Hi and welcome to JustAnswer,Thank you for the question and your patience. Should you still need assistance for information purposes only...Initially and sorry but I have to ask, are you then considering a DIY (do-it-yourself) repair approach? If yes, do you have access to and familiar with a multi-meter and even a soldering iron?
Perhaps more importantly, are you familiar with the electronic parts and comfortable working with the unit live?
I understand and unfortunately can't on phone calls due to my location and the process of diagnosis/repairs.
Would you perhaps prefer another member and/or alternate approach to your concern?
The question would be re-opened as I would rather opt out.
I am not sure how to provide DIY/repair guide in the absence of a multi-meter and a soldering iron.