Re: oldish Kenwood KAC-475 amp not powering on, a resistor is rattling around
Go to radio shack and get a desoldering kit, a soldering iron and some thin flux-core electronics solder. While you're there get the resistor as well. You can get by without the desoldering kit if you don't want to spend the money.
Remove the amp board from the heat sink so you can get to both sides. Use the desolder kit to clean the old solder from the through holes on the board where the resistor goes. Thread the leads of the resistor through the holes in the board and seat the resistor as close to the board as you can get it. Heat the lead and the board trace enough to melt the solder and feed a small amount it to fill the holes and get good contact. Once the solder has cooled, trim the excess resistor lead.
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