How to repair exhaust fan rattle?

I do not no the specific model you have but chances are that the noise you are hearing is the bearings(or brass bushings) are going out in your fan motor. Which in turn allows the shaft of the motor to not remain true and rattles. In laymen's terms, you just need a new fan motor. I hope this helps. "Be Easy!"

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Since it is new contact the people that sold you the oven for warrenty repair.

could be the fan,i've seen dust get in there and there's a screen that the fan blows air through to cool down the electronics,so if the fan is bad it's not cooling down your board and that's why the light flicker,how old is the unit,sounds like the board is damaged from over heating most likely from the fan and i looked up the model number and you can't get that board anymore,if the board is bad you could get it rebuilt,i just helped someone else with the same problem the board is discontinued,you have to have the board taken out,draw up a wire diagram and send the board out to have it rebuilt,when they send it back you reinstall it,and wire it.
https://www.appliancetimers.com/appliance?model=gbd307pdt7
maybe if the fan motor gets changed out the board won't over heat anymore and won't give you a problem but it doesn't sound good.i think the board will also be an issue

the fans wear out out and it sounds like your is on its way out you are better off replacing it soon before complete failer easy to replace your self if you need help let me know

From what you describe is happening, I would say that it is the fan that is causing the noise, not neccesserily the oven fan, because there is an external cooling fan as well, and these are the only moving parts that could cause a noise.
Hope this helps.

On the repairs I have done, it has always been a bad fan motor bearing. The only way you are going to be able to tell is to tear it down to the fan assembly and feel if the fan blade or blower is loose. Good Luck, Appliance Specialists

It is most likeky that the fan bearing is worn and thus causing the rattling sound. You will probably need to replace the fan. Check first that there is no obstacle in the way of the fan rotating.

Replacement of the fan will require the back of the oven to be removed giving access to the fan unit, which will need to have the wires disconnected and the fan assembly unbolted. Fitting is the reverse.

Always remember to switch off the power before working on electrical equipment.

If the fan is working, but there is no heat in the oven at all, then it is going to be the element that is faulty, assuming it is an electric oven.
If the fan is rattling, then could be loose fan blade, or the bearings are failing.
Hope this helps.

Hi

you need to replace the fan as this will be the cooling fan which cools the oven down. and can not be disconneted .

regards

Hi

Check this link

http://repair2000.com/oven.html