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Mid 2009 Model A1278 / 2.26 or 2.53 GHz Core 2 Duo processor EMC 2326

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Why can I not click by pressing down on my trackpad

I have a 13" macbook pro, first unibody model from 2008 (2 gb ram, 2.26 ghz, 160 gb).

I used to run it on snowleopard untill recently. i could not press down on the trackpad to click. after clicking about 10 times, the laptop registered only 1 click.

But the trackpad was fine otherwise, it could sense my gestures and taps just fine.

i had the touch-to-tap option turned off, but i had to turn it on to use the laptop.

As my laptop was under warranty, i took it to the service centre. the guy opened up the laptop and said the trackpad was fine, he asked me to erase the hdd and re install the OS.

I did and my laptop was fine again

That was 3 weeks ago. now my laptop cannot click when i press down on the trackpad again. i run leopard 10.5.8 now. please help.

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The 2.26 was 2009:

Apple MacBook Pro "Core 2 Duo" 2.26 13" (SD/FW) Specs

Identifiers: Mid-2009 13" - MB990LL/A - MacBookPro5,5 - A1278 - 2326*

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Introduction Date: June 8, 2009 Discontinued Date: April 13, 2010

Please give us the last three letters of your serial number. This machine may still be covered under warranty. Take it back and make sure there is a record of your returning it. I would take out AppleCare to extend my warranty. If it's doing the same thing with 10.5.8 as 10.6, try upgrading to 10.6 again.

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I had the same problem with my trackpad. When I got it the physical click was a bit difficult to register (I had to click hard to have it register). Now a year and a half later it's just worse. I practically have to mash it down with an uncomfortable amount of force to make it register.

I would think if it makes the "click" sound it should be registering but this is not the case.

I read somewhere that you can adjust the sensitivity by a torx screw on the bottom of the trackpad. By opening the MBP and removing the battery I see a torx screw but I don't have a bit to fit it.

I do not believe this issue is a software issue. It happens in Leopard, Snow Leopard, Windows 7, and Ubuntu.

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