Slice in PCB

[Soozay]

Yeah, I had already started to remove the wires after doing some testing and just decided to clip them at that point. I’d definitely start that one over from scratch.

My real concern now is that I fried some components via testing.

[brd]

Let’s try some voltage measurements while you work on replacing the ribbon cable for the reverb switch. You don’t need the IC’s installed yet. With power supplied to the jack.  Meter set to DC voltage, ground lead on a known good ground, preferably on a GND pad or jack.

First check is at the DC pad. expect a little over 9v. We don’t want to see -9V.

next check the voltage after D5. that would be on the cathode side or the stripe. Voltage should be slightly lower.  This is your VC voltage as labeled in the schematic. No voltage means D5 died saving your project. stop here and replace it.

Now check IC1,IC3 IC4, and IC6 (the 8 pin IC’s) you want to check pin 8 which will be to the right of the index notch. You should have the same voltage as VC

Let us know what you find.

 

[Billy]

Sorry been working so not had a look for a while

I’ve had a quick glance at your pcb particularly orientation of polarized components which all look correct

Just to clear up some basics do you get no sound at all or no effect but bypass sound

Without powering the board use your meter diode test to check D5 you should obviously only get a forward voltage reading in one direction and OL or 1 in the other then power the board and check if you still get voltage on D5 cathode check voltages on IC6 pins and pin 1 of the BTDR3

You’re basically trying to work out how far power gets to in the circuit  and hopefully narrow down your problem area

You don’t really want to change or replace anything without reason or it will get confusing

 

[Author]

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