DFI questions litter robot 3

Hello,
So my DFI failed and I’m one month off warranty pretty awesome. So I’m ordering a new one when they get back in stock… But I have some questions on how this sensor functions. Is it optic-based sensors? Also, I’ll attach a photo of the failed one. I am wondering if I could use a PCB none electrical contact sealant to seal the board to maybe stop this from happening in the future not sure. I still have a bottle of MG Chemicals 422B Silicone Modified Conformal Coating, So I might give this a shot. Any ideas on if this would help protect the board so I’m not dropping 100 bucks every 20 months?

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Hi @shawntb,

Can you check with your cellphone camera if you are getting IR light from the board?

Something like in this video: https://www.youtube.com/watch?v=vsSZ3IMUQYE