I'm having a little trouble with my Equinox, and looking for ideas/suggestions.
Here are some details:
Built on Merlin's PCB layout.
Not mounted in a box yet.
First built almost completely stock (subbed a 1n5817 for the 1n4001).
Checked all the obvious things - power, shorts, bridges, etc.
Jumpered the transistor.
Plugged in a fixed 15K resistor in place of the trim pot.
Replaced c26 and c28 with 47uF tantalum caps.
Here are the symptoms:
When powered up it gets straight guitar signal all the way through but no delay/reverb.
It draws ~260 ma and the voltage regulator gets warm.
I have it hooked up to an adjustable power supply, and I can make it work by turning on the power supply at low voltage, and then turning it up to 9V.
When I do this, it works fine (will all the expected delay) and only draws ~42ma. This makes me think that the PT2399(s) are latching up on startup. If I hadn't tried the "slow start" trick, I might still be thinking there was some other problem.
Any ideas? I'm willing to measure things, and replace parts if necessary.