On Sep 15, 2004, at 10:44 pm, Ian Nixon wrote:
Hi people...
I have a PowerBook 165 that when you power it on, you'd be able to see everything in it, but the CONTRAST is going up and down on its own (NOT the Backlamps).
It does this MOSTLY through the boot up process, but lots of other times, also.
Any ideas?
Most likely the interconnect board that sits under the brightness/contrast controls and handles the screen data/power, speaker, mic (if it's got one), brightness/contrast sliders, and also holds the PRAM battery. It is all linked to the main boards (in the lower half) by a large ribbon. They are renowned for failing in all Powerbook 1x0 models.
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