audiovox car overhead dvd player black box issue

[freakaftr8]

so the wife and I just bought a 2005 Lincoln Navigator that had this installed in it looks like either the vehicle never came with a factory overhead DVD player or someone replaced it sometime anyways problem is is there is a black box right in the dead center of the screen a little over to the right everything behind the black box you can see the movie playing you can flip it to sources see the static on the screen oddly static is on the screen long enough the black box flickers away really quick and comes back. It's like everything in the black box when you turn up or down the volume the volume on screen display you can't make out it's like gibberish almost like alien language with a bright green background it's obviously a video processing problem but here's the thing there's no video processor on the main board but there's at least 60 LCD wires is going into the LCD from that board but I can't find the video processor on the main board now I disconnected the DVD player and all the accessories except the power into the mainboard and the red and green bars still appear in the black box on the screen so it is in the board. Is there a processor behind the LCD panel?

[freakaftr8]

Re: audiovox car overhead dvd player black box issue

[freakaftr8]

Re: audiovox car overhead dvd player black box issue

by the way I tried every configuration there is with the remote control thinking it was a closed caption issue and its not

[freakaftr8]

Re: audiovox car overhead dvd player black box issue

It seems more now that there is a problem within the osd processing. There is a red box lower right of the screen. When I do something like turn volume up or down as soon as the display (which I cannot make out) goes away I have full screen for a split second then back to the black box.

here what the osd looks like

[freakaftr8]

Re: audiovox car overhead dvd player black box issue

I found what appears to me the mainboard/tcon. It's behind the lcd screen.

[freakaftr8]

Re: audiovox car overhead dvd player black box issue

On TVs and monitors, doesn't the eeprom hold the programming for the on screen display? And for that matter also the closed caption?

[freakaftr8]

Re: audiovox car overhead dvd player black box issue

Here is the mainboard


That big IC is a welltrend wt8801tr and I downloaded the data sheet for it and it houses the osd it appears.


When I pull up the menu it's a white box with a green bar. I cam cursor up and down and the bar moves with it but no text in the boxes. Some things corrupt there. Too bad I can't re flash it. There's no firmware or usb port.