I should have put in my other post regarding brightness issues that I am using the Dirtyharry fan based firmware.
I have now found within all the settings the Brightness, Contrast and Gamma settings, I set these to how I want the brightness ect and OK everything and all is
how I like it.
If I switch the Retron Off and On again the settings have reverted back to the default.
Anyone know if this a known bug or am I now missing something else to retain the settings that I want.