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Why do I have a black screen?

but no pitcher but I got like new boards I replaced all the boards on the SANYO TV display do you think it could be one of the wires if so, which one would it be would it need an LED replacement or the power cord replacement if it's not giving an enough voltage to show the image?

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@thechoseno32660 so you have replaced ALL the boards? Sanyo made lots of TV's we need to know the exact model number for your TV. What exactly does it do? It turns on and you have no picture, your power LED turns on? Does it Blink? What have you actually checked?

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yes it turns on with no pitcher but I have sound on the TV when I tap on the TV screen I can see the white lights and yes I replaced all the boards on the TV when I try to turn the sound up or down it doesn't display on the screen it self here is the model number:B4200848713844

Sanyo

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@thechoseno32660 your model number does not return anything. Does your TV has a label on the back cover? Post a picture of that label. Also post a picture what your boards etc. look like. By that I mean remove the back cover and take good, well focused pictures of everything you see. Post those with your question. This does sound an issue with the panel. Check your backlight first.

Turn the TV to a channel where you can hear the sound. Next, use a flashlight and shine the beam at an angle against the screen. Do that in a darkened room. See if you can make out shadows or shapes. If you do, then it is your backlight that has failed. If you do not see anything, unplug your set and remove the back cover. Take those pictures as suggested. It is possible that this is caused by the LVDS cables to your panel or by failed buffer boards. We need to see what you got going on here.

Adding images to an existing question

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when I look at the screen I see black lines with the TV on on the side then when I tap the screen I can see the white light with each tap on it I replaced all the 3 boards on the TV sanyo screen sorry for the late reply I was resting my foot,

any who but yeah I can see black lines I cant change the screen I Dont see the vaulum controls move from low to high but I do get sound just a black screen with no pitcher kind of like this guy on youtube RN Ill show a relation.

https://www.youtube.com/shorts/eaou3YRIk...

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@thechoseno32660 yes, that is why I was inquiring about the symptoms. I would suggest you try a Tape-off instead of using a knife:-) Check these and proceed with a tape off https://www.youtube.com/watch?v=pfrRhw7-...

https://www.youtube.com/watch?v=zGAVbMQr...

https://www.youtube.com/watch?v=atNmhu7H...

Let us know what happens.

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okie I will try that but mine set up is different then those ones I got the power board in the middle T con the left then plug in ports on the right on the inside.

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@thechoseno32660 post some pictures of all of your boards and the way they connect.

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