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Problem for Infinity 7540A Car Audio Amplifier

On and off

By nrh06002 on Oct 21, 2008

" "

it was hitting a loud note and just cut out. i noticed that the power light blinked off and on and my speakers were moving in and out very slowly in opposite directions. i have a protect light and clip light and power light, and just the power comes on for a second, every five seconds and a bit of sound comes out. help please

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Solution #1

posted on Oct 25, 2008

flexion1

Rank: Guru
Rating: 88%, 263 votes

Hi.
Take the input leads out of the amplifier for a start, but leave the power and remote cables connected.
See if it still turns on and off. If still faulty, you have probably blown a power transistor inside and the amp is shutting down when the output rises each time. It will almost certainly need looking at. Also make sure you are running into the correct impedance load. If you have hooked up too many speakers you will cause damage.

Mark

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