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Thanks again, guys - found it, now all switches are working as they should. Teeny little pins for these 60 year old eyes!

Much appreciated,

Mike where would I look for a short on the Switch D input? All switches are showing proper changes on the monitor screen except for D, seems to be stuck. I'm assuming that's probably another solder issue that I need to resolve.

Success! Found a solder bridge between two of the pads on the micro, up inside the row of pins on the chip. I didn't count pin numbers, just added a little solder and used some wick to draw it out. STM32 bootloader popped right up on zadig, installed the driver, and now have openTX 2.2 loaded on the...

Thanks - I'm not surprised. I may take it to work where I've got hot air soldering and a Mantis magnifier to look it over a little more carefully.

Now zadig is reporting an "unknown device" as well as the webcam device.

When I select "unknown device" under driver it says "none" -

I am getting to really dislike computers....

tried with and without the battery, with and without the SD card, and no joy yet. I must be missing something.

Is there a driver I need to get from ST to get this thing started up? Or am I likely looking at a new main board?

OK - so I got the new processor chip, carefully cut all the leads, cleaned the pads, and installed the new part, paying careful attention to orientation and alignment. Went over all of the pins with a 10X eye loupe, insuring no shorts, no unsoldered pins, etc. When I try plugging in the USB port wit...

that's the markings on the one I have in the board - found it on digikey, just over 11 bucks. Worth a shot.

it's deader than a doorknob.. so I guess I'll order a part, and this time I'll UNHOOK the battery before messing with it!

Thanks, Mike

OK - so I may have damaged the processor in my taranis plus, not sure but I may have left the battery connected when disconnecting the ribbon cables to repair a stuck pushbutton (the enter button). Radio now won't turn on, no backlight, nothing. Charger does appear to work still, it blinks when plug...