Re: ONE repair in all my years...


"Trevor Wilson" <trevor@xxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
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"Arny Krueger" <arnyk@xxxxxxxxxx> wrote in message
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"MiNe 109" <smcelroy2@xxxxxxxxxxxxxxxx> wrote in message
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In article <5nfo8rFi34snU1@xxxxxxxxxxxxxxxxxx>,
"Trevor Wilson" <trevor@xxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote:

"MiNe 109" <smcelroy2@xxxxxxxxxxxxxxxx> wrote in message
news:smcelroy2-2A1D4A.18381214102007@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
In article
<jennconductsREMOVETHIS-2EC2B5.15405314102007@xxxxxxxxxxxxxxxxxxxxxxxxxx
et>,
Jenn <jennconductsREMOVETHIS@xxxxxxxxxxx> wrote:

...of listening to music through home audio equipment. In about 35
years, for all of the gear I've had, from Sears on up, I've had a
power
switch on a SAE amp go out after 3 years of use in 1983. That's it.
Am
I lucky, or do you have similar experiences?

I was surprised to learn that my Linn electronic crossover required
more
than one hundred fifty replacement capacitors. Then I found my Linn
amp
needed a similar action when I plugged in the newly repaired
crossover.

The capacitors on my LP12 power supply died a couple of years back. I
wonder if these Linn capacitor failures are a coincidence.


**Read the specs on capacitors sometime. It's quite scarey.
Electrolytic
caps are usually rated to XXXX hrs @ 85oC or 105oC. The better the cap,
the
more hours and the higher the temp. Naturally, the cap is derated, as
the
temperature rises. A typical cap found in a domestic product would be
rated
for around 5,000 hours @ 85oC. A mil-spec cap might be typically 20,000
hours @ 105oC. The difference in cost would be substantial. Keep your
caps
cool. Fan cooling is best.

My repairman used mil-spec replacements for about the same price Linn
would have charged to renew the original parts.

He was probably marking those mil-spec parts up fantastically. In small
volumes, the actual additional cost of a more competent part obtained
competently is usually only marginal.

**Possibly. I just checked my supplier. For a typical decoupling cap (such
as that used in a crossover) the cost of a regular 85oC rated part was
AUS$0.68c each. For a high grade, 105oC part, the cost was $7.19 each.
(Same values) Naturally, there is a range of prices between these values.

In my searching, the range of prices was US$0.68 for the 85 degree part
versus US $0.35 for the 105 degree part. Yes, the higher temperature
product was cheaper!


.

Relevant Pages

  • Re: ONE repair in all my years...
    ... switch on a SAE amp go out after 3 years of use in 1983. ... Then I found my Linn ... The capacitors on my LP12 power supply died a couple of years back. ... A typical cap found in a domestic product would be ...
    (rec.audio.opinion)
  • Re: ONE repair in all my years...
    ... switch on a SAE amp go out after 3 years of use in 1983. ... I was surprised to learn that my Linn electronic crossover required ... The capacitors on my LP12 power supply died a couple of years back. ...
    (rec.audio.opinion)
  • Re: ONE repair in all my years...
    ... I was surprised to learn that my Linn electronic crossover required ... needed a similar action when I plugged in the newly repaired crossover. ... The capacitors on my LP12 power supply died a couple of years back. ... A typical cap found in a domestic product would be ...
    (rec.audio.opinion)
  • Re: ONE repair in all my years...
    ... switch on a SAE amp go out after 3 years of use in 1983. ... I was surprised to learn that my Linn electronic crossover required more ... The capacitors on my LP12 power supply died a couple of years back. ...
    (rec.audio.opinion)
  • Re: ONE repair in all my years...
    ... switch on a SAE amp go out after 3 years of use in 1983. ... I was surprised to learn that my Linn electronic crossover required more ... The capacitors on my LP12 power supply died a couple of years back. ...
    (rec.audio.opinion)