybody just posts everywhere about fixing touch machines is that the JVL company has basically abandoned the videogame market and chooses to focus on casino gaming. short of cursory access to a manual or CD, there is basically no support left except for private 3rd party companies.
if you need repairs that are out of the scope of your abilities, you can make a post here explaining what you got, what it's doing (or not doing) and i'm sure someone here can sort you out. (i have not checked your history to see if you've posted previously about it or not... just mentioning it for the sake of inclusion)
if you've exhausted what you can find, I suggest people contact some of the amusement game operators (jukboxes pooltables etc) or videogame repair companies (xbox playstation repairs etc) in your area and see if anyone might be familiar with the machine enough that can help you with your issue. lots of companies will repair stuff for you... for a fee of course.
That said, the main companies ignoring your e-mails is an all too common issue. I, myself, am a technician for an amusement company (several in fact) for the last 16 years, and the amount of e-mails going to dead e-mails/no response is huge...not to mention the replies I DO get are only about 50% of the time actually helpful and the other 50% of the time responses containing the likes of "unfortunately" and "unable". Even phone calls often end up with leaving messages on a voicemail that fall on deaf ears. I mean, it's not like i'm some random joe schmoe off the street... i'm a company... using your product .... contacting you, potentially with an issue.