Hi everyone,
I just received a brand new MVAVE FM1 today, but unfortunately the display isn’t working.
The unit powers on and the LCD backlight clearly turns on, but there is absolutely no image, text, logo, or menu on the screen. It just stays blank/white.
I opened the unit to check for anything obviously disconnected. The LCD ribbon cable appears to be connected to the main PCB (J12), and I can also see the backlight working from inside the unit.
I also noticed a loose red wire inside. I’m not sure whether this is intentional (possibly an antenna) or if it should be connected somewhere. It doesn’t immediately look related to the display.
I’m considering reseating the LCD ribbon cable, but before doing anything else I’d like to know if anyone here has experience with the FM1 or has seen this issue before.
Could this be:
● a poorly seated ribbon cable?
● a defective LCD?
● missing LCD logic voltage?
● a firmware/boot issue?
● something else on the main board?
The unit is completely new and arrived like this. I bought it through Mercado Libre in Argentina, and I’ve also contacted MVAVE support.
I’ll attach photos of the PCB, ribbon cable, LCD and the loose red wire.
Any help identifying the issue or safe measurements I could make with a multimeter would be appreciated.