BLACK SCREEN, AUDIO OK

since the self generated menu displays ok id say you don't have a monitor problem , could it be that maybe somehow it got switched over to maybe an "open" input port (example: hdmi-2) as this would explain things a bit , also when you tried the other tv did you use the same cables to connect it as the non working tv ? as that also would explain things

Hi pasu, Normally if you can get/program Chs 2 and/or 4 as well the other channels, then Ch 3 should also be programmable. If this is not possible, perhaps you can try to manually program by selecting "03" and add to the memory "+" in some brands/model. If this is still a no go, perhaps you should seek the services of qualified professional since this would apparently be an internal software problem. You can also try a hard/full reset by unplugging the TV from the mains for couple of hours or as prescribed by your TV's user manual. If the TV has Video input features, a possible temporary work around the TV's Ch3 problem is to use the Video1 or the Audio/Video INput of your TV and use an old VCR to connect to your cable box. Remove the coaxial cable from your cable box to your TV and connect it to the RF/TV INput of your VCR. Use a 3 way RCA to RCA connector (usually Yellow, Red & White) to couple the Audio/Video OUTput of the VCR to the Audio/Video INput of the TV. Select Video mode in your TV (so it doesn't matter even if you cannot program Ch3). Power up your VCR, select Ch3 in your VCR's tuner. I assume that to select channels you wish to view, you use a remote and channel selection is done in your cable box. What worries me is "...went to a fuzzy black and white screen..." which is indicative of another fault. Hope this be of some help/idea. Post back how things turn up or should you need further information. Good luck and kind regards.

Samsung HL-R5087W TV screen goes blank -tv/sound on - Forums ...

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CNETJun 11, 2015 - About a month ago, the at various times the tv screen would go blankeven though the tv ... Try turning off the cable/sat box when the happens. ... In reply to: Samsung SP50L7HX DLP TV linked to Sky HD box - same problem .... on it comesback to normal. however, once it went off again (Black Screen) after only 2-3 minutes. ln-t4069f picture problem lcd warmup - Forums - CNET
Jun 11, 2015
Samsung LCD TV LN-T5265F Black Screen Diagnosis Help ...
Jun 11, 2015
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It is a LCD set and if sound get it in a very dark room and with a flashlight and the set on look to see if you see a very faint image on the screen.

Almost all these sets use a back light system for brightness---an inverter of some type to power the lights---either the back light is bad or the voltage for it is not present or being turned on.

no power to tv light blinks on and off

Hi,

Your screen is showing a black picture because the closed caption function has been activated. When the closed caption mode is on the screen will display an 80% black picture.

To turn off the closed caption and regain a full screen please follow these steps;

1) Press the Menu button

2) Use the up and down arrows to navigate to Closed Caption

3) Use the right or left arrows to select it.

4) Use the right or left arrows to select OFF

5) Use the up or down arrows to select Finish

6) Use the right or left arrows to save the settings and exit.

You should have your full screen back now minus the annoying black box.

If this solution has helped please do take a moment to rate it.

Thanks for using FixYa

If you are seeing light then the back light is working. Can you get a menu?Do any of the other video inputs work? If no video but has backlight and no men or any on screen display replace main board.

I unplugged everything and then reset-up the tv, dvd player, audio, and other components.

The black screen with audio working ok is the inverter card.
Just replaced mine. It is CMO part number VIT70002.00

The inverter provides the high voltage necessary to drive the cold cathode lighting.

A new card is about $180 but shud save having to dump the set.
Card is located on left side of the display (as viewed from the back).

Howard

try the diffrent inputs HDMI Composite component and see if the video comes on there are 4-10 diffrent inputs on these sets and make sure you select the right input on the menu the remote has a button for inputs a menu comes up and make your selection from there for the right input that you have connected to the tv most menus have TV (air) HDTV (air) video 1-6 HDMI and VGA