[RFI] Samsung oven RFI update number II

Fri May 22 13:48:34 EDT 2020

My friend had same issue with his oven (not sure of brand) with RFI on 10
meters. The manufacturer sent out a tech with a cable that had a ferrite
around the wires, not looped through and it did nothing to reduce the noise
on 10 meters. They did not say what type of ferrite it was. Most likely fix
for your problem would be a custom cable with proper mix ferrite and loop
the wires though the core several times. Obviously that would be a point to
void the warranty.

Dave wo2x

-----Original Message-----
From: RFI <rfi-bounces+rocketnj=gmail.com at contesting.com> On Behalf Of Randy
Diddel
Sent: Friday, May 22, 2020 1:42 PM
To: rfi at contesting.com
Subject: Re: [RFI] Samsung oven RFI update number II

Hello all,

Bad news. The tech come out and replaced the system board right behind the
control panel. There was no change. The tech called the Samsung Repair Tech
hotline while he was still here. The representative he talked to DID know of
the issue and stated that there is no fix. I asked my tech to escalate the
issue further. This was yesterday so there is no word yet. 

I did look at the board and it is wide open and there is no sign or any
shielding at all on the board or in the space inside where it sits.  I guess
I wait for any word of what is next.

At this point, I am not sure what else to do. I will try ferrets but I feel
like this is a bandaid and the issue deserves more attention.

I will report back once I hear from Samsung again.

73

K5RHD

/randy

This actually good news! Keep up the reports!

Kim N5OP 

"People that make music together cannot be enemies, at least as long as the
music lasts." -- Paul Hindemith

