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PB 5xx original AC adapter re-cap & modern replacement
Posted by: croissantking on 2023-06-20 10:30:30 I used these for my recap of C1 and C2: https://eu.mouser.com/ProductDetail/Nichicon/UAS2D101MHD6?qs=kArNe9LFxXmGMlrK3Ua0IQ%3D%3D&countryCode=GB&currencyCode=GBP&_gl=11vctv44_gaNTQ2ODE3NjQzLjE2ODcyODIxMzM._ga_1KQLCYKRX3MTY4NzI4MjEzMy4xLjAuMTY4NzI4MjEzMy42MC4wLjA._ga_15W4STQT4T*MTY4NzI4MjEzMy4xLjAuMTY4NzI4MjEzMy4wLjAuMA.. They are just general purpose caps and work fine. Should I have used low ESR?
Posted by: 3lectr1cPPC on 2023-06-20 10:31:50 Well if it worked for you then it should be fine. Thanks for the links!
Posted by: 3lectr1cPPC on 2023-06-20 10:36:35 Do you have the mouser part list still for the rest by any chance? Having the same caps to install in mine as you did in yours which works would be great.
Posted by: croissantking on 2023-06-20 10:41:23 C803 - https://mou.sr/441tfXS C14A + C14B - https://mou.sr/3XgHlSJ C308A + C308B - https://mou.sr/43NrfCM
Posted by: 3lectr1cPPC on 2023-06-20 10:41:55 Thanks a lot! I'll get these ordered 🙂
Posted by: croissantking on 2023-06-20 10:43:00 Good luck and take care opening the PSU housing.
Posted by: 3lectr1cPPC on 2023-06-20 10:49:06 Thanks! I've already got the case open on mine. I took it, a 100 series adapter, and a 5300 series adapter to open up at a local workshop that had a vice. The 500 series charger put up the biggest fight of them all, had to pry at the darn think with a screwdriver in addition to the vice. Got it open though, even if the case is a bit chewed up.
Posted by: croissantking on 2023-06-20 10:51:00 It’s funny. One of my 500 series adapters cracked open with the slightest of teasing with a flat bladed screwdriver. The other one put up a fight like yours, but I went round the seam with a Stanley knife blade, pushing hard, and it eventually came apart with minimal damage.
Posted by: 3lectr1cPPC on 2023-06-20 10:52:12 Yeah these things are a big ol' pain. On the other hand I wanted to open up the adapter for a WinBook laptop I have and it was four screws on the bottom and then it came right open. If only!
Posted by: croissantking on 2023-06-20 10:59:25 I bought a massive bench vice to open my 100 series adapters. It was literally the only way. The amount of force I put into the sides of those things was massive and I was sure they were going to be destroyed, but it worked perfectly. How do you usually seal them up again? I use hot glue, it works ok.
Posted by: 3lectr1cPPC on 2023-06-20 11:00:40 That one got all deformed and then still wouldn't pop open - then I reefed up on it a bit with a screwdriver and it popped right open and reformed itself.
Posted by: MacUp72 on 2023-06-20 11:34:40 my adapter was very stubborn, too..it would just not break, and I didnt want to throw it on the floor in fear of breaking components. I just took a hobby saw and sawed into one edge near the power plug socket at the end.. once there was a small hole I inserted a big screwdriver and popped it open along the edges. and looking how close the actual board is to the plastic cover I'm glad I didnt use my dremel..
Posted by: croissantking on 2023-06-20 11:35:36 my adapter was very stubborn, too..it would just not break, and I didnt want to throw it on the floor in fear of breaking components. I just took a hobby saw and sawed into one edge near the plug at the end.. View attachment 58230 once there was a small hole I inserted a big screwdriver and popped it open along the edges. and looking how close the actual board is to the plastic cover I'm glad I didnt use my dremel.. Good work! I’m glad you didn’t actually throw it on the floor 😀
Posted by: MacUp72 on 2023-06-20 11:39:38 Good work! I’m glad you didn’t actually throw it on the floor 😀 😆 somebody actually `recommended` that.. Mr Bean style. I already recapped it..the only PITA thing was the desoldering of the pads.
Posted by: Fizzbinn on 2023-06-20 19:10:50 Hey @Fizzbinn! I'm going to purchase caps for my 5xx supply that's in need. Just a couple questions: 1. Are there any specific ESR or high-frequency requirements for these? I know some PSUs can be picky about that stuff, and this is my first time doing one. 2. For the two big ones, should I buy regular radial leaded, or the snap-in style? Thanks! So... funny thing is I never got to actually replacing the caps 😬 In buying parts machines to fix up my 5xx PBs I ended up with a power supply with a mostly destroyed case. I ended up grafting its cord onto an adapter box for a new/modern 16v power supply I got off amazon.
Posted by: 3lectr1cPPC on 2023-06-20 20:10:59 I suppose a modern supply does best ol’ unreliable 🙂 I’m just too lazy to put the time in to build one. So I’m recapping the original instead which probably takes more time 😅
Posted by: 3lectr1cPPC on 2023-06-23 12:40:43 Does anyone have a photo of the bottom of their AC adapter? I’m not sure whether this pin of this capacitor is supposed to be bodged to this resistor. Forgot to take a photo of mine before I started 🙁 Edit: the pads have continuity either way so I think I’m good.
Posted by: croissantking on 2023-06-23 12:51:50
Posted by: 3lectr1cPPC on 2023-06-23 14:15:01 Thanks. Went with that approach anyway already because of my multimeter tests and good news. We’re up and running! One cap had leaked a bit and some others showed the beginning signs but nothing too bad. I hate working on these though, it’s a cramped mess. Took me multiple hours for just those few caps. But the results are good! Both voltage rails are outputting about 16.5 volts which should be within spec. And the PowerBook seems happy. Definitely worth it!
Posted by: croissantking on 2023-06-23 14:22:47 Got any tunnelling issues?
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