What caused this? Really I would think that larger current from the wrong power supply did the trick. From what I saw the pedal doesn't have a zener regulator to protect it. This would actually be an improvement on Krank's part if they added it. Maybe I should send then an e-mail and share this idea with them. After switching out the DIP socket and a new LM386 the pedal sounds awesome. This repair job is a great example why adding a zener diode on the power supply input of the pedal can save money and the life of your guitar pedals.
Showing posts with label maximus. Show all posts
Showing posts with label maximus. Show all posts
Sunday, December 13, 2009
Krank Distortion "Distortus Maximus" Pedal Repair. Why isn't there a zener diode in this thing?
I got this pedal from a client. I had no clue what was wrong with it from my first inspection. I plugged in and powered it up. No sound when engaged. When disengaged I got a clean tone, but this is due to the true bypass switching! I haven't seen true bypass on a commercial pedal. True bypass has been done by guitar players and tone freaks to have an unaffected guitar tone when the pedal is disengaged. Once I opened it up I noticed that the main IC, a LM386 audio amp, was crooked in the DIP socket. A DIP socket!!! What?!? The major guitar pedal manufactures don't put DIP sockets in there electronics! Well this company goes all out in design. After removing the IC I see that the socket is completely damaged. It looked like it was melted. I assume that the IC got really hot, blew, and melted the DIP socket plastic. If you look close it's actually pin 6 of the DIP socket that is melted. Pin 6 on the LM386 is the supply voltage pin.
What caused this? Really I would think that larger current from the wrong power supply did the trick. From what I saw the pedal doesn't have a zener regulator to protect it. This would actually be an improvement on Krank's part if they added it. Maybe I should send then an e-mail and share this idea with them. After switching out the DIP socket and a new LM386 the pedal sounds awesome. This repair job is a great example why adding a zener diode on the power supply input of the pedal can save money and the life of your guitar pedals.
What caused this? Really I would think that larger current from the wrong power supply did the trick. From what I saw the pedal doesn't have a zener regulator to protect it. This would actually be an improvement on Krank's part if they added it. Maybe I should send then an e-mail and share this idea with them. After switching out the DIP socket and a new LM386 the pedal sounds awesome. This repair job is a great example why adding a zener diode on the power supply input of the pedal can save money and the life of your guitar pedals.
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