Question about MA Audio Car Audio & Video
I have a ma audio hk 4000 and it comes on and has good singal showeing 12 volts and good temp but theres no sound comeing out what could b the problem could it b and output transistor and do you know were can i find a scamatic from
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Posted on Jan 02, 2017
SOURCE: hifonisc bx 1605d
i think you could but before doing that did the amp itself send the output to the line if it did then replacing the parts would be pointless. if it was a hook up problem then replace parts and don't let it happen again
Posted on Dec 15, 2007
i suggest u look at the spkrs inside the box and see hw they are wire inside the box that could be one your problem[firstname.lastname@example.org]
Posted on May 26, 2008
SOURCE: my ma audio hk 4000
If there is no protection light on, be sure the input is on. Some head units need to be turned on manually (factory set to OFF).
Verify the subwoofers are wired properly.
A list of your components would help to solve your problem.
If it is new, it should still be under warranty - worst case scenario output transistor(s) blown, or power supply bad.
Posted on Jan 09, 2009
You did not specify which Fusion amp you have but if the insides looks like the Fusion PP-AM60020 image below, you'll have to "desolder" the transistor.
First remove the heat sink from the transistor case. You'll need a controlled heat soldering station, a desoldering vacuum tool commonly referred to as a "solder ******", and some desoldering braid. Be careful with the heat around other components.
After removing the transistor, use the desoldering braid to clean off any remaining solder from around and in the circuit board mounting holes. Position the new transistor and solder it to the board. Put a thin film of thermal compound on the heat sink and remount it to the new transistor. Use just enough of the compound to insure an air-free join between the transistor case and the heat sink. Reassemble the case and you're finished.
Hope this helps.
Posted on Jun 03, 2009
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