Sounds like you have it connected right. If you have a 2nd 12F683 to test, and that one
won't program either, I would contact MeLabs support directly.
The only problems I'm aware of on the older 840Z 03221 ZIF adapter series were for 18F
parts which required a modification for AVdd connections to pin #7.
One other thing to check... if you've already programmed the chip once. Make sure your programmer is set to high voltage programming.
Problem solved. I downloaded Beta Software for EPIC™ Programmer, including the update for the firmware and the programmer works great now. On the download page, there is the following statement "It does not support the advanced command-line switches of the paid upgrade." I don't know what that means for me.
~ Dave
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