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I’m trying to troubleshoot my backlight portable 5126. I can see activity on the CPU, what seems to be the right voltages on the board. I’m getting no chime, but I’m also getting a black screen. The backlight is on, there is a clear border. It looks like maybe the DISP_BLANK is on, or the...

I have been working on my Mac Portable 5126 for a while. I built and new battery, recapped it, and it worked for one boot. Put it back together and I started getting power manager errors. Looked for broken traces and found a couple. Repaired them with bodge wires and….now only get a black screen...