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PowerBook G3 Lombard power problems
Posted by: ikethederg on 2023-03-12 15:50:03
I recently acquired this PowerBook G3 Lombard 333mhz for $50 with an iBook g3 800mhz.
The Lombard has no response when powered on besides a repeating buzz from the power board under the track pad.
I have removed every modular component and inspected the motherboard for corrosion and have removed the PRAM.
Here's the MP3 recording of the sound
20230312_174830.jpg
Posted by: Nixontheknight on 2023-03-12 17:24:22
I recently acquired this PowerBook G3 Lombard 333mhz for $50 with an iBook g3 800mhz.
The Lombard has no response when powered on besides a repeating buzz from the power board under the track pad.
I have removed every modular component and inspected the motherboard for corrosion and have removed the PRAM.
Here's the MP3 recording of the sound
View attachment 53566
I know this might not help, but try checking out the logic board for shorts
Posted by: ikethederg on 2023-03-12 18:53:56
I know this might not help, but try checking out the logic board for shorts
I do not have anything to check it with, but there are no burn marks, and the PMU gets warm as well
Posted by: ikethederg on 2023-03-14 14:19:33
I may end up throwing this laptop away
It's in poor shape (top lid, bezel and hinges are busted beyond repair)
Posted by: MacUp72 on 2023-03-15 01:46:35
strange buzzing noise..when you reassamble it completely does it change? are there parts missing? power adapter ok?
Posted by: joshc on 2023-03-15 02:12:23
Try with a different power adapter.
Posted by: MacUp72 on 2023-03-15 03:00:51
when I lacked one of those older power adapters I just modded a newer G4 one, I bent the outer metal ring some mm and with some wiggling my 1400 started up, every time..temporarily this works for testing.

IMG_0820.jpg
Posted by: ikethederg on 2023-03-16 16:30:50
Would a white Apple charger still work (the ones that came with the ibook g4)? And would snipping the metal work? The center pin i
Posted by: 3lectr1cPPC on 2023-03-16 18:54:16
If you can’t get it working, don’t throw it out. Someone will need a keyboard or other part that’s ok, like the LCD panel itself. Throw it up on eBay or the forum trading post for cheap, that way the useful parts get saved.
Posted by: ikethederg on 2023-03-16 18:56:33
If you can’t get it working, don’t throw it out. Someone will need a keyboard or other part that’s ok, like the LCD panel itself. Throw it up on eBay or the forum trading post for cheap, that way the useful parts get saved.
I've tested the RAM and Hard Drive and they work
Posted by: 3lectr1cPPC on 2023-03-16 19:00:27
Yeah those parts too. Less value then the screen or keyboard, but those parts are definitely useful too.
Posted by: ikethederg on 2023-03-16 19:01:04
Yeah those parts too. Less value then the screen or keyboard, but those parts are definitely useful too.
I don't know if anything else works, that's the problem.
Posted by: s_pupp on 2023-03-16 19:16:31
There is definitely a market for broken PowerBooks. I just bought a broken Lombard myself for the parts.
Posted by: 3lectr1cPPC on 2023-03-16 19:46:30
I don't know if anything else works, that's the problem.
You can be pretty sure that the keyboard is ok, not positive, but pretty sure. Same goes for the LCD if it isn’t obviously cracked. I wouldn’t part it out and sell those parts separate, but you can sell the whole unit for parts and get some money back on it.
Posted by: ikethederg on 2023-03-17 19:31:26
when I lacked one of those older power adapters I just modded a newer G4 one, I bent the outer metal ring some mm and with some wiggling my 1400 started up, every time..temporarily this works for testing.

View attachment 53656
The pin seems too small, and I can't get it to fit even with more bend than that.
Posted by: MacUp72 on 2023-03-18 03:26:33
yeah, the inside pin is thinner than from the older G3 adapters, you have to wiggle it a bit around in the DC jack, eventually it starts..
this is a temporary testing solution of course if you dont have any other power adapter at hand.
Posted by: ikethederg on 2023-03-18 09:42:51
yeah, the inside pin is thinner than from the older G3 adapters, you have to wiggle it a bit around in the DC jack, eventually it starts..
this is a temporary testing solution of course if you dont have any other power adapter at hand.
does it need the outer metal rim? since there's a center ground on the inside pin.
Posted by: treellama on 2023-03-18 13:11:39
This is what I use for the clamshells, along with a generic 24V supply: http://www.bixnet.com/cntc11.html
Posted by: s_pupp on 2023-03-19 10:51:27
This is what I use for the clamshells, along with a generic 24V supply: http://www.bixnet.com/cntc11.html
I just bought one of those myself.
Posted by: ikethederg on 2023-12-30 16:20:15
Update- new display housing obtained for cheap and found a cheap original m4402 power supply- wondering if it's dangerous since I heard those had recalls
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