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DIY Stompboxes => Building your own stompbox => Topic started by: Tombaxter97 on November 11, 2017, 09:15:03 PM

Title: Phaze 90 no signal
Post by: Tombaxter97 on November 11, 2017, 09:15:03 PM
Hi guys,

put this circuit together with four matched fets and there is no signal. I have been trying to troubleshoot for a while but with no luck. Any chance anybody can tell me some useful areas of the circuit to make voltage measurements or probe to try and find the problem and so you could maybe help me.

http://pedalparts.co.uk/docs/Faze90.pdf

Thanks.
Title: Re: Phaze 90 no signal
Post by: jimilee on November 11, 2017, 09:43:59 PM
Parts placement, orientation, value and soldering. Start with an audio probe. Do you have pictures?


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Title: Re: Phaze 90 no signal
Post by: thermionix on November 11, 2017, 10:19:59 PM
No signal at all, not even dry, suggests to me an error with the offboard wiring.  Did you use the PCB to mount the footswitch or hand wire it?
Title: Re: Phaze 90 no signal
Post by: Kipper4 on November 12, 2017, 03:22:57 AM
My vote says it's boxed and shorting on the carcass.
we need much more info to help

please go here.

http://www.diystompboxes.com/smfforum/index.php?topic=29816.0

picture of the build help too
solder side, componant side, offboard wiring included

Rich
Title: Re: Phaze 90 no signal
Post by: Juan Wayne on November 14, 2017, 08:17:09 PM
Agree with all of the above. We need more data and pics as well, but no signal at all points at common issue either before of after the phasing part of it, since nothing comes out. Probing should be focused there, so we can identify where the signal goes dead.