Alesis Studio 32 - Troubleshooting and Technical Notes; D.C. Power Supply Line Troubleshooting

A Quick Note Regarding Short/Loaded D.C. Power Supply Lines
in the Studio 32
The STUDIO 32 main P.C.B. is quite densely packed. This inhibits the implementation of
standard troubleshooting techniques. Described herein is a time efficient technique for locating
D.C. shorted capacitors.
Operational symptoms may include:
No power up.
All L.E.D.’s are dim or pulsing, but +48 v phantom will operate correctly if enabled.
Solution:
Remove D.C. power cables the main P.C.B. and the rear panel P.C.B.
Apply a high current (5A) low voltage (less than 25V) to the shorted supply line. This will
usually cause the capacitor to fuse open.
The mixer should function normally, but a full Q.C. test must be performed to rule out latent
damage.