68kMLA Classic Interface
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| M2785 rebuild | |
| Posted by: macman0512 on 2025-04-28 07:00:57 Hi folks, My Powerbook 5300CE's AC adapter just kicked the bucket. It's outputting random voltages, none of them even getting close to the required voltage to power the machine. I was therefore wondering if anyone has attempted to rebuild one of these (I assume it requires a recap), and what is required to get it going again? Thanks in advance for any advice. | |
| Posted by: A24A on 2025-04-28 09:50:45 For safety reasons, rebuilding a power adapter would not be my first choice. If you so wish, a good quality universal power adapter with a 24 V DC output at 2 A with an appropriate connector (barrel type with centre +) could be an alternative. | |
Posted by: macman0512 on 2025-04-28 10:35:25For safety reasons, rebuilding a power adapter would not be my first choice. If you so wish, a good quality universal power adapter with a 24 V DC output at 2 A with an appropriate connector (barrel type with centre +) could be an alternative.Why's that? I've done multiple desktop PSUs, so I can't see why doing a laptop one should be an issue? | |
| Posted by: nathall on 2025-04-28 22:05:29 My 1400 adapter gave up the magic smoke a few years back. I bought a replacement from power4laptops.co.uk about 3 years ago and it works great. They don’t look anything like an OEM adapter, but that doesn’t bother me personally. Looks like they make a 5300CE variant also: 
Apple PowerBook 5300CE Compatible Laptop Power AC Adapter Charger | Power4LaptopsReplacement AC Adapter Power Supply for your Laptop, manufactured and sold exclusively by Power4Laptops. Our chargers have overvoltage and overcurrent protection circuits built in, this means if you get a power surge a circuit in the charger will blow before it damages your Laptop. Power4Laptops...
www.power4laptops.co.uk
Granted, if you’re in the US I don’t know how the new tariffs might affect the price. | |
| Posted by: 3lectr1cPPC on 2025-04-30 07:12:40 A recap might get it working again. There's one hidden screw under the label, then you can put the brick into a vice and bust it open. Mine opened fairly cleanly. | |
Posted by: macman0512 on 2025-05-02 00:52:42My 1400 adapter gave up the magic smoke a few years back. I bought a replacement from power4laptops.co.uk about 3 years ago and it works great. They don’t look anything like an OEM adapter, but that doesn’t bother me personally.Thanks, but that's a bit outside of my budget. I'll keep it in mind though. | |
Posted by: macman0512 on 2025-05-02 00:53:31A recap might get it working again. There's one hidden screw under the label, then you can put the brick into a vice and bust it open. Mine opened fairly cleanly.Did you manage to put it back together again afterwards, or was the case too damaged? | |
Posted by: lobust on 2025-05-02 01:54:37A recap might get it working again. There's one hidden screw under the label, then you can put the brick into a vice and bust it open. Mine opened fairly cleanly.Is the glue in these able to be softened with a hot air gun? I have a 5300 psu that I'd like to do at some point also... | |
| Posted by: 3lectr1cPPC on 2025-05-02 04:17:41 It’s not glued shut, it’s ultrasonically welded. So that won’t work unfortunately. | |
Posted by: lobust on 2025-05-02 08:36:24It’s not glued shut, it’s ultrasonically welded. So that won’t work unfortunately. That's not so bad - engineered USW joints generally have a few sharp edges around which to fracture cleanly... I'm guessing on your one it left an easily glue-able fracture line? | |
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