Gas hob won't stay lit. How to replace thermocouples. IKEA glass top.

How to change thermocouples in a glass top gas hob cooker. If the flame won't stay lit but the spark is ok, and you have cleaned the jet, the thermocouple is probably faulty.
Why not change all 4 thermocouples while you have the hob dismantled?

[@diradeb]

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[@leelovesnature]

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[@davy8807]

good job!!!

[@leelovesnature]

Thanks for your appreciation