No problem. This very well could be the inverter, but we need to simply check the power coming from it. I am attaching pin outs for the printed circuit board, which is different but shares a power source as the inverter.
So, let's check the power coming in and ground for the inverter and if they are both there then you need to check for power coming out of the inverter. However, this is going to be AC voltage so just be aware of that.
Please see the diagrams below and let me know if you have questions.
Images (Click to make bigger)
Sunday, June 19th, 2022 AT 7:41 AM