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Thanks,
I am looking into it.
So far Polk Support is unresponsive. Strange. Do they care about their customers or potential customers?

A ball park figure: Multiply the input voltage (110) by the fuse rating, (I think it is 3.14 A) and that wil give the maximum power that may be consumed safely by the equiptment. So we are looking at...

C413 is a capacitor and is connected across the smoothing capacitor (1000mf, 160v), cross check th eexact value, but it is the same value as C414 or 416.
Replacing this component may not solve your...

Within the last week an insect went into the sub and onto the power supply board, shorted parts of the circuit and damaged the board. I e mailed Polk service about a replacement power board, I was...