musician insanity

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bitrex

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A guy on social media (natch) who had a faulty Korg Oasys ($8000
synthesizer) trying to DIY repair the switching power supply, and posted
photos of himself having extracted the fucking primary-side PFC boost
filter cap, 470uF 450 volts, having convinced himself this was the
faulty part because it didn't read exactly 470uF on a DMM.
 
In article <cKWHE.23924$S33.19384@fx14.iad>, user@example.net says...
A guy on social media (natch) who had a faulty Korg Oasys ($8000
synthesizer) trying to DIY repair the switching power supply, and posted
photos of himself having extracted the fucking primary-side PFC boost
filter cap, 470uF 450 volts, having convinced himself this was the
faulty part because it didn't read exactly 470uF on a DMM.
Click to expand...

Wait for him to find a new one that measures exectally 470 uF.

Almost no component will measure exectally what it is labled. You just
have to know with in reason how far you can go in the circuit and it
still functions like it should.

Chances are he could use 2 different meters and they would show up
different.
 
On 5/30/19 5:54 PM, Ralph Mowery wrote:
In article <cKWHE.23924$S33.19384@fx14.iad>, user@example.net says...

A guy on social media (natch) who had a faulty Korg Oasys ($8000
synthesizer) trying to DIY repair the switching power supply, and posted
photos of himself having extracted the fucking primary-side PFC boost
filter cap, 470uF 450 volts, having convinced himself this was the
faulty part because it didn't read exactly 470uF on a DMM.



Wait for him to find a new one that measures exectally 470 uF.

Almost no component will measure exectally what it is labled. You just
have to know with in reason how far you can go in the circuit and it
still functions like it should.

Chances are he could use 2 different meters and they would show up
different.
Click to expand...

He said it read 440uF. on a cheap DMM capacitance function not tested
anywhere near the voltage it's normally operated at I expect it's fine.

He thought it was the 12 volt bus filter capacitor, too, and not the
kind of cap that can store enough energy to kill someone that it is. I
figure it's usually worth at least an attempt to save that guy from
himself but they tend to double down "well see. already ordered the part
bro. don't tell me this Mom-stuff"

Anyway many Americans like this one also believe the government is out
to get them..yeah well maybe it is maybe it isn't but sanity starts at home
 
On Thursday, May 30, 2019 at 4:07:40 PM UTC-4, bitrex wrote:
A guy on social media (natch) who had a faulty Korg Oasys ($8000
synthesizer) trying to DIY repair the switching power supply, and posted
photos of himself having extracted the fucking primary-side PFC boost
filter cap, 470uF 450 volts, having convinced himself this was the
faulty part because it didn't read exactly 470uF on a DMM.
Click to expand...

Look, everyone on the internet says it's "capacitors", so it's gotta be true. Why are you doubting him.

As an aside, if there's one value of cap that always seem to read low value either after being in service for a while or new replacements, it's the 470uf - regardless of voltage.
 
On 2019/05/30 1:07 p.m., bitrex wrote:
A guy on social media (natch) who had a faulty Korg Oasys ($8000
synthesizer) trying to DIY repair the switching power supply, and posted
photos of himself having extracted the fucking primary-side PFC boost
filter cap, 470uF 450 volts, having convinced himself this was the
faulty part because it didn't read exactly 470uF on a DMM.
Click to expand...

And the technician who finally is called in to fix this will have to
deal with all sorts of the cheap owner's crappy work including broken
traces, ripped out feed through holes...

John :-#(#
 
On 31/05/2019 4:07 am, bitrex wrote:
A guy on social media (natch) who had a faulty Korg Oasys ($8000
synthesizer) trying to DIY repair the switching power supply, and posted
photos of himself having extracted the fucking primary-side PFC boost
filter cap, 470uF 450 volts, having convinced himself this was the
faulty part because it didn't read exactly 470uF on a DMM.
Click to expand...

Just let the Darwin effect take it's course.
 
On 5/31/19 5:02 AM, Rheilly Phoull wrote:
On 31/05/2019 4:07 am, bitrex wrote:
A guy on social media (natch) who had a faulty Korg Oasys ($8000
synthesizer) trying to DIY repair the switching power supply, and
posted photos of himself having extracted the fucking primary-side PFC
boost filter cap, 470uF 450 volts, having convinced himself this was
the faulty part because it didn't read exactly 470uF on a DMM.

Just let the Darwin effect take it's course.
Click to expand...

Meh, easy to say but even idiots probably have friends and family who
care about them for whatever reason. Even this idiot probably got a
mother. I figure it's worth at least one attempt to dissuade idiots from
bad ideas, for Mom's sake at least. If they double-down, well...it's in
the hands of Fate, protector of fools.
 
On 1/06/2019 12:57 am, bitrex wrote:
On 5/31/19 5:02 AM, Rheilly Phoull wrote:
On 31/05/2019 4:07 am, bitrex wrote:
A guy on social media (natch) who had a faulty Korg Oasys ($8000
synthesizer) trying to DIY repair the switching power supply, and
posted photos of himself having extracted the fucking primary-side
PFC boost filter cap, 470uF 450 volts, having convinced himself this
was the faulty part because it didn't read exactly 470uF on a DMM.

Just let the Darwin effect take it's course.

Meh, easy to say but even idiots probably have friends and family who
care about them for whatever reason. Even this idiot probably got a
mother. I figure it's worth at least one attempt to dissuade idiots from
bad ideas, for Mom's sake at least. If they double-down, well...it's in
the hands of Fate, protector of fools.
Click to expand...

Ahh you are just too kind :)
 
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