Squealing power brick

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mcvosi · #1 Post by **mcvosi** » Mon Feb 05, 2007 3:30 pm

I noticed a very high pitched squealing sound coming from the power brick for my T60p. If I put my ear up to it, it's fairly loud.

Is anyone else's like this?

Edit: this is with a 90W adapter.

tpribors · #2 Post by **tpribors** » Mon Feb 05, 2007 3:36 pm

I placed the power brick in a window sill and I can clearly hear it too... It also varies in pitch and intensity, but sounds like a random pattern. I can't find anything related to the usage that changes it.

Rebelgium · #3 Post by **Rebelgium** » Mon Feb 05, 2007 5:01 pm

I've got the same here. (also 90W btw)
It's only annoying when i'm in a real quiet invironment...

#4 Post by **K. Eng** » Mon Feb 05, 2007 5:34 pm

This is unfortunately something that power supply manufacturers still have to work on.

My T4x went through 3 power bricks before I got one that was quiet

Scratch · #5 Post by **Scratch** » Wed Feb 07, 2007 8:39 am

It took me 2 returns as well before I got a quiet one.

romka · #6 Post by **romka** » Wed Feb 07, 2007 6:22 pm

I've noticed it only does it when it 'trickles' power - and not full-on charging.

I will be returning mine to ibm in the due-time.

Squealing power brick

Squealing power brick

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