If there are no lights on the camera/transmitter (usually one red and one blue) this usually
indicates the battery has either failed or is not charging correctly via the USB charger which
should output 5.2V when plugged into a suitable power supply. If not, this needs replaced
with a lipo usb charger,
not
just a straight through power supply from a usb cable as it needs
a dedicated charger to sense the voltage in the battery in order to cut off supply to it.
You could then use this opportunity to replace the internal battery, if desired, with an
external single cell one that you can remove to charge and wire on a JST or connector (or
one of choice) to power up the camera and it’s transmitter. Longer life if higher capacity as
the one inside is only 250mAh and it would probably be a bit more reliable!
If it is still partially working (normally because of a melted servo) just disable the pitch
and/or roll functions by pulling out plug 2 and 3 respectively from the quad and use it simply
as a FPV camera.
Fpv monitor
Not switching on.
As with the camera this may be indicative of a failed USB charger, test it with your meter, it
should output around 5.2V when plugged into a suitable USB power supply. If not, this
needs replaced with a lipo charger,
not
just a straight through power supply from a USB
cable as it needs a dedicated charger to sense the voltage in the battery in order to cut off
supply to it.
Everything is internal from here so opening the monitor is a must. Fortunately there are only
4 screws holding the back on. Inside you will find the small LiPo battery as well as access to
everything else for that matter.
Again, test the voltage of battery, if not approximately 4.2 Volts when fully charged then it
has probably failed and may need replaced.
