Why will my ToxCO not turn on?
This may simply be an issue when the batteries has died, you should replace the batteries and check if this has been fixed.
This can also occur when the screen driver has not been updated after a screen change or the firmware has been corrupted, fix both of these issues by reprogramming the device via the Bedfont Monitor Recovery Tool.
You should contact your distributor to arrange a PCB repair/ replacement if the PCB has failed electronically or your batteries or sensor have leaked.
Also check that the programming switch hasn't been set to 0, remove battery cover and set the switch to 1.
If the problem persists or has not been resolved by the information provided above, please contact Bedfont or your local distributor for more advice.