Question about Car Audio & Video
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Posted on Jan 02, 2017
It can be a variety of reasons but I feel that your amplifier is shutting off after powering on. There is nothing that can be done from the outside but If you are familiar with basic electronics and can attempt to take a look I can try. Open the set after you have pulled off the power, then look into the set and tighten all the connectors and cords. Power on and see where the click comes and goes off. If the relay is not holding on then your protect circuit is shutting it off. Armed with a multimeter turn on the power and check if the main +B power is coming to the output stages.If there is momentary swithch on , then disconnect power and test the continuity in the output stages. If hsort open the leads to the output section and then power on. If the relay stays we have found the fault. you can go on to change the failed outputs. If however the outputs were tested ok, then your fault could be the relay or the protect circuit, Hold a rely for a moment to see if the amplifier powers on, if so check the relay drive transistor , the biasing to the stage. Try this out and I hope my advice helps. Good day
Posted on Jul 24, 2010
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