#TIL Dead-bug soldering is an acceptable method to patch a production circuit board per IPC-7721. Awww, even looking at it is painful, there must be a lot of industrial horror stories behind these photos... #electronics
...and deliberately tombstoning an SMD resistor to install a mod wire to a production board is acceptable, too. From now on, whenever I do this I'll claim the board is hacked using the recommended industry standard technique. #electronics
...and the classic hack: stacking DIP chips on top of each other, lifting or cutting QFP pins for mod wires, are all accepted by IPC-7721 as legitimate methods for patching a production board. Interestingly, IPC-A-610 even allows stacked SMD resistors and capacitors by design, not limited to a modification.
Mod wires do have to follow some rules: secured by epoxy glue, not perpendicular to the pin, not crossing a component, and only a single wire should be used at a single pin. Also, zero-ohm resistors are acceptable pin bridges. #electronics
@niconiconi you can get pre-stacked capacitors too, if you look for really high capacitance C0G ceramics
-F
