I started an application with Irda when one Primer II brutally dead. It seams the U9 regulator because I measure 0V in output. I used another and same problem ! What could happen ?
I read some topics about "ressurected" Primer II but It seamed more an software than hardware problem.
May be you got some problem with your software, and your program lucklessly shutdowns the Primer. First, try to program your Primer while pushing the joystick button in order to force the power on.