Posted by Matthew C. Waterman on 16, 2001 at 7:44 PM:
In Reply to: Bizarre keyboard PCB - minimal solder joints, no chip - help! posted by Ryan Mannion on 16, 2001 at 6:09 PM:
Your microchip is under that black lump. What about at the place where the flimsy touches electronics. Are there copper connections there? If so you can scrape off the black stuff and solder onto that.
: I am a complete electronics newbie, so please excuse any mixup of terminology and the like. I am attempting to build a few hand buzzers for "You Don't Know Jack" per the instructions at http://wrongcrowd.com/~arcade/ydkjp2.shtml. Unfortunately, the keyboard I'm using does not use any sort of microchip on the PCB, and thus there are no solder joints to connec to. What I see is a circular black lump on the board that a number of "tracks" (the etchings in the PCB that I guess are analogous to wires) are connected to. Is anyone familiar with the type of keyboard I'm describing? Is this keyboard hopeless?
: Thanks in advance for your help.