powerbook 140 problems

3 replies [Last post]
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Joined: Jun 29 2009
Posts: 60

i got this computer from a friend's dad, and it does not boot w/ its power supply, so i tried another power supply and it kind of worked. it turned on and started humming from the speaker, and the screen started to display horizontal lines going up and down the screen, but nothing else happened. also, it will not work if the battery is in the computer. if it is it turns off immediately. i have no experience fixing a mac this age, and would like to learn how.

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I have to many Macs and to little room... but I must keep collecting.

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JRL
Offline
Joined: May 30 2009
Posts: 15
hmm....

those lines most likely mean bad RAM (in my experience)

Do you have a Torx T-10 driver? if so, you can open it up and remove the RAM card.

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Plus (Micromac '030 accelerator), SE x2, SE/30, Classic, Classic II, LC x4, LC II, LC III, P460, LC 475, LC 575, Performa 575, Performa 630, Color Classic, II, IIci (PowerCache), IIsi, 150, 160 x2, 165c, 170, 180c, 2300c, 520c, 540c (official PPC upgrade), 5500, 6360, Duo Dock, 7100, iBook 366, MB '08, MBA '13

Offline
Joined: Jun 29 2009
Posts: 60
it does not seem like bad ram

it does not seem like bad ram, it does not make the single, long beeb, instead it makes a humming? noise the entire time it is on.

__________________

I have to many Macs and to little room... but I must keep collecting.

JRL
Offline
Joined: May 30 2009
Posts: 15
Nope....

Nope, I'm pretty sure it's bad RAM. Functioning RAM is required for the startup chime.

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Plus (Micromac '030 accelerator), SE x2, SE/30, Classic, Classic II, LC x4, LC II, LC III, P460, LC 475, LC 575, Performa 575, Performa 630, Color Classic, II, IIci (PowerCache), IIsi, 150, 160 x2, 165c, 170, 180c, 2300c, 520c, 540c (official PPC upgrade), 5500, 6360, Duo Dock, 7100, iBook 366, MB '08, MBA '13