First of all... I would like to thank you for posting the list of transistor voltages for a normally working uBitX. I note these are for the version 4 but would I be right in assuming that the version 5 would be similar.
I think I have also managed to kill Q90 so this topic has given me the means of checking it out. It is O.K on receive but no transmit. (Don't ask how I managed to squirt a bit of RF into it although it was switched off !)
I see a number of test points (TP) on the board and on the schematic. How would they be used and has anyone any idea of what we should find when using them ?
Thanks for all the time and help given to aid those who are in need of advice around the uBitX.