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Resuscitating a dead Pismo

Submitted by davidgordon on February 3, 2006 - 9:05am. PowerPC Macs

I've read a couple of posts here which are helping me see if I can get a dead Pismo back to life. Briefly, its sat around without a battery for a year or two and shows no sign of life when I try to start it up. Advice here suggests the PRAM battery is flat, leave the Pismo connected for a day/two days and it will be fine.

While this is happening should I expect the orange/green light on the power lead to show a colour? It doesn't at the moment. I know this is a good lead as its used on an iMac where it shows orange or green as expected.

Thanks!

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gobabushka's picture

My two cents...

Submitted by gobabushka on February 3, 2006 - 2:19pm.

I had the same problem with mine, What I did was to just disconnect the pram battery. When I did that, it started right up.

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dankephoto's picture

re: orange/green light

Submitted by dankephoto on February 3, 2006 - 6:26pm.

What sort of power supply do you have that has a orange/green light? I'm aware of none for the Pismo-style connector.

The battery's lights may blink or begin to light up though.

dan k

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Re: re: orange/green light

Submitted by davidgordon on February 3, 2006 - 6:37pm.
dankephoto wrote:
What sort of power supply do you have that has a orange/green light? I'm aware of none for the Pismo-style connector.

Its the yo-yo type power supply. The light is in the connector which goes into the PB. Came as standard when new and is the same as the one for the iBook clam shell 266 special edition. Maybe its different from that supplied wherever you are, I'm in the UK.

Quote:
The battery's lights may blink or begin to light up though.

The battery went missing some years ago. The PB was running on mains power.

Thanks!

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dankephoto's picture

re: orange/green light

Submitted by dankephoto on February 3, 2006 - 10:20pm.

Heh heh heh . . . s'what I figgered Grin

That adapter doesn't have a orange/green light built in to its plug. Yer thinking of the ring around the Clamshell's power input jack that glows orange and green.

dan k

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If the Pismo is similar to th

Submitted by Peter Frederick on March 19, 2006 - 3:32am.

If the Pismo is similar to the Wallstreet, you will have fits with the power manager getting corrupted unless you have a good battery, reguardless of the condition of the PRAM battery. I re-celled a battery for my Wallstreet, and that cured my similar problem.

When one of these things sits around long enough for the main battery to go completely flat, they won't boot even with mains power until the PRAM battery is at least partially charged. overnight usually fixes that. However, the problem recurs regularly until the main battery will hold a good charge. I think the dead battery corrupts the power manager, and you must reset it to get the powerbook to boot. I believe the Pismo has a button on the back panel for a power reset. Push that for a couple seconds, and you should get the power reset activity (fan comes on, chime, sleep lamp illuminates). Wait at least 5 sec after the lamp goes off, then press the power button.

Peter

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