[dustyz]

I have a few pre-amps that have "died" over the years. Both still show voltage from the injectors, but neither show any boost in signal.

Is there a basic troubleshooting guide for the electronics in these things? Something that tends to go bad with electric spikes or lightning? I see no signs of burning or failure on the boards... mosfets seem fine.

Links or ideas? Maybe just a place to start? Thanks!