nal Message-
> From: Maciej W. Rozycki [mailto:ma...@linux-mips.org]
> Sent: 30 October 2017 12:12
> To: r...@jarratt.me.uk
> Cc: 'General Discussion: On-Topic and Off-Topic Posts'
> <cctalk@classiccmp.org>; 'dwight' <dkel...@hotmail.com>
> Subject: RE: Cleaning a
Hi Rob,
> By the way I just noticed a 15uF/25V one next to the fan connector. It isn't
> one of the SXF ones as far as I can tell, do you recall replacing it?
My notes indicate it is a Chemi-Con SM, a general purpose 85°C part. I
did replace it at least once, in one of my H7826s that didn't
bject: RE: Cleaning and Restoring a Badly Corroded PSU
>
> On Sat, 28 Oct 2017, Maciej W. Rozycki wrote:
>
> > > Did you manage to remove this part without destroying it and without
> > > damaging the board?
> >
> > Yes, in all cases. I didn't recall a
Thanks Maciej,
> Yes, in all cases. I didn't recall any issues with unsoldering this part
really,
> using a simple 40W iron and desoldering wick only, and extra flux from a
pen.
Your technique has to be better than mine because I used an iron, a suction
desoldering station and a flux pen.
On Sat, 28 Oct 2017, Maciej W. Rozycki wrote:
> > Did you manage to remove this part without destroying it and without
> > damaging the board?
>
> Yes, in all cases. I didn't recall any issues with unsoldering this part
> really, using a simple 40W iron and desoldering wick only, and extra
Hello Rob,
> That 4700uF/10V capacitor is really hard to remove, it seem to be connected
> to large planes on both sides, which suck all the heat away. I have a
> suspicion that it may have leaked from the underside as the area around it
> is certainly quite dirty in a way that suggest the dirt
> This Nichicon PL 4700µF/10V part as well as all the Chemi-Con SXF parts
have
> certainly leaked in almost all the H7826 PSUs I have (which have been the
> worst in this respect), and consequently the PCB has become sticky in the
> output filter area. Beware that in addition to the output
On Tue, 24 Oct 2017, Rob Jarratt via cctalk wrote:
> Actually I didn't say they have leaked, but I do say that they could only
> have leaked from the bottom, but you can't tell. This does appear to be what
> happened to some of the capacitors I had on the other PSU I repaired
> recently, although
?
Regards
Rob
> -Original Message-
> From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of shad
> via cctalk
> Sent: 25 October 2017 21:06
> To: cctalk <cctalk@classiccmp.org>
> Subject: RE: Cleaning and Restoring a Badly Corroded PSU
>
> He
Hello,
the vertical heat sinks for the TO220 with this design are fairly common, I
saw them many times on various boards.
However, as they are simply aluminum parts, you can clean them for sure.
After removing the screw, you could try simply with an hard brush.
If badly corroded, remove the
: dwight [mailto:dkel...@hotmail.com]
Sent: 23 October 2017 23:10
To: r...@jarratt.me.uk; Rob Jarratt <robert.jarr...@ntlworld.com>; General
Discussion: On-Topic and Off-Topic Posts <cctalk@classiccmp.org>
Subject: Re: Cleaning and Restoring a Badly Corroded PSU
I don't see why you
ber 23, 2017 3:27:29 PM
To: r...@jarratt.me.uk; Rob Jarratt; General Discussion: On-Topic and Off-Topic
Posts
Subject: Re: Cleaning and Restoring a Badly Corroded PSU
On Mon, 2017-10-23 at 21:45 +0100, Rob Jarratt via cctalk wrote:
> I am now looking at the H7826 PSU that came with a TURBOcha
On Mon, 2017-10-23 at 21:45 +0100, Rob Jarratt via cctalk wrote:
> I am now looking at the H7826 PSU that came with a TURBOchannel
> Extender. It
> looks like there may have been capacitor leakage and some heatsinks
> will
> need to be replaced. I have posted pictures here:
>
>
>
>
On 10/23/2017 01:45 PM, Rob Jarratt via cctalk wrote:
> I am now looking at the H7826 PSU that came with a TURBOchannel Extender. It
> looks like there may have been capacitor leakage and some heatsinks will
> need to be replaced. I have posted pictures here:
>
>
>
>
of Rob Jarratt via
cctalk <cctalk@classiccmp.org>
Sent: Monday, October 23, 2017 1:45:42 PM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Cleaning and Restoring a Badly Corroded PSU
I am now looking at the H7826 PSU that came with a TURBOchannel Extender. It
looks like there m
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