Author Topic: Is R1 needed for Aquaboy 2016  (Read 111 times)

skeeter

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Is R1 needed for Aquaboy 2016
« on: July 06, 2018, 05:55:40 AM »
I built the Aquaboy 2016 and it work well but I had another board so I decided to build the aquapuss , while biasing the pedal it was quiet but I could hear oscillation etc it was very low output though there is no sound in bypass ,eventually I got loud hum coming from the pedal,if I bridge pin 3-4 of the op amp I do get delayed single ,I checked the resistor values and found r1 had no reading so I replaced it still no luck ,can I check the pedal with just the jack that would mean desoldering the 3dpt , i think the pads for the switching may be bad a bridge under the  silk screen I have checked for bridging and the IC readings are good ,dont want to bin it yet.I take it this is buffered bypass.

blearyeyes

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Re: Is R1 needed for Aquaboy 2016
« Reply #1 on: July 07, 2018, 10:18:29 AM »
If the bypass isn't working then either the switch wiring is wrong or you have a bad switch. It's an external hard wire that bypasses the circuit completely most of the time. Might have a buffer in there though sometimes. wish I could be more help......
« Last Edit: July 07, 2018, 10:33:58 AM by blearyeyes »
I sometimes build pedals as "Dan"
I built peddles for Bat Thumbís car.

skeeter

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Re: Is R1 needed for Aquaboy 2016
« Reply #2 on: July 17, 2018, 05:15:08 AM »
Thanks for the reply,I tried a new switch and have the same problem, ,I desoldered all the components and reflowed , I think its probably a bad trace, Brian has suggest this to someone in  the past  ,but who does a continuity test on a manufactured board before they start, only on a diy board ,