Archive for the ‘Fixed’ Category

Reduce power supply acoustic noise on Lenovo T510

Monday, October 25th, 2010

Many users have complained of acoustic whining noises coming from their shiny T510 laptops. Mine did it too. It was a bit of a disappointment, as otherwise, the machine is very quiet.It was bugging me so much I decided to do something about it. A few screws removed, and an added capcitor, and the noise is (mostly) gone – it’s certainly HUGELY quieter. I have some other plans that should illiminate it completely, but for now, here’s the mod:

Stop the T510 wheedling noise!

That’s a 1000uF 25v cap in some heat shrink soldered between the 20V dc near the switching converter and the ground on the catch diode of the same.