11 Jul
2004
11 Jul
'04
2:51 p.m.
Drat... what is wrong with me? :)
The fellow is located on the PSU / Printer board - there are three
transformers on there; it looks like the two larger ones are
identical. It's one of the two larger ones - it seems as if the two
giant screw-on caps on that board were shorted... they're going to be
replaced. Can probably rewind the transformer if I can't find
something suitable, just am feeling a bit lazy. :)
Thanks for the kind reply, Tony!
Andy
On Mon, 12 Jul 2004 03:16:31 +0100 (BST), Tony Duell
<ard(a)p850ug1.demon.co.uk> wrote:
Hello all! :)
A while back, I purchased a smoking HP85.
I'm finally getting into the fixing it stage... The part in question
looks to be a transformer labelled 9100-0457 / 906933. It has a
similar, happier cousin labelled 9100-0455 / 906933. The caps are
Where is this part in the machine? On the PSU/printer board, the video
board, or what?
You can get the HP85 'Assembly Level Service Manual' on one of the HP
Museum CD-ROMs (look at http://www.hpmuseum.org/). Despite the name, it
does include schematics, but it won't contain transformer winding
details. You may have to work out what the transformer was from the circuit.
-tony