The heavy microwave oven on the first floor's over-the-range unit was making a sizzling noise and not heating properly. He disassembled it, tested various components, reinstalled it, and it’s now working well. Additionally, for the circuit breaker issue with the basement over-the-range unit, he ordered and replaced the 'switch' and 'latch receiver' at a low cost, providing excellent service. This was a huge help. If any issues arise with other appliances in the future, I will definitely contact you for service.
Thank you so much!