Whoops
Switched on my B4 for the first time. Got 8 leds, then 4 outside died, followed by the inner 4.
Q7 and 8 were hot.
The value for Q7 + 8 printed on the board, are not the same as BOM specified.
Looks like ebc are reversed on BC547(bom) vs BC546(board)
What do Q7+8 do? and what will have been damaged by their reversal?
Should I just turn them round, or replace them? How do I test them?
Paul
Switched on my B4 for the first time. Got 8 leds, then 4 outside died, followed by the inner 4.
Q7 and 8 were hot.
The value for Q7 + 8 printed on the board, are not the same as BOM specified.
Looks like ebc are reversed on BC547(bom) vs BC546(board)
What do Q7+8 do? and what will have been damaged by their reversal?
Should I just turn them round, or replace them? How do I test them?
Paul