Diode identification

gonzo

gonzo

Well-known member
My old phase 90 is shorting out, and I can clearly see a diode sparking. It's this one labeled 744. Is that a 1n744? Can't find a reliable schematic. I have a 1n 5239b

A 1n4002 and 1n4148 as well. If it's just the power protection, does it need certain specs? IMG20260722154936.jpg
 
Last edited:
Looks like it could be 1N4744 instead, which is a 15V 1W zener diode. That 1N5239B is rated at 9.1V 0.5W if I remember correctly. I would pull the diode to confirm the part number.
 
gonna guess as it’s right after the 9v supply it’s just a random shottky they had on hand, is the next diode in line identifiable as a 5.1v zener?
 
Last edited:
Yeah, it just say 744 on the side. Took it out. The 1n 5932 works for now, but it's rated at 9.5?volts I believe. Chance of blowing again? Never had one just randomly go out. It's an over 20 year old pedal.
 
Nostradoomus said:
gonna guess as it’s right after the 9v supply it’s just a random shottky they had on hand, is the next diode in line identifiable as a 5.1v zener?
Click to expand...
Yeah it's right after the power jack. I couldn't seen a number on the next diode, but it's fine. Not shorting out.
 
You must log in or register to reply here.
Back
Top