[Ian]

I've had a problem with my speaker system for quite a while now, but its not becoming too much of a problem.

I have the ABit SP60 speakers, and after getting back from uni they sounded great (I hadn't used them in months). After about 2 hours they started to lightly hum, and now a day later its loud humming and crackling... it does this until I leave them for a few days!? What on earth could be up? I doubt it is the satellite speakers as they work in other things, but the problem is coming from the Amp/Sub unit.

[Quadophile]

Why did the amplifier hum?

Answer: Because it did not know the words!

That was just to cheer you up!

As for humming, my experience says it could be the transformer in the sub unit which is faulty. If so, I am afraid you will need to replace it.

I am afraid there is very little I can do on the forum to rectify the problem since it needs to be physically checked.

I am hoping all the connections are done in the right way? At times the simple problem is because the wiring is not done right.

Let me know if it is so and you problem is hopfully due to this only.

[Ian]

lol - that joke got me

Its all wired up correctly (unfortunatly!), so it can't be that... Is it probable that it is the transformer causing that? I might open it up and see whats inside

[Quadophile]

I cannot think of any other reason for the humming sound. If you open it up the first thing you should check is if the transformer is securely bolted down, a loose screw can also get the transformer to hum at times.

I was curious to find out what was inside your sub unit so did a bit of Google search and found an article which gives a good view of the inside.

The innards of the sub unit!

[Ian]

Thanks Quad

I'll take a look now Lets just hope there are no nastly large capacitors in there

[Ian]

Ummmmmmmm... I took it apart... nothing was out of place, but tightend the screws.... no luck

[Quadophile]

Sorry to hear that

Can you contact the outlet and get the folks to let you know what could be the possibaly wrong?

How about contacting Abit themselves and getting some feedback?

I am just keeping my fingers crossed!

[Ian]

I'll send Abit an E-Mail and see whats up

Thanks again for your expert advice and help Quad

[Quadophile]

Sorry about that

I do not want to do any guesswork and come up with a dozen new things as that is not the right thing to do.

I keep my fingers crossed, your best bet could be the suppliers themselves. They sure have a vast database of feedback and they may just have a clue as what could be wrong.

[1nteger]

Ian
By the time you read this you may have already sorted out your humming speakers problem. Just thought I'd mention that I had an identical problem with a pc a couple of years ago. Eventually. I ended up opening the machine and cleaning it...I used a compressed air cannister around everything. However, I also re-installed windows. After I put the machine back together the humm and crackle had gone completely...and I still haven't got a clue what it was that caused it. While my system was pretty dusty inside, I vaguely remember testing it after cleaning and the humming was still there, so I conviced myself that it was the OS re-install that sorted it...but who knows?

Another thought: are the speakers positioned near a wall that has either...electrical power lines running through or some electrical thingy on the opposite side in the next room?

You can tell by the nature of these suggestions that I don't know much about sound systems and stuff! But hey, if the techy stuff fails, it never hurts to get a duster out