Question about Crate FlexWave FW120HS and FW412 Half Stack
This has a digital reverb unit. The settings are subject to get clobbered I suspect. I don't know if you are using foot switch for the reveb control... You may also have a cable that has come loose...
Here is a link to schematic for your unit:
Notice that the reverb is set by DC voltages from teh setting pots that go to the DSP chip. These setting pots receive voltage from a 16 volt ZENER regulated source. First thing is to CHECK that voltage. If the Zener has opened and you find much over that 16 volts, that is your cause of the problem.
The circuitry is on page 1 in the 3B to 3D lower left of the page.
Posted on Feb 14, 2011
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