measuring voltage ?!

is my endless quest to get my latest built, the General guitar gadget Reverb pedal, coming to an end ?

JD asked me to measure the voltage between the 5 volt regulator (a surface mount thingy that is supposed to reduce the electricity current from 9v to 5v in order to power the digital reverb unit aka the Brick) and the pin from the Reverb Brick that receives the current.

So I place one leg of the meter between the 5v regulator and the pin and the second leg on the ground (the ground from the output jack).

Am I doing it right ??

I am reading 7,7 volts ... so there is more likely 2,5 too many volts entering the digital unit. Which might be why the Reverb sounds more like a Feedback from hell when engaged.

Yes, one probe goes to ground.

I don't understand what you mean by 'I place one leg of the meter between the 5v regulator and the pin '. One probe goes on the ground, and the other goes where you want to check the voltage.

Before drawing any conclusions, be sure you're measuring the correct voltage. Viewing the pedal with the footswitch at the bottom, 5V should be present on the regulator leg closest to the edge of the board. You can measure that at the regulator, or at the reverb module, since they're connected by a solid trace. The other outside pin on the regulator (not the center pin) should be at your supply voltage.

If 7,7 is your actual supply voltage, you will need a new battery, also.

That's exactly where I read the voltage : the leg closest to the edge of the board. Let me check the other pin for current voltage. I am using a 9v power adapter. So, maybe, I've burnt the little surface mount 9v to 5v regulator ...

(P.-s. pardon my french in the OP I refer to ''leg'' of the meter but I meant ''probe'' of the meter)

I just checked the DC voltages on my reverb. 8.97 supply from a power supply, 8.27 input to the 5V regulator. 5.02 output from the regulator. The difference between the power supply voltage (8.97) and the input to the regulator (8.27) is caused by the BAT46 diode used to protect the device against incorrect battery or power supply polarity.

So yes, if nothing else around the regulator is shorted, the voltage regulator is suspect.

I just checked the DC voltages on my reverb. 8.97 supply from a power supply, 8.27 input to the 5V regulator. 5.02 output from the regulator. The difference between the power supply voltage (8.97) and the input to the regulator (8.27) is caused by the BAT46 diode used to protect the device against incorrect battery or power supply polarity.

So yes, if nothing else around the regulator is shorted, the voltage regulator is suspect.

He is more than suspect :lol: Guilty I say !

Got a mail from JD and he'll be sending me another regulator : 7,7 volts overwhelmed the Reverb Brick and gave me this loud as hell oscillating feedback when pedal engaged.

He first thought it was the Opamp , but we checked the voltage out of it and also the pedal, when engaged, without the Brick, was working.

I'm hoping this will solve the problem. Because this is the first major problem I encontered making pedal and I've lost a little confidence with this unit not working. This is my cleanest built and I'm a quite satisfied with the paint job I did on the case.

I'll keep you posted. Thanks for ur help Tele Player !