WP 34S will not turn on

[brettpim]

I got my hands on a second USB to serial adapter and tried again with that and still no success. I was able to test the adapters in two ways:

1) using RS232 mini-tester I saw the transmit light go on when I ran

wp34sflashcmd calc_xtal_full.bin /dev/ttyUSB0

2) using both cables, I was able to send and recieve signals miniterm.py

So I think the USB to serial adapters are good which would seem to indicate that it is the calculator that is having problems. Does anyone have ideas on how to start troubleshooting the calculator?

thanks