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  1. Chas Grant

    Dark Rift Delay

    Thinking about it, if you used all tantalum caps for the 1uF's, this very well could be the issue. They are in the signal path in quite a few places, if they are in the wrong way they will block the signal.
  2. Chas Grant

    Dark Rift Delay

    They will work, but not ideal. Thy have to go in a certain way. You have to look at schematic and figure out which side has the higher voltage, then the + side goes that way. You may be able to measure voltage to ground on each leg of the cap then see if the + side is on that side. It can be...
  3. Chas Grant

    Dark Rift Delay

    C2 is leaking, there shouldn't be DC there. Try replacing it. Not sure if this was the main issue, I think it would affect tone more, but with electronics you never know, especially when the component is deteriorated. (Got my but kicked by a deteriorated transistor for over a month one time...
  4. Chas Grant

    Dark Rift Delay

    It looks like the right side of R3 has a partial path to ground. It could be C2 is leaking or you have a small bridge somewhere. Check DC voltage on both sides of R2. It should be zero.
  5. Chas Grant

    Marshall Guv’nor/Guvernator- no sound

    As long as the pads are still on the PCB its good. I have a pcb, I switch parts on all the time to see what the effects are, been soldered/de-soldered many many times, still rocking with out any pads lifted. If I clean it up it even looks good. :ROFLMAO:
  6. Chas Grant

    Marshall Guv’nor/Guvernator- no sound

    Mr. PedalPCB usually says to go with what's on the PCB as its the latest rev. The build doc may not be updated. That's why I said to see if you can make out what's on the board without removing the resistors. Didn't want unneeded soldering if we could have avoided it.
  7. Chas Grant

    Dark Rift Delay

    Somethings not right, R4 and R3 are the 2 resistors below the TL072, with the chip removed you should have about 4.5 V on both sides of both resistors. Check the build doc to make sure your on the right resistors and double check voltage on them if you can. Make sure the black lead is to a good...
  8. Chas Grant

    Dark Rift Delay

    Actually lets back up a second. With the TL072 removed you have 2.95 volts on pin 3. It should be 4.3 like pin 5. With the IC removed, measure voltage from both sides of R3, its the 1Meg resistor below the TL072. It should be ~4.5V on both sides if TL02 is removed
  9. Chas Grant

    Dark Rift Delay

    The 2.9 to 2.7 on pin 5 is not a biggie, but pin 3 going to 3.2 is weird. Try swapping the TL072. If you don't have another TL072, any dual op amp with the same pin out should work.
  10. Chas Grant

    Marshall Guv’nor/Guvernator- no sound

    GO WITH THE BOARD!
  11. Chas Grant

    Dark Rift Delay

    The 78L05 isn't a transistor, but a voltage regulator, and you have already checked it. The PT2399 needs +5V power to operate. This is pin 1 which is 4.99V. It gets the 5V from the 78L05, so since pin 1 of the PT2399 is 4.99V the 78L05 is good. The LM833 actually has an input coming from the...
  12. Chas Grant

    Marshall Guv’nor/Guvernator- no sound

    Looking at the build docs, the pic on the web page for the PCB and the pic of your build, I see a few discrepancies. Check and see if you can see the values printed on the PCB with out removing the resistors, if not you may have to do continuity checks to verify them. The circled resistors are...
  13. Chas Grant

    Please help with my Dual Looper build

    That is just a positioning thing. If that's how you want them, then all is good, it is your pedal! I move jacks all the time. Heck I'm boxing one up now in a 1590B with side jacks. Just my preference. Another route to take is to check it with an audio probe. It will let you know where you're...
  14. Chas Grant

    Please help with my Dual Looper build

    @Mcknib Nice catch, I didn't even think of that. I've only used those jacks a few times, but I happen to have that board right by me. The ones I have are soldered on the other side. So that just may be it!
  15. Chas Grant

    Dark Rift Delay

    OK, These readings look correct. Pin 5 is not used in this circuit and it should fluctuate between 0 and roughly 5V. Pins 13 and 14 are not used either, that's why those are a bit strange. Everything else looks good. Pin 1 is Power in, +5V. Pin2 is internal voltage, the PT2399 cuts the +5 in...
  16. Chas Grant

    Please help with my Dual Looper build

    Send B and Return B jacks are swapped and in the pic above, the top jack, on the far right is it wired correctly? It looks like you have white to ring and black to tip, your other jacks are white to tip and black to ring.
  17. Chas Grant

    Big Muffin build w/AB video.

    Nicely done! Sounds good, it is very hard to tell which is which.
  18. Chas Grant

    Dark Rift Delay

    Pin 5 is an AC square wave. Check it with DMM on AC and see what it is. Recheck pin 11, 46.2 is a wee bit high. Pins 11 and 12 are the voltages that are off.
  19. Chas Grant

    Design Challenge #1

    As any great chef would
  20. Chas Grant

    Design Challenge #1

    It's a rainbow of components! :LOL:
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