Hey guys,
   I'm really new to the whole mame scene, but I've encountered a serious problem now that I'm towards the end of my build.  I decided that instead of doing the keyboard hack I would order a keyboard encoder(Ipac like).  I decided on the 3tronics 24-input keyboard encoder.  Now i started by daisy chaining all the grounds, and I used a continuity tester to check to make sure all the grounds were wired.  Then i wired up player 1's side of the control panel and decided to test it before i went any further.  Much to my dismay now the buttons are unresponsive and the keyboard connected to the pass through is not working.  I tested before to make sure it worked by hooking the encoder up to the ps2 keyboard port taking a wire to pin 26(ground) and the 5 key on the encoder and pressed them together and it put a 5 on the computer so it was working.  Is there any reason why this is happening, or any thing i can do about it.  I can make a video or link to the products ebay page if needed.
Any help would be greatly appreciated.