I recently received an S1 which is missing a cap from
every pair. It looks like they were just never there. I still haven't heard back from bitmain yet. Does anyone know where we can purchase replacements? As close to these as possible is preferred.
https://i.imgur.com/lj274W7l.jpgIt is very well possible these were 'NOPOPs',
parts that were not ment to be populated
on the board.
Sometimes after testing a design, it turns
out some parts can be omitted without
decreasing the performance of the circuit.
Parts are then not placed during production
in order to save a few bucks.
When the solder on the pads looks nice and
regular, there were never caps on that location.