Quoted from Hillel:I would agree with you Brijam on the blown transistor, except that whatever I did with that particular clip (J118) merely left the lone wire in that clip unattached to any pin what so ever, resulting in the engine no longer shaking. (I was following the instructions from the light bulb vendor, but previous owners or techs may have altered the original wiring for that clip-IDK). This disconnect of that wire/static LT-5 engine, had me repeatedly using the test buttons which eventually simply stopped working without my touching or changing any wire connections. Having no way of running tests any longer, I merely retraced my steps, reattached that clip with its lone wire to its original pin which restored the engine shaking again. I then used a different source of power for the LED light strip. So the game works great now, however I am left with control panel buttons that no longer function. It is not cause for immediate concern as I mentioned before, until the day comes when I want to change the settings, or the double AA batteries die and I am left with the original default settings and no way of changing them. As far as I know, I indeed may have blown a transistor from the repeated overuse of the control buttons or something else (the fuses check out OK). However determining which transistor or circuit board exactly, is somewhat beyond my current knowledge base, but I am naturally always willing to learn. I truly appreciate everyone's input and willingness to help. Seems to be a common trait with Corvette owners, whether it be the American sports car or the pin. Thank you.
Check J205 - is it loose or are there burned contacts?
There could be any number of issues though, here is a very thorough discussion on what to look for:
http://www.pinwiki.com/wiki/index.php?title=Williams_WPC#Direct_Switch_Problems
You should do something about your on-board batteries. Preferably upgrade to NVRAM or at a minimum locate the batteries off the board.