Insignia NS-55E480A13A. Backlogs flicker, then black screen.

[budm]

Re: Insignia NS-55E480A13A. Backlogs flicker, then black screen.

Too bad you did not test it without putting the LCD panel back together first, I usually run my for at least 15 minutes just to be sure before assemble the panel together.

[sameoldsam]

Re: Insignia NS-55E480A13A. Backlogs flicker, then black screen.

Well I did test it, they all went on, but how do I test them for 20 minutes?? ...especially since I'm going to have to strip the TV down again anyway. Also thinking I should change out the other side of the edge lighting too, even though they all work. What do you think?

[nomoresonys]

Re: Insignia NS-55E480A13A. Backlogs flicker, then black screen.

Make sure your backlight connections are all good nothing loose or not getting good tight connection.

[sameoldsam]

Re: Insignia NS-55E480A13A. Backlogs flicker, then black screen.

Thanks nomoresonys, I did, just gotta strip her again. Not giving up. does anyone know how to do what budm suggested to test them for 15 minutes or so? I can't imagine that means to stand there holding the probes on those tiny wires for 15 minutes.

[nomoresonys]

Re: Insignia NS-55E480A13A. Backlogs flicker, then black screen.

Think he meant to test and see if the backlights operates normally before you put it back together, making sure they stay on etc. would test it a few hours at least, making sure they stayed on, so if anythings wrong it's already stripped down and you can continue troubleshooting if needed.

[sameoldsam]

Re: Insignia NS-55E480A13A. Backlogs flicker, then black screen.

OK, I didn't know I could do that. So this time I will take it all apart, play and test stuff, put the other new led string in there, then put it back together again with everything but the panel parts. Right? Turn tv on to make sure all lights are working and let it run for a little while. Right? Thanks again!

[nomoresonys]

Re: Insignia NS-55E480A13A. Backlogs flicker, then black screen.

You should be ok, I'm thinking maybe your connection got loose during reassembly.

[sameoldsam]

Re: Insignia NS-55E480A13A. Backlogs flicker, then black screen.

Can I hook up ONLY the power supply and video driver board to the LEDs to test, or do I have to hook up all boards..t-con, motherboard, video and power? I could just try it but I don't wont to short anything out so I thought to ask you all first.

[sameoldsam]

Re: Insignia NS-55E480A13A. Backlogs flicker, then black screen.

I went with hooking everything up except the t-con board since panel is not there anyway. All LED are lit...So Bright! Will let it run for 20 minutes and report back. Although I probably won't be able to see again for awhile.

[sameoldsam]

Re: Insignia NS-55E480A13A. Backlogs flicker, then black screen.

Went off after 11 minutes. Ran it again, went off after 14 minutes. No LEDs seemed to get weaker, flicker or turn off ahead of that. Will watch closer this time to see if one goes off right when it shuts down.

Edit: Ran a third time, 14 minutes to shut down. Again, no flicker, dim down or individual led that went out.

[nomoresonys]

Re: Insignia NS-55E480A13A. Backlogs flicker, then black screen.

Not sure, maybe something is overheating and shutting it down, wonder if it could be a built in protection on account it isn't fully assembled but then again it wouldn't even turn on for you when you put it back together right?

[sameoldsam]

Re: Insignia NS-55E480A13A. Backlogs flicker, then black screen.

Thank you. Watching videos again. Hopefully someone else will chime in.

Suggestions anyone?

[nomoresonys]

Re: Insignia NS-55E480A13A. Backlogs flicker, then black screen.

Status is now when assembled backlights pop on for a second then go off, then with all but tcon connected, backlights stay on for about 14 minutes then shut off.

[budm]

Re: Insignia NS-55E480A13A. Backlogs flicker, then black screen.

When I test the backlights I run the power supply board by itself and force on with pull up resistors if the power supply/LED driver board does not have them. If you do the test with all the boards connected but without LCD glass panel connected then you need to provide video signal otherwise the TV will go into standby mode when it does not detect video signal for period of time.
BTW, some TV will not come on without T-CON board connected.

[nomoresonys]

Re: Insignia NS-55E480A13A. Backlogs flicker, then black screen.

Ok, so hook your tcon up and see if the lights stay on.

[sameoldsam]

Re: Insignia NS-55E480A13A. Backlogs flicker, then black screen.

Great, ok, so I will hook up T-con board and then plug cable into the main board, then let it run.

[sameoldsam]

Re: Insignia NS-55E480A13A. Backlogs flicker, then black screen.

So everything is hooked up again, including a cable box. I got sound, which I had, and I have a backlight tv screen. I do not have a picture, and I can no longer pull up the menu. I tried the cable box with the cable cord and with the hdmi cord, same result. I'm guessing it's something I'm doing wrong but I don't know what.

EDIT: It was something easy... a ribbon on tcon board! IT WORKS!

[nomoresonys]

Re: Insignia NS-55E480A13A. Backlogs flicker, then black screen.

Maybe your on the wrong input, try pushing input or source on your remote push it several time to cycle thru all the input/sources if you haven't tried yet.

[sameoldsam]

Re: Insignia NS-55E480A13A. Backlogs flicker, then black screen.

I don't even know how to Thank You All for your help!!! Thank you especially budm and nomoresonys for your expertise and sticking with me to the end! THANK YOU!!
XOXO XOXO. Photo attached, my sister would be so proud!

[nomoresonys]

Re: Insignia NS-55E480A13A. Backlogs flicker, then black screen.

SWEET, Always a pleasure to help someone as NICE as you are, you did a great job.