Inverters - general

[Turnip]

Hi knowing folks,

Note that most inverters have inputs for brilliance and on-off, are there general voltages to check on these inputs - ignorance is yet us - Chris.

PS - Only entered this as have a Technosonic LCD3201S, using Inverter  – CMO I320B1-16A where 24 supply is Ok, all fuses are Ok, set has sound, 'LCD on' is 3.5v, but still no backlight - wondering why no pic  ?