Originally Posted by
Tankhobby
Fixing a PCB without a schematic is tough. I've attempted that a few times but now with surface mount and proprietary programmed parts it very tough. I would guess there may be a common failure mode if several boards are failing in the same manner. Identifying that bad component or circuit may lead to fixing many of these failures.
Has anyone fixed a board?
If you can identify a chip or chips on the board you can look up the pin out and test to see if there is voltage by measuring between the ground pin and "VCC" or the power connection. Also check to see if there is a short between the positive and negative where the battery connects. I have also seen failures due to bad solder connections or cold solder joints. These can be hard to find, connect power and carefully flex the board, it may power up. If the board is dead you don't have anything to loose.
Thats all good info, thanks, I may try the flex, although the board is pretty rigid, the board has more microscopic pcb then the phone book has names, so I think by the time I looked up all the pinouts and tested each, I would just buy a new board, Also another thing is, I can’t really even tell if I’m bound to the board- I have done the binding procedure and the transmitter seems to bind( as led goes solid) but nothing on the board operates to even tell me if bound, and it has no led on it itself. How and where can I test to see if I’m at least bound on the board?
