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The Smart Oven® with Element IQ® is a trustworthy tool for the cook who wants a countertop oven that roasts succulent meat, broils, bake pizza, reheas leftovers and toasts evenly. Convection setting reduces cooking time by up to 30%. Model: BOV800XL

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replace control panel lighting

control panel lighting does not illuminate

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Hi,

Either there is a problem on the control panel pcb which supplies the backlight power to the LCD unit, a faulty connection on the board between the board and the LCD unit or the LCD’s internal backlight circuit is faulty and the LCD will have to be replaced as it cannot be repaired.

Here’s a link to just one supplier which shows the pcb with the attached LCD unit.

I cannot find a schematic of the pcb online. which may help you to trace the backlight power circuit to verify where the problem is. You could perhaps find the schematic by searching online for (insert pcb board number) and check if there are any results, Worth a try.

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Do you mean the power button doesn’t light up and nothing works?

Then yes, unplug and wait and replug. If it still doesn’t work it’s likely the thermal fuse.

If you mean the LCD doesn’t light up and the oven still works:

If it doesn’t light at all there is a simple current source on the PCB. Test the transistor and Zener diode.

If the display has become dim it is more likely to be the LED backlight that is failing. LEDs aren’t immortal and they normally become dimmer as they age and sometimes fail altogether.

It is possible to disassemble the backlight down to the components, you just need to be delicate and careful.

The backlight is a whitish flat rectangular piece of plastic with silvered edges and diffusers, and a small PCB with 4 blue LEDs on it. It’s right under the LCD and is held in place with a small amount of glue. Desolder the wires, push the backlight out gently a little bit , then you can peel the diffuser off where the LEDs are, then you can remove the little PCB. It’s all just glued in place.

LEDs need to be installed the right way, the PCB has markings A and K for anode and cathode.

This is the LED you can use: Kingbright APT1608LVBC/D .

These are 0603 size parts, so about 1.6 x 0.8 mm. Get an electronics person to do this if you don’t want to. You’ll for sure need a good iron with a small tip to do this.

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Try unplugging the unit for 20 seconds and re-energize it.

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tschneeber さん、ありがとうございました!
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