Hi today in this video episode I am going to show you how to repair your subwoofer or amplifier. So let’s get started.
You can see the sound system is not working let's see what happened with it?
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Step 1: Watch the Video First
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Step 2: Check Power Supply First
The subwoofer comes with a 1.5 amp DC power adapter.most of the case power adapter does not work. And obviously lack of power can not start my amplifier write? Let’s check the voltage output from the power adapter
Step 3: Check the Voltage With Multimeter
The power supply can not provide any significant voltage. To run the amplifier properly I need at least 12 v
Step 4: Let's Make the Power Supply
Step 5: Circuit Diagram
Step 6: Parts List
1 amp Transformer
2200 mfd caps for filtering the DC
7812, with heat sink for regulated 12 v output