Not sure if anyone else has experienced this? I did try a

but couldn't find anything!
Every few power downs my lilliput seems to forget most of the settings I've given it (noticeably Contrast, Brightness and the Color levels, but probably all of them... these are all I change). This is really annoying as the brightness needs to be at full for it to be visible in the daytime.
The strange thing about it is that there seems to be no pattern to it... sometimes I can power down (screen is powered from my 150watt Opus), power back up and it's all fine... other times it will have lost all the settings.
Any bright ideas anyone?