mkstewartesq
Well-known member
Working on trying to revive an old Digitech pedal (to the extent I can within my abilities). While it is 90% SMD (definitely beyond my abilities) the caps and certain other components are through hole.
I suspect that the problem is that someone plugged the pedal into the wrong power supply so I’m focusing around the power jack. Edit to add – the pedal is not completely 100% dead – the LED lights very dimly and there is very very faint sound, but it’s so quiet I can’t even tell if the effect is working.
Nothing on the board appears to be burned out – but I can’t for the life of me figure out what these two components are (L1 and L2). Since I don’t know what they are, I don’t know if they look normal or damaged – but since the pedal’s already in the morgue, I might want to try to replace them just to see if it makes any difference. But again, I can’t even tell what the hell they are.
Here’s the schematic symbol (something I’ve never personally seen before) - and the BOM on the schematic just identifies it as “IND FBD 70 OHM @ 100 MHZ RIC200 TA”:
and here’s a couple of pictures of the actual part on the board.
Any ideas? Thanks in advance.
Mike
I suspect that the problem is that someone plugged the pedal into the wrong power supply so I’m focusing around the power jack. Edit to add – the pedal is not completely 100% dead – the LED lights very dimly and there is very very faint sound, but it’s so quiet I can’t even tell if the effect is working.
Nothing on the board appears to be burned out – but I can’t for the life of me figure out what these two components are (L1 and L2). Since I don’t know what they are, I don’t know if they look normal or damaged – but since the pedal’s already in the morgue, I might want to try to replace them just to see if it makes any difference. But again, I can’t even tell what the hell they are.
Here’s the schematic symbol (something I’ve never personally seen before) - and the BOM on the schematic just identifies it as “IND FBD 70 OHM @ 100 MHZ RIC200 TA”:

and here’s a couple of pictures of the actual part on the board.


Any ideas? Thanks in advance.
Mike