Blaupunkt GTA 475 - Troubleshooting Common Issues

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TROUBLESHOOTING
If any of the following problem occur, please resort to Troubleshooting for the possible solutions. Consult Blaupunkt
authorized dealer if problem persist.
Problems Possible Causes Solutions
No audio output Remote wire failed to work Examine voltage output/connection and repair
accordingly.
Fuse failed to work Examine power integrity and reversed polarity, repair
or replace fuse accordingly.
Disconnected power wires Examine power wire and ground connections.
Replace and repair accordingly.
Missing output from source or Examine input connection and signal integrity.
audio input not connected Replace or repair accordingly.
Disconnected speaker wires Examine speaker wires.
Replace or repair accordingly.
Unstable audio cycle Broken speaker Examine radio system.
Replace or repair accordingly.
Thermal protection will be activated Improve amplifier's ventilation accordingly.
when amplifier temperature
exceeds 90°C
Poor audio input Examine input connection.
Replace or repair accordingly.
Audio distortion High amplifier sensitivity setting, Refer to manual to reset gain setting.
exceed maximum output capability
of amplifier
Low impedance Examine speaker impedance. Rewire speaker
accordingly, if below 2Ω stereo or 4Ω mono.
Improper connection of speaker Examine speaker wire, replace or repair accordingly.
and amplifier Refer to manual for installation instruction.
Broken speaker Examine radio system.
Replace or repair accordingly.
Poor bass response Wrong speaker wire polarity Examine speaker polarity and repair accordingly.
connection causing phase
cancellation
Broken battery fuse Low impedance Examine speaker impedance. Rewire speaker
accordingly, if below 2Ω stereo or 4Ω mono.
Incorrect power connection Examine power wire and ground connections.
Repair accordingly.
Fuse used is smaller than Replace with recommended fuse type.
recommended
Over drawn current Examine speaker impedance. Rewire speaker and
replace fuse accordingly, if below 2Ω stereo or
4Ω mono.
Incorrect power wire Examine power wire and ground connections.
Repair accordingly.
Broken amplifier fuse Over drawn current Examine speaker impedance. Rewire speaker and
replace fuse accordingly, if below 2Ω stereo or
4Ω mono.
Fuse used is smaller than Examine power wire and ground connections
recommended and repair accordingly with correct fuse.