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Equipment Repairs => LCD TV forum => Topic started by: ocf on July 16, 2016,13:44:55

Title: PROSCAN PLDED4616-UK - lines on screen
Post by: ocf on July 16, 2016,13:44:55

Hello all, great community here, very thankful for the support and advice, been a lurker up until now.

Issue I am experiencing is with a 46" Proscan TV, it turns on, shows the proscan splash screen then powers off and back on again to the splash screen. Stuck in this loop.

No obvious issues with mainboard, I did very little in the way of diagnosing the problem. I bought a replacement board of ebay, after fitting it the TV now powers on and gets past the splash screen.

The issue now is that white areas of the screen appear to have lines going through them, this also affects the Proscreen splash screen logo which is white, this was not happening with the old board, the logo appeared ok and smooth.

If it helps shapes also appear jagged and edges of things are not smooth, difficult to describe really.

I hooked up VGA from a PC and this source was also affected with the white problem, this issue also affects the TV settings menu.

Any suggestions? I still have the old board, tempted to swap it back to see if the Proscan logo displays ok again just to make sure I didn't damage anything else when putting the TV back together.

Images of problem -

https://postimg.org/image/g4xj7uhwn/
https://postimg.org/image/j0ameplwn/
https://postimg.org/image/wv8wx6gbr/
https://postimg.org/image/osaqluvqf/


Any help greatly appreciated!

Title: Re: PROSCAN PLDED4616-UK - lines on screen
Post by: downunder on July 17, 2016,04:29:14

Hi ocf,

Are you sure the board came from a 46" TV. Don't ask me how because I don't know, but can you access the service menu and see if there is an option for selecting screen size, panel type or TV model number......just an idea. Can't recall seeing a picture like that.

Bruce

Title: Re: PROSCAN PLDED4616-UK - lines on screen
Post by: ocf on July 17, 2016,06:52:40

Thanks for the reply mate. Starting to think its not from the same size panel. Also having issues with the buttons which seem to be mapped differently for this board! Volume up is now menu and channel + is now volume etc!

Feeling really stumped here and I'm out £40, oh well you live and learn!

I've been trying to get in to the service menu hoping to choose a panel size like you suggested but I cant access it. All the guides give various button combinations to try but none of them are working!