Chosen Solution

I got a used macbook A1181 2006 Core Duo 1.83 Ghz (32bit- non Estar) and there was a problem, at the begging, on the battery charging issue. I opened the macbook and I found a wrong battery connector / sleep SW component. To be clear: My logic board supports this (Non Estar- 20pins): MacBook Battery Connector/Sleep Sensor (non-Energy Star) I found this (18pins): MacBook Battery Connector/Sleep Sensor (Energy Star) The problem was that, when I insert a battery (original or not) the screen was dimming while (for example) surfing on the internet. So the macbook had not battery support - only by the cable. I supposed adding the 2 missing pins manually could solve my problem. After of many tries of adding 2 more pins and many SMC and PRAM resets, my screen dims (like inverter’s problem) when macbook starts. The only way to open properly without dimming screen is when I reset SMC and start the macbook - and fan is go like crazy!!! (that’s meaning not inverter’s issue) After that I thought to clean all contacts with isopropyl alcohol in any case. I’m trying to find the problem that I caused and I believe that if:

  1. it’s a software issue: is about SMC resets etc
  2. it’s a hardware issue: is logic board power issue P.S. I also give you some photos from (a) the logic board (b) battery / sleep sensor and (c) a video by laptop’s behavior: https://www.dropbox.com/sh/0spkzmkjetys4… Thank you in advance and sorry for my English.

I made to bring the backlight on screen back! I’ve got a multimeter , I also found the schematics and I was trying to calculate the contacts on the logic board nearby the Inverter. By mistake, I brought together two contacts,t he L9400 and the neighbor of it and suddenly I got the light back on the screen!! I do not know if this is a proper way, but I’m thinking of putting a conductive metal between them. Check the photos !! Let me know if it seems appropriate. Thanks in advance

I bought a used Macbook 3.1 and I’ve upgraded to this. The compabilities between the two devices are less that I thought.