Powerbook keyboard problem

[Papichulo]

My powerbook 145b is finally working but now the keyboard only recognizes some keys. I replaced the keyboard twice and reseated the connectors same problem. Sometimes the keys work and now they wont. Is it the keyboard or mabie logic board? Thanks 

 

[beachycove]

Hit the keys harder for a while and see if they revive. Used to work on my Duos....

 

[Papichulo]

Not working i wish it did

 

[beachycove]

Your keyboard or the ribbon cables have to be the likeliest culprit, rather than the logic board.

Oddly enough, I was just working on a dead Powerbook 145. Your’s was dead, I believe. How did you revive it? I have so far failed to get mine to show any signs of life at all.

 

[Papichulo]

What issues you having with it?

Well i ordered a new screen for mine and replaced the inverter board. The thick gray cable was loose and needed be replaced. Also i cleaned the boards and took out the memory card. I already replaced the keyboard but same problem. 

Also that  thick gray cable has to be bent a certain way or it wont boot at all i figured that out the other day.

 

[beachycove]

Mine shows no signs of life when pressing the power on button. The power supply is good -  it will start up a PB160, for example, so it is not the problem.

I may have a spare logic board from a 145b here in a box of parts, so when I get “a round tuit,” I’ll probably try that. It would be less work than fiddling with the fuse.

Was the fuse your problem or that cable you mention?

 

[Papichulo]

I never knew there was a fuse. The problem was the gray cable on the interconnect board were the clock battery is. Also make sure the cable is fitting right when when you put the computer together.