A lot of Philips GC83xx boiler steam iron devices seem to have 'switch off' issues after about 2 years of usage. If you notice that the light around the on/off button is fading, especially when pushing the steam button, your problem might be caused by the capacitors in the power supply. Verify this by checking the power voltage (blue wire on the power board connector): it should be 24Volt dc. If this is significantly less, try replacing the big capacitor on the power board. But be carefull: the whole board carries 240Vac, and the capacitor should only be replaced by a certified safety capacitor (X2 type) with the same operating voltage and capacity.
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