LCD Display

[CharlieL]

Hi please forgive me if this has been covered here before, but I just went out put a fully charged battery on my SCross and the LCD won’t switch on. I’ve disconnected all the connections, cleaned and reconnected but still nothing. Does anyone have any ideas?
I note on the back of the switch unit for the lcd there is a usb connection is there anything I could check there? Does the lcd unit have its own battery that may have died??
All help appreciated?

 

[Nealh]

Battery discharge fuse blown or bad connection.

 

[CharlieL]

Any idea on how to check the fuse?

 

[Nealh]

If you have a meter you can confirm if any fuse is intact as you should get battery (SOC) voltage on the discharge pins.

Look for a rubber/neoprene socket cover on the battery, often batteries have a car blade fuse to simply pull out. If one isn't accessible then it will be inside the case which is a rubbish design.

If the LCD doesn't work either it is broken or the supply between it and the battery is interrupted, the initial 5v voltage routes indirect via the controller where the Rx/Tx comes are exchanged.