Question about Legacy Audio LA770 Car Audio Amplifier
LETS SEE IF YOU HAVE A PROBLEM WITH THE AMPLIFIER ITSELF OR IF SOMETHING IN THE INSTALL
REMOVE THE RCA INPUTS AND DISCONNECT THE SPEAKERS, THEN POWER THE AMPLIFIER UP WITH THIS NO INPUT, NO SPEAKER LOAD CONDITION. IF IT STILL GOES INTO PROTECTION OR FAILS TO POWER UP AND YOU HAVE VERIFIED THAT THE POSITIVE AND ESPECIALLY THE GROUND CONNECTIONS, ALONG WITH THE REMOTE CONNECTIONS ARE 100%, THEN THE AMPLIFIER WILL NEED TO BE SERVICED. SOMETIMES THE RADIO CAN HAVE A DEFECTIVE SAGGING BELOW 11 VOLTS REMOTE OUTPUT WHICH WILL CAUSE THE AMPLIFIER TO NOT POWER UP. IF YOU DISCONNECT THE RADIOS REMOTE LEAD AT THE AMPLIFIER AND TEMPORARILY INSTALL A JUMPER FROM THE POSITIVE POWER TERMINAL AND THE REMOTE TERMINAL OF THE AMPLIFIER, THIS WILL NORMALLY FORCE THE AMPLIFIER ON. AT THIS POINT,YOU HAVE TOTALLY BENCHED THE AMPLIFIER AS IT WILL NOT HAVE ANYTHING TO DO WITH THE ACTUAL INSTALLATION AND IF STILL FAULTY IT SIMPLY WILL HAVE TO BE SERVICED. LET ME KNOW IF YOU NEED FURTHER ASSISTANCE.....V
Posted on Jan 06, 2010
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Posted on Jan 02, 2017
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