Archive for April, 2006

MacBook Pro Display Inverter Hum

Saturday, April 8th, 2006

I just wanted to post a note that will eventually be caught by the search engines for other people to find. I have a MacBook Pro 2.0 GHz with a W8607 serial number. The most noticable noise that I have encountered is the display inverter which appears to be caused by a less than solid connection to the case. At times, the hum from the inverter gets very loud, but I can immediately resolve the problem to almost unnoticable levels by firmly tapping on the display hinge on the right side of the unit. A switching inverter constantly oscillates, and it appears that the inverter oscillations are being amplified by the case similar to the manner of how a speaker voice coil transfers oscillations to the speaker cone. I’m tempted to open the laptop to see if I can tighten things up around the inverter or otherwise rectify the problem. If I do, I’ll be sure to post my results.