I just got a new xbox arcade and i exhanged it 3 times due to getting a hitachi 79 until i got a benq that i
could flash..it works perfectly but the problem is everytime i go to start the xbox for the first time of the day it turns on but the video is not seen on my screen.. I have to disconnect the video cable from my xbox and reconnect for it to work..once i do this every time i turn on and off the xbox it works fine..it just when i first turn it on for the day..any ideas? please let me know...maybe my cables going out? or is it maybe the psu unit?

does your video cable have a loose connection? have you tried borrowing a video cable from a friend to see if that fixes the problem? it sounds like a cabling issue to me, but some tests should verify it for you.

im going to try the vga cable that they gave me with the arcade to see if that fixes the problem..is there any other way i can test the xbox...