Question about Pyramid 10 AMP 13.8V POWER SUPPLY Car Audio Amplifier
My ps-21k puts out 13.6V when not under a load, when I add a radio with 4A load the protection lite comes on and puts out 0V. how can I fix this?
You need to get the voltage regulator circuit checked in your ps-21k
Posted on Jun 14, 2008
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Posted on Jan 02, 2017
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When the power was reversed this shorted out one of the components, possibly an Operational Amplifier. This tells me that there is no diode protection and possibly the circuitry is exposed directly to the input power supply. The fix would be to find the shorted component with the use of a schematic and a multimeter. Once you correct the shorted component then if possible you can add diode protection by putting a diode (forward biased direction) in the path of the positive line.
Again you will need a schematic, and a multimeter to work on this problem.
I hope this helps,
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