Question about Earthquake Sound PH-D2 Car Audio Amplifier
If the outputs were blown, the 20 pin HIP4080 probably needs to be replaced.
Posted on Nov 03, 2007
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You need to check the DC voltage across the B+ and ground terminals. You also need to check the DC voltage across the remote and ground terminals. If the voltage is less than 11 volts, you need to check the B+ supply and remote wiring for breaks or open fuses. You should also check the ground connection to confirm that it's not loose.
If the voltage is OK, the output transistors are likely shorted.
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