exhaust hood light repair

[twobbs]

I have a ~30-yr-old Gaggenau exhaust hood (model AH-144151) for which the hood light is broken and parts are unavailable.  The light and fan buttons are attached to the same 6x2cm printed circuit board-let mounted under the hood.  The light and fan circuits function correctly, but the light push-button has a mechanical latch that is worn out, so the light won't stay on.

The part sort of looks like this, but might be a bit older in model type.

I'm inclined to replace both buttons with $1 rocker switches.  However, doing so would bypass the little circuit board.  I'm reasonably comfortable that the circuit board is doing nothing with respect to the light.  I'm not so sure about the fan.  This is a single-speed fan, so there is nothing fancy there.  Is there any possibility that the circuit board is performing AC-DC conversion or some other critical function?

Thanks in advance for any help.

 

[Vance R]

On 3/29/2021 at 7:12 AM, twobbs said:

some other critical function?

Not likely, but you should be able to look at the specs on the motor to confirm.

[Terry Carmen]

On 3/29/2021 at 10:12 AM, twobbs said:

Is there any possibility that the circuit board is performing AC-DC conversion or some other critical function?

Some hoods have a temperature sensor that will run the motor on high if the hood gets too hot. 

>  This is a single-speed fan, 

Are you sure? Even 30 years ago, expensive hoods had at least a couple of speeds.