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papichulo's picture
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Joined: 2018 Feb 21
Powerbook 145b

Hello i just got a 145b off ebay and it wont work. The thing turns on without battery but the screen is blank and sad mac chimes turn on. How do i fix it? Is it a power or age thing?Thanks

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MikeTomTom's picture
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Joined: 2009 Dec 7

How many chimes when trying to power on? 4 or 8?

papichulo's picture
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Joined: 2018 Feb 21

Its 8 chimes

MikeTomTom's picture
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Joined: 2009 Dec 7

According to Apple's symptoms chart for this Mac, this is RAM related.

RAM failure occurs (eight-tone error chord sequence sounds after startup chord)

  1. Replace RAM expansion card.
  2. Replace daughterboard.
  3. Replace motherboard.

The steps above are meant to be undertaken sequentially, 1st followed by the 2nd if the 1st fails and so on. Tho' you might be able to clean & salvage something in those areas without needing to replace any parts.

Download for this Mac's take-apart manual:
http://tim.id.au/laptops/apple/powerbook/powerbook_140.145.b.170.pdf