Maciej W. Rozycki via cctalk wrote:
>
> Same here, five 1800uF 25V caps to replace in the H7821 according to my
> notes. Overall if you spot a cap that says SXF on it, then replace it
> right away whether already leaking or not. These were made by Chemi-con.
> Other Chemi-con lines
On Wed, 2 Nov 2022, Peter Coghlan via cctalk wrote:
> > 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
On 15/11/2022 23:22, Peter Coghlan via cctalk wrote:
My experience with a H7822 is that when all the diagnostic LEDs stay lit,
DC OK is probably not getting asserted so the power supply might still
not be working 100% correctly. In the H7822, DC OK seems to be the
purple lead and high
On 15/11/2022 10:06, Antonio Carlini via cctalk wrote:
On 24/10/2022 21:07, Antonio Carlini via cctalk wrote:
the bitsbox one may be a teensy bit to large but the ebay one should
fit nicely. Neither is too expensive even with postage so I'll buy a
few, given that I do have a fair few PSUs
On 24/10/2022 21:07, Antonio Carlini via cctalk wrote:
the bitsbox one may be a teensy bit to large but the ebay one should
fit nicely. Neither is too expensive even with postage so I'll buy a
few, given that I do have a fair few PSUs knocking around.
Just a quick follow-up in case it helps
Antonio Carlini via cctalk wrote:
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
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
On 24/10/2022 21:07, Antonio Carlini via cctalk wrote:
the bitsbox one may be a teensy bit to large but the ebay one should
fit nicely. Neither is too expensive even with postage so I'll buy a
few, given that I do have a fair few PSUs knocking around.
Turns out both sets of X2 caps I bought
On 24/10/2022 21:07, Antonio Carlini via cctalk wrote:
the bitsbox one may be a teensy bit to large but the ebay one should
fit nicely. Neither is too expensive even with postage so I'll buy a
few, given that I do have a fair few PSUs knocking around.
Turns out both sets of X2 caps I bought
On 23/10/2022 20:19, John H. Reinhardt via cctalk wrote:
It looks like the RIFA caps I've removed from my DEC H7864 P/S. Though
mine were colored more toward the amber you find dead flies fossilized
in and had visible cracks in the case. The RIFA logo/name was on one
side with other
I'm working on cleaning up a bit of battery leakage in a MicroVAX 3100
Model 10 and while it's apart I decided to look inside the PSU (an
H7822-00).
It's nice and clean inside with no bulging caps. What it does have is an
X2 capacitor, as shown here:
On 10/23/2022 1:27 PM, Antonio Carlini via cctalk wrote:
I'm working on cleaning up a bit of battery leakage in a MicroVAX 3100 Model 10
and while it's apart I decided to look inside the PSU (an H7822-00).
It's nice and clean inside with no bulging caps. What it does have is an X2
capacitor,
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