KYE Systems Corp. Genius SW-M2.1 350, Руководство по обслуживанию

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1.2.5Noise and cacophony
Service Manual
SW-M2.1 350
Version No.：1.0 Page:11 of 20
Noise and cacophony
The power supply is
poor,
causing damage to
the filter capacitor
(C26, C38) and
improper voltage
ripple interference
to the IC;
The PCB is affected
with damp, dirty or
cracked. The signal line is
improperly grounded
CN5
Check/repair/replace
Check/repair/replace
The foot of JACK1
is welded falsely
or the copper foil
breaks;
The potentiometer
is used for over
long time, causing
bad contact to the
knob type spring
plate.
Replace/repair