Bug #3251
closed
osmo-e1-xcvr: R1 doesn't connect to GND?
Added by laforge almost 6 years ago.
Updated almost 6 years ago.
Description
it seems at least on Dieters' board the GND end of the 3kOhms R1 was somehow not connected to GND. If that connection is manually created, the board consumes >= 50mA more current and the red "LOS" LED shows up at start.
- Related to Bug #3248: osmo-e1-xcvr fails to talk SPI added
i did some measurements and the pcbs seem to be buggy.
there are grounds missing inbetween multiple parts, but R1 not being connected to ground is the only known 'missing trace' so far.
fix:
add a piece of copper enamel wire from C4 connector side to R1 connector side to connect R1 to gnd.
one can use the same the same wire to run gnd to pin44 of U1 as well.
- Status changed from New to Resolved
- % Done changed from 0 to 100
some pcb production issue. Design files are correct, so future batches will unlikely be affected.
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