Re: Apple Lisa UK power supply

From: James MacPhail <gg__at_email.domain.hidden>
Date: Wed, 10 Oct 2007 14:03:55 -0700

>burst capacitor on the power supply but as this is a UK version is rated
>at 220v and 0.7 amps.
>Does anyone here know where I can get a replacement unit or how I go
>about getting it repaired in the UK.

Someone familiar with repairing switching power supplies should be able to fix it. For example, a local TV repair shop.

If you are handy with a soldering iron, you may be able to repair it yourself, especially if replacing capacitors is all that is required. There are lethal voltages involved, so care and caution are required.

Note there are two designs of the Lisa PSU, the earlier Apple design and the later DataPower design. When looking for a replacement, the latter is considered more rugged and is very easy to switch to 220V.

Your PSU, rated at 220v and 0.7Amps, is the Apple design (often referred to as the 1.2A PSU, because of its rating at 120V).

The 220 and 120 volt variants of the PSUs are only slightly different, the schematics on the internet apply to both. (Which may be useful for repair, or altering a replacement, eg. from eBay.)

There is further information in the LisaFAQ:


I see the LisaFAQ is missing the Apple part number for your variant of the PSU, can you see it on a label on the PSU enclosure somewhere? (Probably 620-xxxx)

HTH, James

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