Did i fry my qtron pedal? Please help

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Powersupplydude

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Jul 3, 2018
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#1
So i think i did something pretty stupid today. Recently i bought a used qtron pedal from the USA, i live in italy. It came today with the US power supply. Eager to try it out I used a power adapter (like a travel adapter) i had at home to be able to plug the us power adapter in. The only thing that happend was the light of the pedal went on and then off again. After that no light comes on anymore and it works only in bypass mode (power adapter plugged out).
My question is: is there any chance i didn’t fry the pedal and just damaged the us power adapter?
I bought a eu electro harmonix power supply today, is there any chance it will work with whis supply or am I going to have to send it in for repair?

Thanks to everyone who’ll take the time to read and respond.
 
#3
What does the power adapter do? Does it change voltage from 220 to 110? Or does it just change the plug type from US ("flat" contacts, edison type) to European (round contacts)? If the power adapter just changes the plug type and not the voltage, it's possible the power supply was damaged before the qtron was damaged. Do you have a volt meter? if so, check the output cable from the power supply. It should be 24 volts DC across the contacts.
 
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#4
Ben B said:
What does the power adapter do? Does it change voltage from 220 to 110? Or does it just change the plug type from US ("flat" contacts, edison type) to European (round contacts)? If the power adapter just changes the plug type and not the voltage, it's possible the power supply was damaged before the qtron was damaged. Do you have a volt meter? if so, check the output cable from the power supply. It should be 24 volts DC across the contacts.
Click to expand...
Hey there thanks for replying, i’m pretty sure it did not change the voltage but only the plug, it’s pretty cheap adapter like 4 bucks. Unfortunately i don’t have a volt meter, i guess I’ll have to wait for the new power supply to see if it still works...
 
#5
GMC said:
Try it and see what happens. Often the op-amps can take a fair amount of power abuse before they die, but with a random voltage and a random current, who knows what you did to it. You won't know until you get the right PSU for it.
Click to expand...
Thanks for answering, I’ll wait for the power adapter then and see what happens.
 
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#9
Yes, definitely try it with the correct power supply. If that doesn't work, check this out:

Repairing power-fried pedals

In summary, if the pedal is fried, it's really just a matter of replacing parts until it works, and the most likely parts to fail from over-voltage are capacitors. Those are cheap, and hopefully can be replaced without too much trouble if you're decent at soldering. Just make sure you replace them with the exact same kind: capacitance, voltage rating, and tolerance. Also important: make sure you install the new capacitors with the correct polarity, if applicable. Some types of capacitors have designated positive and negative leads, and can be damaged if you install them backwards.
 
#12
Powersupplydude said:
So i think i did something pretty stupid today. Recently i bought a used qtron pedal from the USA, i live in italy. It came today with the US power supply. Eager to try it out I used a power adapter (like a travel adapter) i had at home to be able to plug the us power adapter in. The only thing that happend was the light of the pedal went on and then off again. After that no light comes on anymore and it works only in bypass mode (power adapter plugged out).
My question is: is there any chance i didn’t fry the pedal and just damaged the us power adapter?
I bought a eu electro harmonix power supply today, is there any chance it will work with whis supply or am I going to have to send it in for repair?

Thanks to everyone who’ll take the time to read and respond.
Click to expand...

You probably just killed the power supply.
 
#14
Look on the Qtron power adapter, it might say works with 100V to 240V. Is there anything written there like that?

That is going to covert AC to the 24V DC or 9V that your pedal needs.
 
#15
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