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Old 13th Nov 2019, 2:36 am   #7
Zelandeth
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Join Date: Jun 2006
Location: Milton Keynes, Buckinghamshire, UK.
Posts: 931
Default Re: Sun Microcomputer II Motortester 1215

Sadly didn't get much time this evening, but did find time to tackle the dead light above the displays.

Simple enough job. The diffuser is released by removing the piece of brightwork below it, just held on by three machine screws.

The moment this was removed it became apparent quite why this thing is so heavy. The photo attached shows the cross section of the brightwork! Must weigh a couple of kilos...would normally expect a flimsy bit of pressed tin.

Given the connection with the US in this thing it wasn't a huge surprise to find an F30W T12 tube in there despite them being quite a rare sight over here. I did wonder if it it might be original, but a quick look at the date code shows it to be from 1995 so it looks to have been changed at some point.

Didn't have any T12s in white (got a couple of nice Atlas Double Life green ones though), but do have a half dozen of NOS Cryselco white T8s which should work just fine in this application.

Everything back together and it very much looks the business I think. Nice to see the colours are as vibrant as the day it was made.

Hopefully I'll actually be able to get properly stuck into it tomorrow. At least once I've the back cover off I should be able to pin down the production date properly as I'm still not entirely certain beyond guessing "early to mid 80s" at the moment.
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