My Indesit 562 IX cooker hood recently blew a bulb and the other one would not turn off! I had assumed that the bulb going had surged power to the electronic circuit board and ordered a new one £108. After fitting it, I also fitted Led lamps on the basis that they draw less current and if they failed, the electronics would be better protected?? As I fitted the first lamp, it lit despite it not being turned on, just as the ordinary bulb had done!!! After fitting the second Led lamp, they both glimmered but didn’t go out. They worked with the switch to come on but would not go fully out. So I fitted, one Led and the one remaining old lamp and bingo, they turn off. It would appear that I changed the circuit board unnecessarily as the circuitry is sensitive to the combined resistive load and also, this cooker hood is not fully compatible with Led replacement lamps. Thought I would share this to save others from making the same mistake.