Author Topic: Honeydripper problem solving  (Read 119 times)

KMRO

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Honeydripper problem solving
« on: April 13, 2019, 10:53:16 AM »
I finished the honeydripper and I'm struggling. 

The LED comes on, but no sound through pedal either with the footswitch engaged or not.

Here are some photos:
https://imgur.com/m0bfxoB
https://imgur.com/eYzA8Lz
https://imgur.com/GGkm952
https://imgur.com/kBEblsl

I'm curious if I wired the input/output jacks incorrectly?  Is Jack 1 input?  I've been using a stereo jack for inputs.  Do I need to do something with the ring connection?

Did I miss a ground opportunity?  I've been running a wire from the output sleeve to the enclosure (visible in pic 1). 

Any suggestions or help would be appreciated. 

KMRO

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Re: Honeydripper problem solving
« Reply #1 on: April 14, 2019, 06:29:40 PM »
Examined this pretty closely today.  Went over every soldering joint with a magnifying glass and carefully re-did everything that seemed suspect.  I also didn't feel that confident with the ground, so I drilled a hole and ran a bolt through the side of the enclosure.  Now I'm grounding jack 2 with a solid connection.  Still get LED when I hit the switch, but no sound. 

I guess that is not totally true, I get a very quiet sound that changes subtly when the 4-way switch is turned.  Which makes me think that there is something simple afoot. 

KMRO

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Re: Honeydripper problem solving
« Reply #2 on: April 21, 2019, 11:21:40 PM »
I continue to try to trouble shoot this project, but I'm planning on buying another copy of the PCB and starting again.  This was a good chance to learn how to use the multimeter. 

Power at DC plug: 9.45
Ground at board: 0
9v at board: 9.45

Below are my IC readings.  If any of the reading seemed divergent from the expected readings in the build guide, I noted the expected reading in parentheses. 
IC1: 4558
1 - 5.1
2 - 5.1
3 - 5.1
4 - 0
5 - 5.1
6 - 5.1
7 - 5.1
8 - 17.36

IC 2:LM324
1 - 5.1
2 - 5.1
3 - 5.1
4 - 17.3
5 - 5.1
6 - 5.1
7 - 5.1
8 - 5.3
9 - 5.1
10 - 5.1
11 - 0
12 -5.1
13 - 5.1
14 - 5.27

IC 3: LM324
1 - 5.1
2 - 5.1
3 - 5.1
4 - 17.4
5 - 4.94
6 - 5.1
7 - 4.8 (divergent 38mV)
8 - .57 (divergent 5.25)
9 - 2.83
10 - 2.83
11 - 0
12 - 2.83
13 - 2.83
14 - 2.4 (divergent 35 mV)

IC4: 13700
1 - .57 (divergent 35mV)
2 - 1.39
3 - 5.1
4 - 5.1
5 - 5.1
6 - 0
7 - .12
8 - 2.17
9 skip
10 skip
11 5.1 (divergent 17.52)
12 - 5.1
13 - 5.1
14 - 17.3
15 - skip
16 2.2 (divergent .44)

IC5: 1054
1 - 2.3
2 - 4.9
3 - 0
4 - 0 (divergent 28 mV)
5 - 9.1 (divergent 0)
6 - 1.3 (divergent 2.43)
7 - 2.4
8 - 0 (divergent 9.18)

Thanks for the consideration.