Re: Almost newbie needs to troubleshoot electric guitar effe

[tempus fugit]

"goldenhound" <goldenhound104@gmail.com> wrote in message
news:fe75cc7f-42fd-4752-bea5-90b51b935dc9@r15g2000prh.googlegroups.com...

I've built some kits, and can use a soldering iron, but know almost
nothing about trying to troubleshoot a battery-powered electric guitar
effect. Its an Electro Harmonix Electric Mistress Flanger, and it
consists of about two dozen components. I can find where the power
source connects to the board. I hit the first IC and I don't get a
signal, but am I doing it right? How do I test it?

I built a signal probe. I plug a CD player into the "guitar in", and
touch the probe to the PCB trace (which connects to an audio
amplifier), and the music comes out of the amp if I'm following the
trace correctly. Will that help me find the bad component?

1. I should be able to trace power, no?

2. How do you follow a trace on a PCB when it hits an IC or cap or
resistor? Do you have to disconnect it or ?

Whats a good reference for troubleshooting PCB boards and circuits?
Either on the web or in a book?

TIA mucho,
Rob

You say you hit the 1st IC and yhou dont get a signal. You need to know what
that IC is and what pins to test to see if your audio should be travelling
down that path. DId you get the schematic that was linked in an earlier
reply? Also, what's wrong with the flanger? Knowing what the symptoms are
can help us to point you in the right direction. It's hard to suggest a plan
of action for testing when we dont know what the problem is.