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.jpg
https://i.imgur.com/lj274W7l.jpg
It 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.
I understand that, however this unit does not perform as intended, which is why I contacted bitmain. This unit runs quite well for a few hours then performance decreases to a seemingly arbitrary rate. I've had it perform anywhere from 9 to around 140 Gh/s. The only way for me to fix this is to cycle the power.