Hi. I need help identifying a diode. For context, this is on a small digital drum machine without a schematic available. It was damaged after the incorrect power supply was connected. It takes a 12VDC power supply of at least 300mA.
The diode is blown apart and the unmarked anode end connects directly to the positive power input. The cathode goes to ground. It’s about 1.7mm long and 1.4mm wide. It has a marking that says B1.
Hopefully this is enough info to find it? If we need more clues and “B1” isn’t enough, there’s a power stage that has a 78L05 and a 78L06. I can hunt more in that area if that helps determine what specs the diode should have.
Thanks for any help.