Well another weekend has gone by and my tinkering has caused another device to (potentially) bite the dust. I've been playing around with a couple of Slingboxes, an M1 and a 500. Today was the M1. I had taken it apart (quite easily!) and poked around with my continuity and voltage probes with results as below for a few locations (see image).
Gnd means continuity existed between the tested part & the metal shield. The voltage in yellow is the voltage while it was plugged in. The spot in the upper left has a voltage that fluctuates somewhat erratically esp earlier on in the booting process.
full size image at https://dl.dropboxusercontent.com/u/23091/m1/front.jpg
I hooked up a serial to usb and ran minicom on the "chatty" one noted towards the top left.. and got a bunch of garbled garbage. Ran baud rate and it cycled thru various baud settings but didn't find anything that made sense.
and so on. Tried the other ports as labeled, and nothing else had any "chatter" on minicom.
Update Well I started touching the read probe on various other points on the board. One chip on the right generated a few (but not lots) of random looking data. And as I was touching a the prongs of the chip on the left above the smaller shield, the LEDs on the board turned off and it stopped generating any output. Sad. It won't turn back on or do anything at this point. Can that happen just from touching two pins on a chip?
Any ideas how to repair this?
Pretending I didn't fry the board, any ideas on what I could've done differently with minicom?