snotrockits
New member
Moving this thread to Troubleshoot from another thread. Hopefully to fix the issue I'm having but also catalog for if anyone else that experiences the same issues.
This was a similar topic, but never saw a follow up to see if the users issues were resolved.
https://forum.pedalpcb.com/threads/griffin-ricochet-surfy-bear-clone-issues.21658/
Wondering if I can pick anyones brain on what might be wrong.
Just Built a Griffin Ricochet with the improved mixer.
Only getting dry signal that is a little fuzzy.
Dwell and Tone arent doing anything. Wet mix does nothing. The only thing working is dry mix.
Absolutely no reverb. Even when crashing the tank. (Using a brand new SurfyPan Extra 4AB3C1B)
The MOSFET's (or at least the heat sink I have installed on them) is getting CRAZY hot.
TP1 is measuring 5.65v. R15 has a 1.5ohm resistor.
If anyone has any tips or has ran into this before, any advice would be super welcome.
Thanks!
Some things that have been asked already:
No sound when crashing the tank means return stage isn't working. Only further idea is a checklist;
This was a similar topic, but never saw a follow up to see if the users issues were resolved.
https://forum.pedalpcb.com/threads/griffin-ricochet-surfy-bear-clone-issues.21658/
Wondering if I can pick anyones brain on what might be wrong.
Just Built a Griffin Ricochet with the improved mixer.
Only getting dry signal that is a little fuzzy.
Dwell and Tone arent doing anything. Wet mix does nothing. The only thing working is dry mix.
Absolutely no reverb. Even when crashing the tank. (Using a brand new SurfyPan Extra 4AB3C1B)
The MOSFET's (or at least the heat sink I have installed on them) is getting CRAZY hot.
TP1 is measuring 5.65v. R15 has a 1.5ohm resistor.
If anyone has any tips or has ran into this before, any advice would be super welcome.
Thanks!
Some things that have been asked already:
No sound when crashing the tank means return stage isn't working. Only further idea is a checklist;
- Verify the tank send/return are the right way around and isolated from enclosure. REV IN on the board connects to IN on the tank . Can be confusing.
Verified correctly connected - Did you pre-test your FETs?
Not very well I think. Ordering new ones and will being doing a more thorough job on round 2. I see posts that this can be rather critical - Verify wiring at the footswitch and jacks. Verify any sockets are fully seated.
Verified correct - The mosfets are rated for something like 175C. They run too hot for a touch test. Having 5.65V for TP1 is a good sign for send stage. A 2 or 3 ohm resistor would also be possible for R15 for less heat.
The heatsink I had on the mosfets were probably somewhere around this temp, so I'll assume they're ok. - Keep in mind that depending on pot mounting/wiring you might have to turn the Dwell and trimmer knob down to get reverb once you get a crash working. Pay careful attention to the pot pin numbers on the schematic.
Paid attention to the lug markers for the pots. Installed correct. - Power supply needs a decent amount of clean quiet 12V
Have a rock solid 12v 3A power source
