Question about Polk Audio Pa880 Monoblock Amplifier
Amp is blowing fuses, wiring is good because another amp works on it, what could be some problems and how could I fix them?
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Posted on Jan 02, 2017
The brown resin is glue that changed color due to heat and age. Rarely have I seen it cause problems. So unless you are having problems, No.
Posted on Feb 28, 2009
SOURCE: 5channel amp 6 speakers how
if it is a 5.1 channel amp wire the center speakers together into the same port. wire the two front speakers in the or der that they would appear on the amp (such as left front speaker to the left front speaker terminal on the amp etc.) and do the same for the rear speakers. and all you should have left is the sub-woofer channel in which you do not have to worry about.
Posted on Jun 04, 2011
SOURCE: Polk Audio PSW202 subwoofer.
Fuse probably went bad because either the large filer capacitors at the edge of the PCB went bad and or the final output IC mounted on the heatsink(15 pin) fried. Check the capacitors and all the semiconductor components on the board for burn marks or corrosion. You have to remove the heat sink clamp from in front of the output IC to adequately visualize its condition. In fact you might have to remove the large aluminum heatsink attached to the chassis to get a good view of the IC. If it or the heat sink clamp show signs of thermal burns you need to replace it. The IC is a TS TDA7294 mono audio amp available at Mouser Electronics. Replace the 35V 4700mF caps with 50V 4700mF caps. You will only have enough space on the top of the PCB for one of the larger caps. I mounted the other on the circuit side of the board. Note the polarity of the original caps and respect it in their replacements. The fuse is a 5 X 20 medium speed slow blow 250V 2.0A glass fuse.
Posted on Dec 02, 2011
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