Hi folks
I have a BlueSolar PWM (LCD) controller that has a blank screen and is not charging. It is connected to a 40 watt panel, and is used to keep the starting battery topped up on my camper when it is sitting for long periods.
On a sunny day, I meter 20+V at the controller input terminals, and 12.8V at the output-to-battery terminals. However, the screen is blank, and it is not charging the battery.
After only three years, has it died?
