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Hi Everybody,

I was wondering if someone had a wiring diagram for a slam mod. I want a ramping oscillation on my Hamlet Delay that is activated by a momentary foot switch. I have seen a diagram before but can't find it. If someone has any info that would be great.

Thanks.

Hi Jon,

Sorry I haven't replied yet, I didn't see what you said on the end. There is 9.50v on the gate of the FET, how should I get rid of this? When I audio probe the circuit do I need to have power going through it? I needed to have a break from the troubleshooting this but I hope to have it fully audio probed in the next week. Here are the FET voltages again.

2n5458

G: 9.50V
S: 8.55V
D: 8.86V

Thanks

Yes, the foot switch pads are connected, I plug them into the same bus on my breadboard. I forgot to mention that there is a kind of whining, whistling noise in the background of the delay. The characteristics of the noise changes when I adjust the delay pot from whiny to more of a whistle. The mix pot is also crackly and when I turn it down low it makes a pop sound and there is all this noise in the background. Does any of this mean anything?

I already mentioned the layout I'm using. It's the effects layout one. http://effectslayouts.blogspot.com.au/2015/12/jon-pattons-hamlet-delay.html  I don't have an audio probe. Should I make one? There isn't a connection between pin 7 and 8, but I will double check it. Also what else could be wrong with the circuit?

I tried checking for a short by seeing if pin 7 and 8 were connected by using the continuity setting on my multimeter and they weren't connected. I checked the traces and the pins as well and they weren't connected to each other either. Is this the right way of checking for a short? (Sorry I know this is a dumb question, but I'm knew to this). I get a beep when I touch the probes along the traces i.e. touching pin 8 with one probe and touching the trace coming off of it. Should this be happening?

I'm currently powering it with a 9v battery on my breadboard, which is probably the reason for the low input voltage. I'll check around for a short with pin 7 and 8. When it comes to it how should I bias the 2n5458? I have already roughly biased for 9v.

Thanks

Hi Jon,

Here are the voltages. I roughly biased the 2n5458 to read 9v. I checked the continuity of the regulator to the PT2399 and it was connected. I don't think this matters but I am running it using a battery on my breadboard. Both pin 7 and 8 of the PT2399 were very erratic in their readings, they were roughly around .6v but it was hard to tell. I am using the layout by Effects Layout.  http://effectslayouts.blogspot.com.au/2015/12/jon-pattons-hamlet-delay.html

PT2399

Pin 1: 4.79V
Pin 2: 2.34V
Pin 3: 0V
Pin 4: 0V
Pin 5: 2.83V
Pin 6: 2.35V
Pin 7: .6v
Pin 8: .6v
Pin 9: 2.36V
Pin 10: 2.36V
Pin 11: 2.35V
Pin 12: 2.36V
Pin 13: 2.35V
Pin 14: 2.36V
Pin 15: 2.35V
Pin 16: 2.35V

Regulator - 7805

In: 7.47V
Ground: 0V
Out: 4.82V

2n3904

C: 10.90V
B: 1.020V
E: .400V

2n5458

G: 9.50V
S: 8.55V
D: 8.86V

TC1044S

Pin 1: 7.33V
Pin 2: 3.77V
Pin 3: 0V
Pin 4: 135.9 mV
Pin 5: .331V
Pin 6: 2.36V
Pin 7: 3.95V
Pin 8: 7.28V

Hi everybody,

This is the 4th pedal that I've built and I need some advice. It is a Hamlet Delay on Perfboard. Currently it is making a kinda reverb-esque sound and not delaying. Could this be the PT2399? I tried grounding all the pins on PT2399 by connecting them to ground on my breadboard and that didn't seem to do anything. I am currently using a 2n5458 instead of a 2n5457, could this be the problem? I'm using a 20k trimmer for the bias and a trimmer for the volume control. I'm also using a TC1044SCPA which is why pin 1 is connected to pin 8. I'm not really sure why it isn't working, it is still passing a signal. Here are some photos as well.

Thanks for all your help.