> On May 14, 2020, at 2:32 PM, Dave Cole <dave at nk7z.net
<mailto:dave at nk7z.net>> wrote:
> 
> ?Thanks for sharing this info...
> 
> 73, and thanks,
> Dave (NK7Z)
> https://www.nk7z.net <https://www.nk7z.net/> ARRL Volunteer Examiner 
> ARRL Technical Specialist ARRL Asst. Director, NW Division, Technical 
> Resources
> 
>> On 5/14/20 10:51 AM, Randy Diddel wrote:
>> Just an update. I reached out to file a support ticket with Samsung and
they dispatched a repair tech to our home to see the issue first hand. I was
able to easily reproduce the issue for him. He has been in the business for
over 10 years and never has seen anything like this.
>> We pulled the stove out and we dragged an extension cord to another
circuit to see if it made any difference. SPOILER: it didn?t-if anything it
got worse with a longer power cord since we lengthened the antenna of the
stove?.but I humored him. He also checked to make sure the outlet was
properly grounded (it was).
>> The tech has ordered a new main board under warranty and will be back
next week to install it. I have little faith that this is the issue but I am
willing to work through their troubleshooting process. I work in IT and
understand the progression so I am patient.
>> I will share more as we work through this issue.
>> 73
>> K5RHD
>> /randy
>>> 
>>> Message: 1
>>> Date: Wed, 6 May 2020 15:32:36 -0500
>>> From: "Lloyd - N9LB" <lloydberg at tds.net <mailto:lloydberg at tds.net>>
>>> To: "'Hare, Ed  W1RFI'" <w1rfi at arrl.org <mailto:w1rfi at arrl.org>>,
<rfi at contesting.com <mailto:rfi at contesting.com>>
>>> Subject: Re: [RFI] Samsung oven RFI update
>>> Message-ID: <000d01d623e5$7b020060$71060120$@tds.net
<mailto:000d01d623e5$7b020060$71060120$@tds.net>>
>>> Content-Type: text/plain;    charset="us-ascii"
>>> 
>>> Would alerting Underwriters Laboratories "UL" have any value?
>>> 
>>> -----Original Message-----
>>> From: RFI [mailto:rfi-bounces+lloydberg=tds.net at contesting.com 
>>> <mailto:rfi-bounces+lloydberg=tds.net at contesting.com>] On Behalf Of 
>>> Hare, Ed W1RFI
>>> Sent: Wednesday, May 06, 2020 12:08 PM
>>> To: Dave Cole <dave at nk7z.net <mailto:dave at nk7z.net>>; 
>>> rfi at contesting.com <mailto:rfi at contesting.com>
>>> Subject: Re: [RFI] Samsung oven RFI update
>>> 
>>> I do know that Paul Cianciolo has worked with a few hams on this 
>>> issue. I am not sure if he made any headway on it with Samsung, but 
>>> I will see him later this week and I can ask. He reads most of the 
>>> posts here, but doesn't have time to respond to all of them.
>>> 
>>> I am not a lawyer either, but from an FCC perspective, hams are 
>>> responsible only for interferece caused by spurious emissions and 
>>> out-of-band emissions from their transmitters.  That's not to say that a
neighbor would not
>>> initiate a lawsuit.   On the ARRL web page can be found information on
>>> federal pre-emption of state and local RFI issues, which could 
>>> incude civil suit, but the nuances of law are such that a ham 
>>> involved in that kind of dispute is going to need an attorney.
>>> 
>>> Under US law, there are no federal requirements for immunity, so the 
>>> manufacturer is off the fedreal hook from an FCC perspective.  There 
>>> may be other federal requirements for appliance safety, though.  
>>> Either way, they, too, would be on the hook for possible civil 
>>> action should a fire result from the use of their product under any 
>>> circumstances although federal pre-emption could apply there too. Again,
more work for the attornies.
>>> 
>>> I do know that when Eaton was made aware that some of their AFCI 
>>> breakers were tripping due to RF, they were very interested and put 
>>> two engineeers on a plane from the west coast to witness ARRL's 
>>> testing.  We accomodated them, of course. So manufacturers can be 
>>> very interested in anything related to the safe use of their products.
>>> 
>>> Ed Hare, not an attorney, nor do I play one on TV.
>>> 
>>> ________________________________
>>> From: RFI <rfi-bounces+w1rfi=arrl.org at contesting.com 
>>> <mailto:rfi-bounces+w1rfi=arrl.org at contesting.com>> on behalf of 
>>> Dave Cole <dave at nk7z.net <mailto:dave at nk7z.net>>
>>> Sent: Wednesday, May 6, 2020 12:03 PM
>>> To: rfi at contesting.com <mailto:rfi at contesting.com> 
>>> <rfi at contesting.com <mailto:rfi at contesting.com>>
>>> Subject: Re: [RFI] Samsung oven RFI update
>>> 
>>> You might compose a short note to them, letting them know of the 
>>> safety issue, and your fear of a fire as a result of their failure 
>>> to sufficiently deal with the RFI issues they clearly have.
>>> 
>>> At a minimum, take copious notes, with everyone's name and 
>>> times/dates, and what was discussed.
>>> 
>>> The problem is, if I understand the rules correctly, YOU as the 
>>> owner are responsible, and must accept all interference caused to your
device.
>>> 
>>> Maybe Ed H could chime in here, and help clarify that a bit. I am 
>>> not a lawyer, and not exposed to this as much as Ed is...
>>> 
>>> --
>>> 73, and thanks,
>>> Dave (NK7Z)
>>> https://www.nk7z.net <https://www.nk7z.net/> ARRL Volunteer Examiner 
>>> ARRL Technical Specialist ARRL Asst. Director, NW Division, 
>>> Technical Resources
>>> 
>>> On 5/6/20 8:37 AM, EDWARDS, EDDIE J via RFI wrote:
>>>> I suggest you don't tell them about how you lock it as a work 
>>>> around
>>> solution.  Because there may be some other RF out there that could 
>>> trigger it too!  Ask them to fix the "susceptibility to RF signals" 
>>> so that this never happens unexpectedly like when you're not home.
>>>> 
>>>> This is a fire safety issue the manufacturer must fix or else 
>>>> replace with
>>> a new unit that is not "susceptible" to wireless signals as RF 
>>> signals are everywhere and that's getting worse every day.
>>>> 
>>>> 73, de ed -K0iL
>>>> 
>>>> -----Original Message-----
>>>> From: RFI <rfi-bounces+eedwards=oppd.com at contesting.com 
>>>> <mailto:rfi-bounces+eedwards=oppd.com at contesting.com>> On Behalf Of 
>>>> Randy Diddel
>>>> Sent: Wednesday, May 6, 2020 9:32 AM
>>>> To: rfi at contesting.com <mailto:rfi at contesting.com>
>>>> Subject: Re: [RFI] Samsung oven RFI update
>>>> 
>>>> I reached out to Samsung and logged a trouble ticket with them. The
>>> Chatbot/person on the other end had no idea what Amateur/Ham Radio 
>>> was nor what RFI was either.  After explaining it to him he repeated 
>>> his summary of what he thought my issue was, "So your oven is getting
too hot?"
>>>> 
>>>> A local repair company is going to come out and take a look. I at 
>>>> least
>>> have a ticket number for the incident logged with Samsung but zero 
>>> confidence that they understand what the issue is or that they will 
>>> be willing to do anything about it.
>>>> 
>>>> The oven is new and under warranty but, well beyond the return date 
>>>> from
>>> Lowe's.
>>>> 
>>>> I continue to lock the oven from the panel and it does unlock
>>> occasionally. New behavior is that once locked, after I am done with 
>>> operating on 40M, the panel is completely non-responsive and I have 
>>> to pull the oven out and unplug the power to it and then plug it back
in.
>>>> 
>>>> I am going to order up some ferrite and try what others have done 
>>>> as well
>>> and just live with it. The XYL is not interested in trying another 
>>> brand-she likes the continuity of the kitchen appliances all being 
>>> the same brand and finish.
>>>> 
>>>> 73
>>>> 
>>>> K5RHD
>>>> 
>>>> /randy
>>>> 
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