built from this site https://tagboardeffects.blogspot.com/2018/02/lovepedal-jubilee.html?showComment=1533464104093#c8452949375347719527.
built to specs.
. bypass works as it should. when pedal is on weird noise from it no input sound at all. checked all solder joints. checked for jump overs on board. ic volt useing power pack output 11.30
ic lm386
pin 1 1.64
2 0
3 0
4 0
5 4.54
6 11.30
7 5.66
8 1.64
pin 1 is d 5 hole 4
Please help this one is driveing me nuts.
Post pictures of your board, from both sides. Probably is something easy to fix, like an solder bridge.
From your voltages, I'd bet there's a solder bridge connection pins 2 and 3 of the 386. Pin 2 should be at 0V, but pin 3 shouldn't be 0V, that's why I guessed a solder bridge is connecting those pins. So your problem is probably at the input part of the circuit.
can't post pics. checked for a bridge there is none. should there be power at pin 3 with no signal coming in from the input?
How have you wired up your bypass switch? Is it possible you have accidentally grounded the effect input when you switch it on?
Not sure how you checked for bridges, but it's worth using a multimeter with a connectivity setting, or using a resistance setting, and see if there is any connection between pins 2 and 3, or between the two strips of copper they are soldered to.
That is how I checked it with multimeter and under a magnifiying glass also
stomp switch is wired correct
mth5044
I found the problem. the in and out jacks are grounding the circuit out. If I pull both jacks out of the case it works fine.
Any suggestions on fixing this?
Thanks
this is how I wired the switch
(https://s15.postimg.cc/of0ykwb5z/Offboard_wiring.png) (https://postimg.cc/image/of0ykwb5z/)
Welcome.
Quote from: whomeno on August 05, 2018, 03:08:38 PM
can't post pics
I'm sure you can. Hit reply and then use the "Add image to post" link. It's right beneath the text box where you'll be typing.
welcome, like they say. as we can't see what you've built, we have to guess. my guess is you've mis-identified the "tip" and "sleeve" connections of the jacks. when bypassed, the signal has good connection between the two, but when "in circuit", you are feeding ground [from the sleeve] to the circuit instead of signal [from the tip].
Nice guess!
I am now getting some sound through but it has alot of feed back and clipping with all knobs off as soon as I raise any of them vol-tone drive it will knock your ears out. for some reason when i install jacks in case it gronds the circuit out. here are some pics
(https://s15.postimg.cc/902ukxgav/20180806_165717.jpg) (https://postimg.cc/image/902ukxgav/)
(https://s15.postimg.cc/y63srrpav/20180806_165819.jpg) (https://postimg.cc/image/y63srrpav/)
(https://s15.postimg.cc/6ir3dor9j/20180806_165836.jpg) (https://postimg.cc/image/6ir3dor9j/)
Looks like the tip of your output jack (on the right in the first picture) is a tad close to the pot underneath it. When you insert your cable plug, it might be flexing, thus grounding the signal through the pot. I Dunno.
twisted jacks to make sure not hitting. the jacks are grounding out in the holes .
Looking at the first picture, that green wire is going to the sleeve of the left jack. It should go to the tip.
^No, the darker green wire is connected to both sleeves, the lighter green wire is going to tip. I see a couple other possibilities. The left jack (top pic) could be grounding against the boss in the corner of the enclosure, maybe. Second, the #3 lug of the (I think) volume pot has frayed strands, could be grounding out there.
But I think the #2 and #3 lugs of the volume pot are reversed.
ok guys I ready to pull my hair out (I'm Bald). I was using mono jacks. as soon as i installed them nothing with pedal on. but bypass worked great. made myself a probe. tested it and every time i touched the case with the probe it worked good. so I used stereo jacks ground to sleve and input and out put to tip. now it works great with power on, but it keeps clipping at time for some reason. but now my bypass has static in it. could the be a flaw in the design of the vero board? more then likely not.
thanks for the help so far. I built the jacks mosfet booster on vero board had no problems at all
i checked all pots nothing grounding out
Quote from: thermionix on August 06, 2018, 09:28:03 PM
^No, the darker green wire is connected to both sleeves, the lighter green wire is going to tip.
Yeah you're right, after a triple-check I can see two green wires.
Quote from: thermionix on August 06, 2018, 09:28:03 PM
But I think the #2 and #3 lugs of the volume pot are reversed.
Ignore this, apparently I was looking at your Drive pot, not Volume. Hard to follow these circuits without a schematic.
what a great day!!!!!!! pedal is fixed.Drive pot was shorting out under it. A little electrical tape and it works like a charm. Now on the my nyc big muff.
Thanks for all the help!!
> A little electrical tape and it works like a charm
Electrical tape won't last on a sharp edge. Cut a bit of soda-pop plastic.