More actions
| PM281X | |
|---|---|
| Manufacturer | Philips/Fluke |
| Code name | |
| Release date | |
| Device type | Other |
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This article is about the Philips/Fluke PM2811, PM2812, PM2813 programmable power supplies. They are very modular, and similar to each other differing only in the configuration modules the device comes with.
Guides
Explanatory Guides
Repair Guides
| Affects part | Type | Difficulty | |
|---|---|---|---|
| PM281X: Switching between 110V and 220V | General | 1. Easy |
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Device pictures
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PCB pictures
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Reference measurements (also schematics if available)
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More Information/External Sources
Filtering Capacitors/Modules to replace
- A common issue with these power supplies is that the compact filtered power entry module often degrades over time[1]. The capacitors inside of it often explode, and leave a nasty smell, and goo around it. The codename of the module is "FN282-6-06" and is still available for purchase. [2]
- The input module PCB has an X2 class 0.68 µF RIFA capacitor, the kind with the semi-transparent case that tends to crack, and allow moisture in. These kinds of capacitors, are recommended to be replaced in old gear. Note that this capacitor is 15mm wide, 31.5mm long, and the pin pitch is about 27.5mm. There's space enough for a couple mm wider or couple mm longer capacitor.
Terminal Block Screws
If you are missing terminal block screws, these are threaded UNC 6#-32, with a length of 1/4 inch[3]. This same thread is also used by "harddrive screws".
- ↑ The author of this article has seen this module fail on at least 3 devices, and also noticed other people online seeing the same failure: https://youtu.be/owhx7wW-mN8?si=VscQqoiZPaNYLUzT&t=416, https://www.eevblog.com/forum/reviews/phillipsfluke-pm2811-power-source/msg1582627/#msg1582627 At this point it is recommended to replace these on sight, and write the replacement date onto the modules.
- ↑ https://www.tme.eu/ro/en/details/fn282-6-06/iec-60320-connectors/schaffner-te-connectivity/800367-sf/
- ↑ Example of where to order: https://www.aliexpress.com/item/1005004139480135.html