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- Jan 24, 2011
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- Location
- New York City
- Your Mac's Specs
- Late 2010 Mac Pro 5,1 with 3.33Ghz 6-core, and 16GB RAM
Hi All,
I have a 2.16GHz Core Duo MBP and the LCD screen is making a humming / buzzing noise. If the display brightness is greater than 50% the buzzing stops and if it completely dark it stops, but from say 1% to 50% the buzzing gets worse the lower you go.
I took apart the screen and installed a brand new display inverter board. That helped and was good for about a week, but it's happening again. I'm trying to figure out if the inverter board I got was bad, or if it is something else, maybe the bulb, or otherwise.
Any recommendations?
Some questions to pose...
Are there any voltages, etc., to check on the boards somewhere to diagnosis the issue?
If it is the bulb, do I need to replace it or can it be tuned; are they expensive?
Anything else I might check into?
Thanks for the input.
Paras.
MacBook Pro, Model A1175, 2.16GHz Core Duo, 2GB RAM, OSX 10.6.6, EFI Firmware 1.2
I have a 2.16GHz Core Duo MBP and the LCD screen is making a humming / buzzing noise. If the display brightness is greater than 50% the buzzing stops and if it completely dark it stops, but from say 1% to 50% the buzzing gets worse the lower you go.
I took apart the screen and installed a brand new display inverter board. That helped and was good for about a week, but it's happening again. I'm trying to figure out if the inverter board I got was bad, or if it is something else, maybe the bulb, or otherwise.
Any recommendations?
Some questions to pose...
Are there any voltages, etc., to check on the boards somewhere to diagnosis the issue?
If it is the bulb, do I need to replace it or can it be tuned; are they expensive?
Anything else I might check into?
Thanks for the input.
Paras.
MacBook Pro, Model A1175, 2.16GHz Core Duo, 2GB RAM, OSX 10.6.6, EFI Firmware 1.2