Question about Infinity BU-80 Speaker

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Infinity BU-80 with a blown capacitor on the board. Anywhere I can buy a new board?

Posted by Anonymous on

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3 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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  • 153 Answers

SOURCE: sub goes full blown loud when plugged in to wall

It sounds like a power supply failure. It needs to go to a repair shop.

Posted on May 05, 2009

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canwoodjc
  • 3301 Answers

SOURCE: Bought new Infinity 8" speaker

hook them up and play something,, the speaker should bounce "out" on bass sounds, if it pulls "in" switch the wires

Posted on May 04, 2011

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2 Answers

Bought new Infinity 8" speaker


hook them up and play something,, the speaker should bounce "out" on bass sounds, if it pulls "in" switch the wires

May 04, 2011 | Infinity BU-1 Speaker

1 Answer

My son and I both own Infinity BU-120 subwoofers, and both exhibit the same problem. Fuse is blown, and the C6 capacitor is blown apart -- literally. I was told to replace that capacitor with a 10mfd,...


Msullivan56 & son,

Yes indeed... We are on luck...

There are circuit board layout drawings...
on my Favorite FREE "manual" site ...
starting on page 20
(SHOWING POLARITY)...

Plz click here...

Infinity BU 120 Service Manual Amplifier subwoofer Bu 120 hts

Hope this helps...

My First "experience" of getting soot embedded in my SAFETY GLASSES... WAS PLACING OF A MODERATE SIZED
"POLAR" filter capacitor in a pretty large RECTIFIER PANEL...

I HAD FOLLOWED the Circuit Drawing ...
(arguably correctly)
as there was very little of it left)) when
POWER WAS RESTORED ... (sort of)

I came out of the EXPERIENCE WITH AN ENDURING
respect for SAFETY GLASSES... looking rather
like a Raccoon (I'm just saying).

Wear them...!!


Carnac the Magnificent

Jul 25, 2017 | Infinity BU-120 Subwoofer

1 Answer

No sound coming from my Infinity BU2 subwoofer. Powers up, light comes on, relay clicks, and nothing.


I suspect that whatever semiconductor does all the amplifaction has departed this life. If you check the PC board it might point to a burnt out part or a blown one. If not look at anything big or with a heatsink on it.

Feb 01, 2010 | Infinity BU-2 Speaker

1 Answer

Sub goes full blown loud when plugged in to wall


It sounds like a power supply failure. It needs to go to a repair shop.

May 05, 2009 | Infinity BU-2 Speaker

1 Answer

SUB WOOFER PROBLEMS


design u r aucostics properly

Jan 10, 2009 | Infinity BU-80 Speaker

1 Answer

Infinity Entra Sub 150 no sound or power


I had the same problem. When I opened it up, the fuse was blown, and it was a pain to find the fuse it needs (3 Amp, 250 V slow-blow fuse, 5x20 mm). Also, the 2 large electrolytics (big purple things near the amp) and one small capacitor were all blown. For 4 fuses, bought seperately from, and the 2 electrolytics and 1 capacitor, it cost about $20, plus almost 20 more in shipping, which still isnt bad considering the original price of the sub. However, the tricky part is that you have to know how to use a soldering iron to take out the old components and put in the new ones.

Jan 01, 2009 | Infinity Entra Sub Subwoofer

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