Apple + HP Hardware Questions Here!

pkphilip

I am happy to announce that I am factory certified to service all Apple and HP computer systems locally.

Still, I am not tech support. I am just the technician to deal with all in/out of warranty service on behalf of the manufacturers. If you suspect you have hardware issues, please feel free to post here.

Toshiba will be coming soon....

Philip
Apple Certified Macintosh Technician (ACMT), HP Master Tech

lerico

My 3 months old 24" iMac 2.8Ghz is having problem with the LCD monitor recently. After the computer warms up, the bottom half of the LCD backlight starts to flicker (going up and down between one level of backlight brightness) every second or so. It's very noticeable in a white screen. Only on the bottom half of the screen.

Definitely looks like hardware problem. Do you know what is involved and usually how long will it take to fix it?

Hyde

which bestbuy u work at?

nagaki

My Macbook Pro's Gigabit Ethernet LAN port just suddenly stopped working, do you know what might be the cause?  Do you know how I could fix it? >_<

Thanks!

pkphilip

原帖由 nagaki 於 2008-3-23 09:21 發表
My Macbook Pro's Gigabit Ethernet LAN port just suddenly stopped working, do you know what might be the cause?  Do you know how I could fix it? >_<

Thanks!

Reset PRAM and SMC first.

PRAM: Press and Hold Command, Option, P, R together when you hear the start-up chime. You will hear a second chime if done right.
SMC: http://docs.info.apple.com/article.html?artnum=303319

We need to find out why it is not working. When you use Network Utility, do you see a Green dot next to the interface name? If there is the interface name, that means the system detected the presence of Ethernet port. You can try to plug in your internet ethernet cable and wiggle it to see if the dot will turn green.

If you wiggle it and it connects, the mainboard has to be replaced.

Philip

[ 本帖最後由 pkphilip 於 2008-3-23 21:33 編輯 ]

pkphilip

原帖由 lerico 於 2008-3-22 19:14 發表
My 3 months old 24" iMac 2.8Ghz is having problem with the LCD monitor recently. After the computer warms up, the bottom half of the LCD backlight starts to flicker (going up and down between one leve ...

You can try to reset the Parameter RAM first by holding Command (Apple) + Option + P + R keys together as soon as you hear the start-up chime. If done right, you will hear the start up chime a 2nd time. This will reset the hardware settings and force the system to re-detects hardware and generally would fix most power issues.

You can also try to reset the SMC by following Apple's document: http://docs.info.apple.com/article.html?artnum=303446

Finally, make sure you have the latest Apple's Update because there was a new firmware to fix video issues on iMac.

AppleCare Service News does not have the issue you described, so it is just something out of the ordinary. LCD should never flickers anyways, in that case, a new LCD panel and inverter will be required. However, I've seen cases where the PSU and the mainboard have to be replaced because of power issues.

Apple requires ASP (us) to keep the computer during the time of repair. That means from the day you bring in your computer, do diagnostics, order parts, install parts and verify the issues. Judging from the complexity of the issues you are having and the length of time Apple ships us the parts, I would expect 2 weeks turn around time. (We don't stock any Apple parts... everything is shipped to us based on needs). Needless to say, the 24" iMac is not something that is easy to take apart and put back easily.

My suggestion is, if you cannot live without the computer. Wait until you are not too busy and bring it in.

My work place is in Vancouver, other than my store, there are Simply Computing (don't go there) and DMac in Richmond that can do repair as well. Send me a PM if you want to contact me.

Philip

[ 本帖最後由 pkphilip 於 2008-3-23 21:31 編輯 ]

MiGkYo

i agreed w/ Philip! I got a 24" 2.8G iMAC and used to have problems w/ the flicking... but now i updated it and the problem is gone!!!

lerico

原帖由 pkphilip 於 2008-3-23 21:27 發表


You can try to reset the Parameter RAM first by holding Command (Apple) + Option + P + R keys together as soon as you hear the start-up chime. If done right, you will hear the start up chime a 2nd t ...

Thanks Philip, reseting the parameter RAM works. :-)

pkphilip

Intel Mac does not have BIOS, they have EFI, so reset PRAM and SMC should address some hardware issues.

Philip