Réparez vos affaires Communauté Boutique

Model PowerBook 1400 Series. Released October 1996

8 questions Voir tout

Options

PowerBook power on woes yet again!

I just replaced the PRAM battery of a touchy PowerBook 1400cs/133, and finally see the green "power" light glowing. I decided to leave it charging overnight to let it get some power, and this morning tried powering it on. The PB doesn't seem to be responding still, and I hear no noise or anything of the sort.

All connections to the mobo are connected properly (VGA, speaker, trackpad, keyboard).

Resetting the PRAM battery doesn't seem to be making much of a difference. The green "power" light keeps glowing, even when the charger is disconnected or the battery is pulled from the PB.

Does anyone have any ideas what could be causing this power oddity? Resetting the PRAM battery via the switch in the back isn't making much of a difference. Should I declare the PB a vegetable or brain dead and send it to the junk pile, or is there a chance of bringing it back to life?

Répondu ! Afficher la réponse J'ai le même problème

Cette question est-elle utile ?

Oui Non
Indice -1
1 commentaire

My 1400 starts every time when I hit the small reset button on the back, the tiny button between the two inputs on the right.

par

Ajouter un commentaire

2 Réponses

Filtrer par :
Les plus utiles Les plus récentes Les plus ancien(ne)s
Solution retenue

Options

Try resetting the PMU. Here's how to do it on your machine: http://support.apple.com/kb/HT1781

Cette réponse est-elle utile ?

Oui Non
Indice 2

4 commentaires:

I've tried that. It's not making a difference.

Perhaps there may be something else at hand here?

par

It's been a decade since I worked on one. Try pulling the battery and starting from the AC only. Check the AC adapter with a voltmeter.

par

Pulling the battery didn't work, either. I'll have to go dig out my voltmeter. Hopefully if it's just a bad AC adapter, then that'll make the rest of the fix easy enough... I just get another one! :)

par

Been a long time for me also. +

par

Ajouter un commentaire

Options

Have you tried pulling the PRAM battery out and then starting up? This worked on my PowerBook G3 Pismo AND it worked with my PowerBook 3400. After the initial start up I can boot up without any issues, however I had to do this to both of them.

Cette réponse est-elle utile ?

Oui Non
Indice 0
Ajouter un commentaire

Ajouter une réponse

LambdaCalculus sera éternellement reconnaissant.
Nombre de vues :

Dernières 24 heures : 2

7 derniers jours : 17

30 derniers jours : 18

Total : 1,705