powerbook G4 difficile a demarrer

[runacher]

My powerbook is really hard to start .I must press the start button 10 times before it goes.After it runs ok if i'll leave it for a while unused it will stop and i 'll have to restart it again.Looks as something which cool's down inside and need to be warm!
I change the hard disc ,I change the battery from the Pram put a new 3V impossible to find a 3,7 put a friend said it should be ok.
And the problem is still there.
Another friend said it is the lamp or the resistance in the screen? what do you think about it ?
If it is the problem can you send me a schema so i could repair .
May be you have an idea of the problem let me know
Best regards
Daniel

[ch-vox]

hi and welcome

it effectevely could be the inverter card that is your problem.
have you tried to boot only with battery ?
what does the Mac do when you boot without the battery ?
have you tried to reset PRAM and PMU ?

please give us more information.
_________________
Vincent
MacBook Pro Retina 15" mi-2014 Core i7 2,5GHz 16 Go 512 Go (SSD) NVIDIA GeForce GT 750M macOS X 14.5