Electronics > Repair
Repair of Bosch induction cooktop touch controls
Otso:
Thank you ievosabo and everybody! With your aid I was able to fix this on my hob.
I've only tried the 7, which was broken, and it now works perfectly! I'll go on and the the same for the remaining failing buttons (about 4 more).
I took a strand from multistranded ethernet cable and soldered it to the back where the button is attached. I also tried soldering to the resistor, but this one was too difficult for me to reach, and I managed to melt the button slightly when I tried.
Beware though, that you might mistakenly pull out the original solder for the pad, which I did at least partially. I first tried soldering a thicker wire, from a single stranded ehternet cable. It was too thick and heavy, and difficult to attach, and I managed to pull out the solder with that one.
Here's pictures of the front and back.
Otso:
I ended up repairing 9 buttons. Now it's good as new again! Thank you once for the advice. I would never had figured out this myself. And no components needed to be replaced.
In case anyone is wondering which resistor to attach to, it's the tiny resistors next to the button. As has been said in the thread, to make sure your are connecting to the correct resistor on the correct side, measure that the resistance is close to 0 Ohm between the resistor and the tiny pad on the back to which the button is connected.
Here's a photo showing some of the resistors encircled with red, and also showing one of the buttons I fixed.
ELBUTMAN:
Hi all, I could also repair my faulty touch button using the suggestions from Domini380. In my case I could solder the copper foil directly to the metal circle in the board on the base of the button, that wasn't completely covered by the pad in the edges. It works perfectly now! Thanks again!
MAC
optic:
Just repaired with your help. Only thin wire, without tape. Soldered from bottom, much easier. Pictures attached.
Swake:
Another win!
Given the number of cooktops that fail this clearly falls in the category of the manufacturing issues.
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