Digest for sci.electronics.repair@googlegroups.com - 10 updates in 2 topics

Jeff Liebermann <jeffl@cruzio.com>: Nov 23 08:45AM -0800

On Sat, 23 Nov 2019 01:37:35 -0000 (UTC), Cursitor Doom
>That cap has now been replaced and the device appears to be working fine
>again, although after 10 years of storage there's no doubt some re-
>aligning and whatnot to be done.
 
62 articles and growing. I got lazy and just skimmed the articles
posted by those who had a history of successful troubleshooting. I
didn't see anything that looked like success, so I posted my
suggestions on the assumption that the obvious culprits and usual
suspects had been eliminated. Anyway, congrats on fixing the problem.
 
 
 
--
Jeff Liebermann jeffl@cruzio.com
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558
Cursitor Doom <curd@notformail.com>: Nov 24 12:02AM

On Sat, 23 Nov 2019 08:27:56 -0600, Fox's Mercantile wrote:
 
> different things."
> "The question is," said Humpty Dumpty, "which is to be master—that's
> all."
 
I think I can see your problem now: you're a MORON.
 
 
 
 
 
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Fox's Mercantile <jdangus@att.net>: Nov 23 06:54PM -0600

On 11/23/19 6:02 PM, Cursitor Doom wrote:
> I think I can see your problem now: you're a MORON.
 
Do you honestly believe I give a flying fuck what you think?
 
--
"I am a river to my people."
Jeff-1.0
WA6FWi
http:foxsmercantile.com
Cursitor Doom <curd@notformail.com>: Nov 24 10:08AM

On Sat, 23 Nov 2019 18:54:28 -0600, Fox's Mercantile wrote:
 
> On 11/23/19 6:02 PM, Cursitor Doom wrote:
>> I think I can see your problem now: you're a MORON.
 
> Do you honestly believe I give a flying fuck what you think?
 
Just pointing it out for the benefit of others here who may not yet be
fully familiar with your profane outpourings of ill-informed garbage and
propensity to discharge same.
 
 
 
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Fox's Mercantile <jdangus@att.net>: Nov 24 07:11AM -0600

On 11/24/19 4:08 AM, Cursitor Doom wrote:
 
> Just pointing it out for the benefit of others here who may not yet be
> fully familiar with your profane outpourings of ill-informed garbage and
> propensity to discharge same.
 
That's precious.
I pointed out that you're a hack.
I pointed out the Tabby is hack.
You two have been having a love fest trying to justify yourselves.
 
Get a room.
 
 
 
--
"I am a river to my people."
Jeff-1.0
WA6FWi
http:foxsmercantile.com
Cursitor Doom <curd@notformail.com>: Nov 24 02:20PM

On Sun, 24 Nov 2019 07:11:14 -0600, Fox's Mercantile wrote:
 
> That's precious.
> I pointed out that you're a hack.
 
You're a *MORON* and a DUMBASS. Did you not see the picture I posted of
the network analyser I freely admitted to butchering earlier in the
thread?
 
No Sherlock you, but blind as well as rude and ignorant, clearly.
 
 
 
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Fox's Mercantile <jdangus@att.net>: Nov 24 10:23AM -0600

On 11/24/19 8:20 AM, Cursitor Doom wrote:
> the network analyser I freely admitted to butchering earlier in the
> thread?
 
> No Sherlock you, but blind as well as rude and ignorant, clearly.
 
Yes I did, that's why I said you're hack.
 
 
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"I am a river to my people."
Jeff-1.0
WA6FWi
http:foxsmercantile.com
Cursitor Doom <curd@notformail.com>: Nov 23 04:45PM

On Sat, 23 Nov 2019 18:08:11 +1100, marty wrote:
 
> It's cactus, throw the thing out.
 
I don't believe in doing that unless there's no other option. Having
grown up in the overhang of postwar rationing and austerity I feel
compelled to do all I can to rescue stuff if it's safe and practical to
do so. Plus our 'throw away society' is not doing the planet any favours
at all.
 
 
 
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Cursitor Doom <curd@notformail.com>: Nov 23 06:04PM

On Fri, 22 Nov 2019 22:34:01 -0800, whit3rd wrote:
 
> It's either an energency overtemperature cutoff (like a fuse), or a
> thermal switch that repeatedly time-cycles according to the
> heating/cooling time constant of its companion resistors.
 
I assumed it was tucked between those resistors to sense any higher than
usual warming in them. It's marked 76 degrees C in the case of this one.
I'm guessing it (since it's in series with the live line) that if the
temp rises above that level it will wind back the current, but this one
has blown completely open-circuit and maybe that's what it was designed
to do. Nothing visible, just on testing for resistance.
 
> The diodes presumably send current to heating element A on positive
> half-cycles, and heating element B on negative half-cycles (so as to
> retain some function if one element fails open-circuit).
 
Sounds feasible. I'll check the resistance of the heating elements and
see what they show. One may have gone partially short-circuit, causing
the fault in the first place. It's a 70W blanket so at 240V they should
come out at about 800 ohms in total if my quick 'n' dirty sums are
correct.
 
 
 
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Phil Allison <pallison49@gmail.com>: Nov 23 01:23PM -0800

Cursitor Doom wrote:
 
----------------------
> temp rises above that level it will wind back the current, but this one
> has blown completely open-circuit and maybe that's what it was designed
> to do. Nothing visible, just on testing for resistance.
 
** FFS - it's a common thermal fuse.
 
https://www.amazon.com/10Pcs-Microtemp-Thermal-Cutoff-SM110A1/dp/B072SV9QFB
 
A spring loaded contact inside is held together with a wax like substance that melts at some desired temp.
 
Likely the unit was made to overhead by being on top of the blanket and insulated by bed clothes.
 
 
 
... Phil
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