I have a De Dietrich DTI708V 4 ring induction Hob.
After reboot (power on/off) Error codes d5. 6F, 20.A3 on left hand display. Right hand display not working and no response from touch sensors. After approx 30 secs display clears. No rings working.
Google research leans toward a power card issue. Bit sketchy though.
Also forgot to say, the hob is about 3-4 yrs old and has been working fine and has not been disturbed or had power cut etc…
On the odd occassion the right hand ring touch sense controls have not responded, but this has been fixed by a quick reboot.