Hi Eonon,
You asked me to send you my email address and order number. I was able to buy my GA5151F off Ebay from someone who had imported one but decided they didnt want it, which saved me the import tax, and it is not directly from Eonon. I can confirm that the unit i recieved was brand new, with its protective stickers on and the inside bags sealed.
I have managed to get my unit worked better. I have added the RCA connectors to the harness, and this works a lot better than changing the amp ratio, which i was instructed to do. I have also increased all the audio settings to 20, and have added an extra earth lead from the back of the unit to the cars chassis.
The only problems i have now are:
1) there is a buzz whenever i touch the screen,
2) there is a loud buzz whenever the interior lights dim (when the doors are closed).
Thanks for your quick responses, and I hope you can still help me further.
Dan