2 Nov
2022
2 Nov
'22
4:26 p.m.
On 01/11/2022 23:10, Peter Coghlan via cctalk wrote:
I've taken the boards out of a whole bunch of
H7821 and H7822 PSUs to
replace the electrolytics without removing the fans. It was difficult at
first but the more I did, the easier it got. I did come across one
seized
fan along the way but I haven't a replacement yet so I haven't got around
to removing the bad one. I should look into it.
I think I have a second H7822 and a pair of H7821 supplies to look at,
so I may well end up getting some practice in!
Did you have to replace the power LED at all? I've just bench-tested the
PSU I've swapped the X2 cap in (luckily it powers up without a load, so
all I did was hook up a DVM and check out the voltages), and I noticed
that the LED didn't light. I'm pretty sure I connected it back (and it
is keyed!) so I think I may be looking for a replacement. Something in
the back of my mind says that there is something that makes the
replacement slightly non-trivial (funny LED, odd housing it fits in,
some trick to getting it out ... I can't remember unfortunately).
BTW was it just the 1800uF 25V 105degC caps (mine are brown) that you
had to replace? Mine look fine but there are some other large
electrolytics in there (two large brown 470uF voltage unclear, and one
large black cap by the mains input on which I cannot see any of the
markings).
Thanks
Antonio
--
Antonio Carlini
antonio(a)acarlini.com