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Polk Audio amp problem

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

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SOURCE: Polk Audio PSW350 Subwoofer keep blowing the fuse

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

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iadame
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SOURCE: i have the 10

speaker may be blown. Use a multimeter to check resistance.

Posted on Oct 09, 2009

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SOURCE: Polk Audio PSW202

The power supply or amplifier has a shorted component.

Posted on Mar 12, 2010

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

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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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1 Answer

Hi I have a Polk PSW10 it keeps blowing fuse as soon as I plug it in after replacing fuse


Fuses blow when there's an overload. The most common cause is a shorted semi-conductor in either the power supply or the main amp stage.

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Many of these SUB amps ended up with Capacitor failures in the Power supply section . Find someone who works on amps or TVs to have a look see.

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Sounds like your fuse is rated too low, try a heavier fuse or search Retrevo Manuals.com and you may find a manual.

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I just bought a cvr kicker 10' sub, hooked it up in my car replaceing a polk audio sub. The kicker keeps blowing my fuse. i have checked the wireing. i have an 800watt sony xplode amp. Please help


i am assuming that you bought this sub used? their could be a problem with your voice coil. the voice coil moves the cone of the speaker in and out. the problem with the voice coil is that it has become lose and is doping the impedance of the sub. A lose voice coil can be cause by over powering the sub. this problem is not fix able.

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My PSW111 started blowing fuses this week. When I put in a new fuse it blows right away. Went through 4 of them today.


The reason a fuse blows is due to some semi-conductor device now acting like it was a piece of wire. The thing could be either in the power supply part or the main amp device. If you see something like a transistor or IC that's been getting hot or is damaged that will be the culprit. If all OK, If I was you, I would replace first the main part for the amp section. It might be the biggest or on a heatsink.

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Blew a fuse what kind dose it take is it a slow blow fuse or fast blow one,i took out the old fuse and it reads le.3a/250v is it a 3a or .3a


It is a 3A/250V fuse, also known as a 6A/125V fuse.

Power amps generally have slow blow fuses.

If this is helpful, please be sure to hit the "Thumbs-Up" for me!

Jan 24, 2010 | Polk Audio PSW202 Subwoofer

1 Answer

I have polk amp that is powering 2 12' subs but itis flashing up with low amp/short light with a little buzz noise?


you must check your wiring from head unit back to subs even take subs out of box to make sure no wires are lose 99.9 of the time a wire has come lose which can be bad if your bridging sups as it changes ohms with 1 or 2 subs hope that helps oh and check volts from you batt and check volts at fuse spots and after fuse to make sure your geting at least 12 to 14 volts cheers i just had a ***** of a prob my subs worked but **** bass found out head unit sub out craped out

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Polk Audio PSW 350 sub has no power


Hi, Just call the parts line at Polk Audio. They should have the fuse. You can also ask for technical if you're not sure of the problem. Here's the number for Polk: 800-377-7655 Good luck to you.

Dec 30, 2008 | Polk Audio PSW350 Subwoofer

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