Laptop hum-Any Ideas?

[scoopd]

It may be a coincidence but i put my laptop(Acer) in a few months ago to get a new jack socket fitted as it had become loose.Since around that time I have been getting loud digital interference therough my internal and external sound cards.The only way I can describe it is "sounding like a digital scanning noise when you move the mouse pad etc."

Just wondering if it's possible it's not been re earthed properly or what the problem could be?

When you run on battery the hum/digal noise disapperars.

Any ideas woule be greatfully received

[Vectis]

Splash a couple of quid on a Ground Loop Isolator and all will be well.

Craplins do an overpriced one; fleabay if you can wait a few days.

[Tony Scott]

It may be a coincidence but i put my laptop(Acer) in a few months ago to get a new jack socket fitted as it had become loose.Since around that time I have been getting loud digital interference therough my internal and external sound cards.The only way I can describe it is "sounding like a digital scanning noise when you move the mouse pad etc."

Just wondering if it's possible it's not been re earthed properly or what the problem could be?

When you run on battery the hum/digal noise disapperars.

Any ideas woule be greatfully received

Sounds like a ground loop isolator is required? have you considered that? http://www.audiomate.co.uk/proddetail.php?prod=B070

have you recently got a new power supply for the lappy?

[scoopd]

Cheers guys. I'm sure I have one somewhere but had stopped using as had no need for it(then!) but I do now.

Thanks again

[Shakermaker Promotions]

I purchased one of them on the recommendation from someone on here and it's great. Does the job so no more humming!

[DazzyD]

Hi Scoop.

Getting noise interference with Acer laptops is not an uncommon problem. I've had 3 Acers now and they have all suffered from the same problem. The latest, an Aspire 5920, is a stunning piece of kit but required an external soundcard to fix the problem. Recently this went wrong (see my posts here: linky. Dad ordered a couple of ground loop isolators from the net for not much cash and this has fixed the problem. They are amazing bit of kit and I'd recommend to them to everyone!

[gharbud]

if your laptop charger has an earth in the plug cut it out, as you said you dont get it when you run it just on battery, when you have it charging its the earth which is your ground loop problem hense the name, i had the same problem with my sony laptop, just cut the plug off the charger and cut the earh out problem solved

[Vectis]

if your laptop charger has an earth in the plug cut it out, as you said you dont get it when you run it just on battery, when you have it charging its the earth which is your ground loop problem hense the name, i had the same problem with my sony laptop, just cut the plug off the charger and cut the earh out problem solved

Yeah, that's a sensible suggestion..... NOT!

If the brakes on your car were squeaking, would you disable ABS?

[Corabar Entertainment]

...not to mention an immediate PAT fail

(Getting fed up with this old chestnut rearing it's head over and over! )

Please don't mention this suggestion again on this forum. Thank you!

[Charlie Brown]

...not to mention an immediate PAT fail

(Getting fed up with this old chestnut rearing it's head over and over! )

Please don't mention this suggestion again on this forum. Thank you!