I've seen and witnessed it many.....many times with SMPSs from China over
the last 15 years or so. It happens more than you might imagine. One year
of testing as a consultant, I had to send 100% of the SMPS's back for lack
of decoupling in either the AC or DC lines. The real estate was there for
the components, but they were jumpered once the supply had passed
regulatory qualifications. Very common practice!!!
Dave - WØLEV
On Thu, Nov 8, 2018 at 10:00 PM Gary K9GS <garyk9gs@wi.rr.com> wrote:
> I work in the contract electronics manufacturing business. No reputable
> contract manufacturer would eliminate parts from a PCBA without approve of
> their customer (LG).
>
>
>
> 73,
>
> Gary K9GS
>
> -------- Original message --------
> From: David Eckhardt <davearea51a@gmail.com>
> Date: 11/8/18 3:39 PM (GMT-06:00)
> To: dsgarnier@att.net
> Cc: Rfi List <rfi@contesting.com>
> Subject: Re: [RFI] LG washer WT1501CW - EMI
>
> If I had to make a somewhat cynical comment, I'll bet the contract
> manufacturer eliminated the "simple line filter" to cut costs. After all,
> the line filter adds cost and does not contribute to the performance of the
> machine. Remember, home appliances are exempted from radiated and
> conducted emissions by the FCC.
>
> Dave - WØLEV
>
> On Thu, Nov 8, 2018 at 9:36 PM David Garnier <dsgarnier@att.net> wrote:
>
> > Hello,
> > Has anyone gotten factory EMI support for LG's WT1501CW washer??I am
> > curious if any others have gotten factory support for this problem.
> > I have started a conversation with LG support line, we will seeif this
> > goes anywhere. Their customer information line didn't havea clue, has
> > anyone else complained?
> >
> > This machine impressively wipes out 80 and 40 meters with it's
> > variable motor control electronics. I don't want to look at 160 meters.
> > The factory service manual shows an simple internal line filter but at
> > my QTH it's not doing much good.
> > https://drive.google.com/file/d/0B-i5KqMA2RZwcHktSWk1SW5tNEU/view
> > I have inserted a short AC jumper line-cord (with line filter andcommon
> > mode FB) between the washer and the 120 outlet and
> > this greatly greatly reduces 80 and 40 meters interference...
> > I'm using a Schaffner FN-660-20/10 line filter an Fair-rite 264380302
> > FB on the cord end, about 7 turns around the core.I can send a picture if
> > this would help anyone else.
> >
> > 73's
> > Dave - wb9own
> > _______________________________________________
> > RFI mailing list
> > RFI@contesting.com
> > http://lists.contesting.com/mailman/listinfo/rfi
> >
>
>
> --
>
> *Dave - WØLEV*
> *Just Let Darwin Work*
> *Just Think*
> _______________________________________________
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> http://lists.contesting.com/mailman/listinfo/rfi
>
--
*Dave - WØLEV*
*Just Let Darwin Work*
*Just Think*
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