Hello hubcap,
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,
Thank you,
Shuttle83
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Lol, I didn't read enough on the tags. I just looked at the description, used to people putting it in there. I will try to find it for u.
Dean
What brand and model of radio do you have? The item number varies by radio.
Dean
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