Re: Sceptre 47” led screen problem
There is no scart socket on this tv. Would the bad capacitor be more likely in the tcon board or the main board? I don’t see any bulging. Is there anything else to test or is this tv probably just toast?
Thanks!
Georgia088
Senior Member
Last Activity: 03-22-2023, 03:06 PM
Joined: 09-01-2014
Location: Thomaston georgia
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Re: Sceptre 47” led screen problem
Ok, you lost me there. I have disconnected the ribbons connected to t con/mainboard several times and reconnected. I don't have a second tv like this one. Do those voltages show that the t con/main board are good? Again thanks for all of your help!Leave a comment:
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Re: Sceptre 47” led screen problem
Ok, finally got a chance to recheck. All of the values I showed in the previous post were correct except vgl should be -4.8 instead of 4.8.
Here is what I had:
Hvdd- +8.1
Vin- +11.8
Vcc18 - + 1.6
Vdd- +16.3
Vgl- 4.8 (This is actually -4.8)
V core - + 1.6
Vgh - +27.9
Thanks again for all of your help!!!Leave a comment:
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Re: Sceptre 47” led screen problem
Ok, I will check this evening! Sorry! The other values look correct?Leave a comment:
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Re: Sceptre 47” led screen problem
So the Vgl should have a negative value? If it doesn't have a negative value then the tcon is bad? Is there a way to confirm panel and main board are good?
thanks!Leave a comment:
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Re: Sceptre 47” led screen problem
Ok you are right. I am both blind and stupid. I was only looking up around where the ribbons connect. Sorry! But here is what I got
Hvdd- 8.1
Vin- 11.8
Vcc18 - 1.6
Vdd- 16.3
Vgl- 4.8
V core - 1.6
Vgh - 27.9 (I am not sure I put the probe in the correct spot for this one. As there was no spot to check very near the writing. I chose the closest point.)
I really appreciate y’all walking me through this!
Thanks!Leave a comment:
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Re: Sceptre 47” led screen problem
So get voltages of the things with “vs” on the board and post them back here?
Thanks!Leave a comment:
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Re: Sceptre 47” led screen problem
Forgive me for being stupid but I don’t see thes points on the tcon. I have “vcom vcomr-fb vst vgh even, vghf, gckl6, gclk4 gclk2 and z out. Am I looking at the wrong thing?
Thanks!Leave a comment:
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Re: Sceptre 47” led screen problem
Thanks. Let me make sure I am understanding correctly. I should power on the tv. Put the black probe on the chasis and red on each of those points you have listed on the tcon board? Is this correct?
Thanks again!Leave a comment:
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Re: Sceptre 47” led screen problem
Ok. And to give you a little more info. If I disconnect cable one and connect cable two: the screen has no vertical lines on either side, but the screen is two different colors divide directly down the middle. If I connect one and disconnect two. The screen has vertical lines on left side and blank screen on the right. The screen is always blank on the right no matter what is connected.
Pictures of tcon are attached.
Thanks!...Leave a comment:
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Re: Sceptre 47” led screen problem
I get no image on half the screen and vertical lines on the other half regardless of which ribbon I disconnect.
Thanks again!Leave a comment:
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Re: Sceptre 47” led screen problem
Ok. I took the cable off of what i believe is tcon board. The first gray picture is with one ribbon disconnected. The second (more green) picture is with both rbbons disconnected.
Thanks again!...Leave a comment:
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Re: Sceptre 47” led screen problem
For several weeks the tv had really green tint to picture. Then one day after start up it went from really green tint to lines all over the screen. Every now and then you could make out an image. Now it looks like this:
Also attached is back of tv that shows boards.
Thanks again bud!...Leave a comment:
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Re: Sceptre 47” led screen problem
Thanks! However, reseating the connectors didn't seem to help. Is there anything else I can try or test?
Thanks so much!Leave a comment:
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Sceptre 47” led screen problem
Hello and thanks in advance. I have sceptre led e475bv. The screen started having a very noticeable green tint to it. This went on for several viewings. It just did it again except when I turned off and back on the screen came up with lines all over the place. Every now and then I can read something, but not often. This is in all inputs.
Is there anything I can check or do to fix the issue?
I have folllowed the advice from the forum and troubleshooted some TVs before. I'm hoping I can do the same with this one.
Thanks! -
Re: Philips 32pfl3403d/27 no power
Ok, so I got a little side tracked on this project, but I purchased another main board for this tv. I plugged it in, and I get basically the same thing that I got with the first replacement main board (The white light on front comes on the a blue light comes on on the inverter board (I think this is the correct name) but there is nothing on the screen. Any ideas what I can check?
Also, Once I press the power button after the tv is plugged in, the white light on the front of the tv comes on. The white light will not go off no matter...Last edited by Georgia088; 05-18-2017, 08:05 AM.Leave a comment:
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Re: Philips 32pfl3403d/27 no power
I had 11.8v to both sides of fuse.Leave a comment:
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Re: Philips 32pfl3403d/27 no power
Ok. I checked the fuse and it is good. Is there any thing else I can try or anyway to combine the two boards to make one work? I can return the main board it but I want to get the tv working. I can't find any other exact matches for this main board. Thanks!Leave a comment:
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Re: Philips 32pfl3403d/27 no power
Ah. Ok. So check the resistance across it? I will and see if that's possibly my problem. I still feel like the main board is slightly different than the original but don't know how to confirm. I can't find any other main boards that have the second number the same on the white sticker as mine. Idk if this is what I should match or not.
If it is a firmware issue could you flash firmware or if pins are arranged differently could you switch places? Just trying to come up with something.
Thanks !Leave a comment:
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Re: Philips 32pfl3403d/27 no power
Ok. I took the metal cover off and took a look at this board. I don't see a fuse. I tried checking the voltages acrosss the small copper points that are in the picture and got 0.8 v on all points with tv turned on and backlight on. I'm not sure what I should be getting. Any ideas? Thanks again!...Leave a comment:
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