I just repaired (recapped and cleaned the PCB) a PowerBook 170 Power Adapter M5140Z (APS-20E).
Needed all of the brown ELNA capacitor replaced. 47uF 50V, 82uF 16V, 180uF 16V and 1200uF 16V were all leaking in the bottom. I was lucky as the corrosion around the caps was still minimal, so I didn't need to repair any traces.
I replaced them with 100uF 16V and 220uF 16V Polymer capacitors and the 1200uF 16V with a Rubycon ZL series (Low ESR) one. For the 47uF 50V I just used off the shelf normal cap.
Few other caps were fine, so I left them in.
PCB was cleaned with multipurpose degreaser/cleaner and plain water. I left it 3 days to dry up in the sun.
Main problem was to get it open properly. I was compressing it with two F-clamps while spraying the seam with a brake cleaner to make the plastic a bit softer.
Slowly, I got it to open without any damage.
Last thing was to adjust the voltage, as it was outputting 7.9V, I corrected it to 7.65V and to glue it back.
First two images are before recap and last two after.
Needed all of the brown ELNA capacitor replaced. 47uF 50V, 82uF 16V, 180uF 16V and 1200uF 16V were all leaking in the bottom. I was lucky as the corrosion around the caps was still minimal, so I didn't need to repair any traces.
I replaced them with 100uF 16V and 220uF 16V Polymer capacitors and the 1200uF 16V with a Rubycon ZL series (Low ESR) one. For the 47uF 50V I just used off the shelf normal cap.
Few other caps were fine, so I left them in.
PCB was cleaned with multipurpose degreaser/cleaner and plain water. I left it 3 days to dry up in the sun.
Main problem was to get it open properly. I was compressing it with two F-clamps while spraying the seam with a brake cleaner to make the plastic a bit softer.
Slowly, I got it to open without any damage.
Last thing was to adjust the voltage, as it was outputting 7.9V, I corrected it to 7.65V and to glue it back.
First two images are before recap and last two after.
