Harley Benton HBAC-20
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Start problems with HBAC-20? Here is how to repair it:
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Amplifier have idle chip and it start (red led) when you play quitar and go back to idle (green led) when 30min of no use.
I couldn’t fix it so i add red wire to start amplifier powersupply when power switch is on.
I added red wire shown at picture to connect negative pole to relay coil.
Now amplifier starts and shut down only at the power switch.
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