When I turn on tv the picture comes on for about a second then goes dark. Sound works perfectly. Same thing occurs with every other channel. Same thing happens in dvd mode., sound but no picture. I have unplugged things and plugged back in with no change. Any solution?

Hi Tim,
If all the boards you replaced were good and working, the only thing remains is the panel if the backlights are on. Please see that the LVDS cable is carrying voltage to the Tcon board.
Good luck.

Technology changes at a high rate of speed, as we all know. And High Definition (HD) has come a long way in a very short period. Since your television still works perfectly otherwise, I don't think that it's a problem with the set itself. It may only be a victim of technology.

Does this only happen with High Def channels? Does it happen every time you change to another HD channel? If you answer 'yes' to either of these, it is most likely due to the television's processing capabilities. Because of the high amount of data that is required to deliver HD content, manufacturers have found creative (but not necessarily convenient) ways of dealing with the processing issues (blank screen delay for example). Since the audio and video signals for any given television station (either HD or regular) are transmitted separately, the television has to process that data internally so that you get the picture and sound aligned properly when you are watching it. HD broadcasts are much more demanding than regular stations requiring manufacturers to constantly improve this processing speed with every new model. On some televisions, the channel remains blank for a few seconds to allow the television to configure all of the information so it looks good when it's ready, which could explain the delay you are describing. At the time your television was manufactured, this may have been the best technology your manufacturer had to offer. On my personal flat panel, I get the picture and sound right away, but I have to wait about 15 seconds for the sound to catch up to the picture which I think is more annoying than being forced to look at a blank screen. But that's just me.

Hope this information was helpful.

Hello, it sounds like your inverter board is goin out on the set, when you change channels if you notice on almost any TV the screen goes dark and the new channel appears, it sounds like you are not getting enough power out of the inverter board to power up the backlight enough to come on. This is why the sound remains because everything else works fine and the sound is connected to the main board.

I have HLN 5067wx after replacing the color wheel and inserting new lamp There is sound withou the grinding but absolutely no picture; What is going on?

switched HDMI plug from HDMI1 to HDMI2 port and that solved the problem

You need to get this tv service asap.i beleive that the problem is in the inverter board or yb board.


good luck

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Holding the power button down for 10 seconds fixed this problem on my Regza 47"

check the auto darkness feature

it in the manual

westinghouse_w32701_27_in_hdtv_lcd
power on no picture good sound and channel page up and down works
on background u can see dark picture

Next time it goes dark do a flash light test to see if your inverter board is fubar.