Model A1181: 1.83, 2, 2.1, 2.13, 2.16, 2.2, or 2.4 GHz Core 2 Duo processor

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Trouble finding backlight fuse? Please Help!

Been looking for two days now on forums and tinternet but have only found detailed descriptions for MBP.

BACKGROUND Am trying to fix my mums Macbook for her as she is on a budget and has already wasted money replacing a screen that didnt need replacing.

The screen went dark one day last year.My brother(having experience building desktop PCs) changed the screen for her,which worked perfectly until he closed the lid and damaged one of the inverter cables resulting in a popping sound and the screen going dark. Holding a torch up u could still see the screen working and all appeared fine on an external monitor. He bought another screen and tried to rectify his mistakes but to no avail. The inverter was named as the problem by a local laptop repair specialist who ordered and fitted a new inverter but still the backlight does not work. So it has found itself to me. I have a bit of experience in fixing laptops and iphones and have been researching my options. Have tested all of the inverter cables, all appear to be fine. it has a new inverter. I also tested another new screen that was available to no avail. My thoughts are that the backlight fuse has blown during the inverter cable damage(which was replaced). I was hoping to either replace the fuse or just cross solder the points if that is possible. Trouble is I cant find any description of the location of the fuse. Anyone got any advice?

Think my serial number isw8828keq0p1

many thanks in advance

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Oliver Lycett, do these look like the specs for your computer :" 2.4 GHz Core 2 Duo (T8300)

Intro Date: February 26, 2008 Disc Date: October 14, 2008

Order No: MB403LL/A Model No: A1181 (EMC 2242)

Subfamily: Early 2008 Model ID: MacBook4,1

Std RAM: 2 GB Std VRAM: 144 MB

Std Storage: 160 GB (5400 RPM) Std Optical: 8X DL "SuperDrive"" ?

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Yep thats the one

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I've never been aware of a "backlight fuse" on A1181s. It's primarily the unibody machines that have those.

You mentioned the inverter cable "appears" to be fine...have you witnessed it working? Don't assume -- seeing it function is the only way to be sure it's good. If you've seen it working, and you've also seen the screen working in another machine (inverters themselves almost never go bad), it's probably the board itself. Again, I've never known an 1181 backlight fuse to exist...I'm not saying there isn't one, but if there is, it's been awfully well hidden from the repair community. So you'll probably need a replacement board.

Just as a rule of thumb, when A1181s have no backlight, it's usually the screen, then next most common is the inverter cable, then the board. I've never run into a bad A1181 inverter.

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Disagree with rdklinc

Inverters fail ... like most electronic components, but given that its a high voltage device, it stands a marginally increased risk of doing so. I've a drawer full of them as evidence.

Without question, in this order... 50/50 chance of it being either the cable running through the hinge or the inverter itself.

Or, the likelyhood of anything arbitrarily going pop on the logic board is pretty slim... but, it could happen, so this would be you last resort.

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Oliver Lycett will be eternally grateful.
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