Product: Polk Audio PSW202 powered home theatre subwoofer
Problem: Blows fuses in matter of seconds
Solution: Found component causing internal short, need advice on replacing it
burnt Audio IC amp-
I'm fairly sure that the darkened solder on the bottom of the board has not come into contact with anything it shouldn't have.
amp without aluminum cover-
Picture of everything (aluminum cover in place)-
So the little audio amp on the circuit board burned out and I need to replace it with this:Audio IC (mouser electronics)Question #1: I've soldered wires before, is there anything special I need to know about soldering a circuit board?
Also, the heat sink for the amp was in contact with a large, aluminum enclosure and had some thermal paste on it. The thing that confused me though was that there was a thin piece of clear plastic stuck between the amp and the aluminum.
aluminum cover, note the plastic piece held in place on it with thermal paste-Question #2: Do I need the thin piece of plastic to separate the amp and the heatsink?Question #3: Can I clean the surfaces (as I would on a PC's CPU) and reapply thermal paste that is meant for a PC's CPU?
Thanks in advance for any answers/advice!