Hyundai H-SA1004, Instruction Manual

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7
General information
Troubleshooting
Before you consult this listing, make sure the vehicle’s electrical system is working properly by
verifying that other electrical items (e. g. headlights, windows, etc.) still function correctly.
Symptome Cause Solution
No audio Low or N.C. remote turn-
on connections
Check remote turn-on voltage at amp and head
unit.
Blown fuse Replace with new fast-blow fuse.
Power wires not connected Check butt splices or solder joints;
Check ground and battery connections.
Blown or non-speakers
connected
Use VOM or DVM to measure speaker coil
impedance; check speaker wiring connections.
Distorted audio Input sensitivity not set
properly or damaged
speaker cones
See adjustment procedure and check each
step; inspect each speaker for damage and
repair or replace suspected component.
Low turn-on voltage Refer to head unit owner’s manual.
Audio level low Mute circuits is on head
unit
Check electrical system for low voltage;
Check ground connection.
Audio lacks Speakers wired with
wrong polarity, causing
cancellation of bass
frequencies
Check polarity of wires from amplifiers to each
speak as defined by the system design;
Check battery voltage at amplifier during
operation.
External fuse
blowing
Incorrect wiring or short
circuit
Refer to electrical installation and check each
installation step.
Whining noise
on audio with
engine running
Amplifier is picking up
alternator noise
Install a line noise filter on the head unit’s power
wire;
Check alternator routing diodes or voltage
regulator for proper operation. Check all grounds,
check battery voltage, check RCA cables.
Ticking noise
on audio with
engine running
Amplifier is peaking up
radiated spark noise
Check RCA audio cable; Install an in-line noise
filter on the head unit’s power wire, check spark
plug wires.