Electronics > Repair
Repair of Bosch induction cooktop touch controls
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scooch:
Hi Domini380.

Also having the same issues with several buttons.  Domini380 can you please post a picture of these copper strips and how attached?
I have been researching this issue for over a year and this seems to make sense!  Thank you.
cozza:
Hi Domini380,

Thanks for figuring out how the EGO touch system works and what to do when it fails.. that all makes sense now.

The Bosch wall oven has now developed an annoying fault, where once or twice a month it will randomly turn itself off while cooking - no fault code is shown, it just plays the turn off tune and shuts down. Fortunately I'm normally within earshot and hear it abort, but it could end up being a very late meal otherwise!  |O

There's something to be said for mechanical switches and simmerstats after all.

benneton:
I will put my 2 cents, if you don't mind. Had similar issue with my De Dietrich induction plate.

What I discovered too that touch panel is responsive with direct capacity change with a simple touch of screwdriver on it. I suspected that either some passive components are weared-off or that glass would have some issue. Tried with some glass that I had from some older plate - it worked. So my conclusion was that there's some issue with the original one's coating from the inside and I was right. I just taped some insulation tape from the inside to separate the touch areas. Worked well after that. My guess it heat damaged it somehow (maybe near placed or too big cookware?). This works for 3 years now (my concern was it won't last due  to simple insulation tape that I've used - thought it would peel-off - it didn't obviously).

For the other Sauter's cooktop, I had similiar issues but that time it was due to some faulty filter caps on the power board. Power supply from the power board to touch panel had some unwanted signals on the 5v and 12v. Maybe it affected multiplexer/mcu work somehow.

Hope this helps.
digicur:
Hi Benneton,

could you please give us more details about your solution to this touch control issue? You applied small pieces of insulation tape on the back of the glass plate in order to separate each single touch area from the other touch areas? Is that correct?

Thank you
Phil
benneton:
Hi Phil,

Yes, that's correct. It seems like existing coating "expired". :)

Sorry for the late reply!

Regards!

P.S. Could be that coating became conductive. Can't imagine any other explanation currently...

The indications that were present on De Dietrich's hob before I applied the tape solution (without particular order):

* Not responsive
* Multiple key pressed error (dashes blinking on the display and beeping)
* Turn off seconds apart from the power on pressed
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