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Subwoofer won't power on, but if I remove and reinstall the fuse, the power LED comes on but immediately fades. What is the problem?

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How do i fix my infinity entra 10 inch 150 watt powered subwoofer. fuse is good, green led is on so it is getting power


Best to start at the beginning. You have it connected properly? Are you using the line level, direct or speaker inputs? What output on your receiver are you using?
Have you adjusted the volume control?
If you have everything correct, are you the original owner? It's an older model so if you are the original owner what happened when it stopped working? Noises, fade out, just wouldn't turn on one day.

Are you capable of doing some minor electrical work? Can you read a schematic? Can you recognise electrical parts? If the answer to any of these last three questions is no, you need to take it to someone that has the ability to do electrical repairs. If the answer to all three is yes you can fix this yourself.

Feb 08, 2016 | Infinity Entra Sub Subwoofer

1 Answer

I have an Altec Lansing 340 speaker system that is not working.


There could be a defect in the connector. Check both sides for continuity.

Jan 03, 2015 | Altec Lansing Audio Players & Recorders

1 Answer

Subwoofer wont play!!


first clean your board.ok.....same problem......?remove chargin connector

Jun 14, 2013 | Audio Players & Recorders

1 Answer

Describe your Venue SUB10 Subwoofer Problem: The subwoofer won't turn on at all. The red light doesn't even come on. Could it be the fuse in the subwoofer? If so, where is the fuse located?


You can remove the screw near the volume knob and the screw near the on/off switch - then slide out the amp remove the black and white wire - then check the fuse - if its blown look for we repair amps - ebay - if its good then it probably still needs work - it should turn red when plugged in and no signal and green when signal is present - which means amp is on.

Sep 11, 2011 | JBL Venue SUB10 Subwoofer

1 Answer

Subwoofer will not play with other speakers


Hello

It looks like you have posted this before. Unfortunately, I don't know what you have tried so I may be repeating some of your earlier troubleshooting.

The subwoofer needs its own power supply to function properly. if it isn't getting enough power, the sub will not work at all.

On the back of the unit, you should see a green LED when the power is turned on. Is this light on all of the time of does it fade / flicker? This would indicate the power supply is going bad and you need to replace it.

http://forums.creative.com/t5/Speaker-Systems/GigaWorks-S750-power-problems-green-LED-faded-and-flickering/td-p/547311;jsessionid=9B7C9D2D939336148A9036D7E7D18A12

Apr 30, 2010 | Creative Labs Gigaworks S750 Computer...

1 Answer

Powered subwoofer keeps blowing its fuse


The amp is blown. You need to get it in for service. No telling exactlly what is wrong untill it is opened. 215-736-8055

Jan 15, 2010 | Onkyo Bass Reflex Powered Subwoofer...

1 Answer

Power Light, Pulsating Level Control, Blows Fuses


you may of caused a short in the connections or it got moisture why in storge if so the hole subwoofer is screwed

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2 Answers

Sub is blowing fuses!! :(


The issue is most likely a short in the amp internal circutry where power is essentially flowing without resistance acrosss the short. You may or may not have sound or crackling noise as it depends on where the short is.

If you are electronically inclined, I suggest the folliowing:

- disconnect all power and open the amp up
- look for any burn marks around the circut board and parts.
- first focus in on the area where the power comes in - see if any diodes (black cylinders with stripes on them) are burnt / cracked
- next have a look at all the MOSFETS. These should be 3-legged components and will likely be mounted to the shell or heatsink. Look for any burn marks or cracks on these.
- also look for any wire or component that may be shorting other components. Generally all wires should have shielding and all components should be soldered firmly. Anything crossing other components could be a problem.

If you find any burnt/cracked components, they will need to be replaced.

Here is a sample image showing the MOSFET chips to the top and bottom on the aluminum rail.
http://memimage.cardomain.com/ride_images/3/2514/3981/31284490262_large.jpg

Apr 16, 2009 | Infinity BASSLINK Car Subwoofer

2 Answers

AR1 Subwoofer Keeps Blowing the 5 Amp Fuse


Well, so far so good. I reinstalled the newly repaired amp and fired it up and so far, so good. Ran it through about an hour of fairly intense break-in tracks and then ran it through about 2 dozen power up and down cycles to try to get it to fail (better now than a month from now and have to fight them on backing it up).

Jun 01, 2008 | Acoustic Research AR1 Speaker

2 Answers

Onkyo subwoofer not working


I fixed my subwoofer. The resistor at R16 (right next to the fuse) was the fried component. I removed it and replaced it with a 13K ohm 5 watt metal oxide resistor (from Mouser Electronics if not available locally). Works fine now. I got the solution and the circuit schematic from an audio hobbiest at diyAudio.com. This is, evidently, a fairly common problem.

Sep 17, 2007 | Onkyo HT-S780 System

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