Is There An Appliance Dr In The House?

[Carbo]

The patient: LG Electric range, model LSE4613 ST, purchased April, 2021. Recently noticed a burning/melting plastic smell when either the stovetop or the oven was turned on. Pulled off the back and, sure enough, see the photo of what I found.
Is this just the electrical cord that went bad? Or something more sinister. . .and expensive?

 

[herm0016]

industrial electrician here.

you need to replace the terminal block, and it looks to me like a bad crimp on cord or was a loose/bad connection on L1 ( black) I would also replace the crimp connector on the black wire as it is now compromised from the heat. We run into this issue on all kinds of cheaper industrial equipment that does not use din rails and real terminal blocks. As a connection point that is a tiny bit sketchy goes through heat cycles it can make it worse and worse until the resistance in the connection creates enough heat to actually melt something.

The only good crimp tools are ratcheting like this:

Amazon.com

Haisstronica is actually a decent brand as well, I have a set of their hex ferule crimpers.

 

[bbhaag]

Fuck LG and the horse they road in on. You don't need a repair Dr OP. You need new non LG appliances.

Don't get me started on how "awesome" the linear compressor is in their refrigerators or how the four year old dishwasher already has water intrusion in the control board.

 

[deadlyapp]

industrial electrician here.

you need to replace the terminal block, and it looks to me like a bad crimp on cord or was a loose/bad connection on L1 ( black) I would also replace the crimp connector on the black wire as it is now compromised from the heat. We run into this issue on all kinds of cheaper industrial equipment that does not use din rails and real terminal blocks. As a connection point that is a tiny bit sketchy goes through heat cycles it can make it worse and worse until the resistance in the connection creates enough heat to actually melt something.

The only good crimp tools are ratcheting like this:

Amazon.com

Haisstronica is actually a decent brand as well, I have a set of their hex ferule crimpers.

Agree with this - my only other concern is that the range over-amped on one leg - this used to be a common issue with the old federal pacific stab lok breaker boxes, where a range or other thing would have a 120v and 240v circuit and would over amp the 120v and not trip the breaker.

I would replace the breaker just to make sure it is functioning correctly and as a precautionary measure (they only cost $30-40) and perhaps check any fuses/internal breakers on the range (I'm not sure if it has one but I feel like they normally do).

I did find the service manual (I think) which doesn't show any fuse.

https://research.encompass.com/ZEN/sm/LSE4613BD.pdf

 

[Steltek]

The terminal block you need is part# EAG32629301. Per the LG website here, you can use LG part# EAG32629306 as a subsitute. You can also use a general off brand substitute, but I personally prefer to stick with OEM parts where possible.

Make sure you save the following link from the LG service website:

https://lgparts.com/products/lse4613st?_pos=1&_sid=9da0dd1cc&_ss=r

The exploded view function they have there makes it easier to find LG part numbers for your range by blueprint location.

Also, were I you, if you plan to keep this range long term I'd download the service manual linked on the website as well and save it somewhere safe. It contains a lot of component testing procedures used by LG techs. Those types of manuals have a tendency to be taken down quite often without notice, so it is worth grabbing whenever you manage to find one for your appliance.

 

[Lost_in_the_HTTP]

Different brand, but maybe something similar .....

Samsung is recalling more than 1 million electric ranges after numerous fire and injury reports​

Samsung is recalling more than 1.12 million electric ranges used for stovetops after reports of 250 fires and dozens of injuries. According to the U.S.

 

[Steltek]

If you look up very close in the second picture the front clip on the crimp fitting for the cord on the black wire side that burned wasn't crimped over at all (it is still sticking straight down).

You were very lucky that the power fluctuations didn't blow up any of the electronic components on the range.

I so miss the days when appliances didn't have computers and other electronic components....