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Samsung Chef Collection stovetop stopped detecting cookware, left two burners only. The two burners on the right are working fine. A repair guy did not mince words: take it to the dump. He said he sees these stoves failing all the time and there is very little that can be done in the way of diagnostics, short of checking for blown fuses and visually checking if something looks obviously wrong. Swapping out parts one by one can be a very expensive proposition: the cost of the part, the wait time, the time to disassemble and re-assemble the stove (there is no way to find out if it works without fully assembling it).

The fact that two burners failed at the same time provides important troubleshooting information. It is clearly not something with the individual burners - it has to be some common component shared by the left two burners.

I decided to try my luck and ordered the left inverter board. It was not cheap, around 300$ with shipping and tax. I swapped the board and... nothing.

Any ideas or suggestions what to try next? I do have a high quality tester. enter image description here

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    You need the circuit diagram to work out what happens where. Quite honestly the rapair man gave you good advice - you have already added $300 to the cost of your next one. Or continue with just two burners but that side may soon fail... – Solar Mike Apr 23 at 5:54
  • That's the problem with these fancy appliances. They are complicated! I'm guessing there is some sort of detector that determines if you have placed a pan over the burner. Look for it and see if it can be tested. – jwh20 Apr 23 at 10:33
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    I regard induction as a fad, or poorly developed technology in its infancy. As such, I think the sensible approach if you want to play with it is a countertop hotplate that does not encourage you to waste money when it breaks. You got good advice (well, actually I would have modified the advice to "use the right side only until that breaks, then take it to the dump" and chose to ignore it. Welcome to the learning experience and paying your dues. Modern electronics are mostly designed to be non-economical to repair. – Ecnerwal Apr 23 at 11:19
  • @Ecnerwal - "designed to be non-economical to repair" is not strictly true. Modern electronics are designed to be cheap to produce - repairability rarely (if ever) factors into the equation one way or the other, but when it does it invariably makes the result more expensive to produce. – brhans Apr 23 at 14:01
  • Are you sure you understand how these work? I ask because I doubt they actually detect the cookware but detect the load. Since you have a working side you could take comparative measurements. I don’t know how they are inducing the power to the pan high frequency or voltage I would use caution you don’t want to fry your good meter. – Ed Beal Apr 23 at 14:26
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Six weeks and 3 PCBs later...

You might want to know, was it worth it? For me, yes. It was not cheap (around $700, including repairman visit), and it took many hours. But I did save some money compared to paying for a new stove. And it gave me a feeling of satisfaction and closure, which also counts for something.

enter image description here

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