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KevinWhiteJA, Home Appliance Technician
Category: Appliance
Satisfied Customers: 8513
Experience:  18+ years experience as Appliance Tech.
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I have a Rangemaster RMB75HPECGL 75cm 5 Zone Ceramic Hob

Customer Question

Hello, I have a Rangemaster RMB75HPECGL 75cm 5 Zone Ceramic Hob Black Glass and its safety lock is stuck on and won't turn off
JA: Is your Rangemaster hob gas or electric? How old is it?
Customer: its electric and about 15months old
JA: How long has this been going on with your Rangemaster hob? What have you tried so far?
Customer: just today. I have tried turning it off at the power source and then trying again. but when I hold the lock button nothing happens and I can't turn on any of the rings
JA: Anything else we should know to help you best?
Customer: I don't think so no
Submitted: 2 years ago.
Category: Appliance
Expert:  KevinWhiteJA replied 2 years ago.


Welcome to Justanswer … my name is ***** ***** I will help you today!

I’m sorry to hear you're having trouble with your appliance; I know that can be frustrating.

Hopefully, we can get this resolved quickly.

Please ignore the automated phone call request.

Unplug the hob and leave it unplugged for around 50 minutes.

Then turn it back on and touch the key lock button for around 15 seconds.

Let me know how it goes.


If you're satisfied with my assistance, your 5-star Rating (from top of this page) at this time is appreciated as that's the only way I get paid for my assistance.

If you have any further questions, don't hesitate to ask! You won’t be charged any additional fees. Thank You!

Customer: replied 2 years ago.
Hi Kevin,
I disconnected the hob for a couple of hours and then tried again but it hasn't helped.
Any other ideas?
Expert:  KevinWhiteJA replied 2 years ago.

OK try this:

Press and hold the ON/OFF button first for 10 seconds, if the LOCK still appears then press the LOCK button for 10 seconds

Customer: replied 2 years ago.
no unfortunately that doesn't work. I've tried all sorts of different combinations with the buttons and different amounts of time holding the buttons but still nothing.
Expert:  KevinWhiteJA replied 2 years ago.

OK, unplug it and let it remain unplugged for 10 minutes

Then press and hold the start button and lock button together and simultaneously plug it back while holding these buttons.

Let go after few seconds and see if it works

Expert:  KevinWhiteJA replied 2 years ago.

Hi there, did that help ?

Have I answered your question?

I still see the question is open so, wanted to check if all is good ?


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Otherwise, I receive no credit for assisting you.

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Please ask me as many questions as you need.

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