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tv has audio but no picture

Mitsubishi TV LT-46265 has audio but no picture. Can use the remote to change input (blind change, since screen is blue or black). Replaced T-con but that didn't resolve the issue. Any ideas?

Red blinking light on LED board:

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Hi @smitty72 ,

Can you see the menu screens at all?

Blue screen usually means no signal and also shows that the screen works at least blue does anyway.

What did you have on the inputs when you said changed input? From what to what, Co-ax to HDMI, Component etc?

What is the signal source?

Have you tried a different one to prove the problem is with the TV or not?

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Hi!

No I can't see menu screens. I can only hear the audio to know which source I'm on (hdmi- tv ESPN or any other channel, compliment - wii games, and there must be a sat/cab that has a snowy screen cause I hear snowy/static/whatever it's called). I use the remote or input buttons on side of tv to toggle between source inputs, and the only way I know which one I'm on is by the audio.

I have 4 hdmi input options and I've exhausted them all. I do believe it's the tv, but was hoping the replacement of T-con would've fixed it :(

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The screen is more of a black,tho perhaps some blue. Not a clear blue screen tho

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@smitty72 with the TV turned to a valid station,shine a flashlight at an angle against the screen to see if you can make out shadows etc. This could be a backlight issue. Of course, do it in a darkened room to begin with. Any indication of the front panel Status LED's showing an error code? Something like a blinking Red then blinking Yellow LED? If so count the blinks. Let us know what you find. Since you already replaced the T-con board is there any chance you can post some images of the rest of your boards and post those with your question? Use this guide Adding images to an existing question for that. It will allow us to see what you see.

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Hi thanks so much for trying to help troubleshoot this issue.

I tried the flashlight suggestion but see nothing.

The lights on the front of the tv are a steady green light in corner (on inductor) and a solid blue line under the Mitsubishi icon.

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@smitty72 lets try a reset first just to make sure it is hardware related:

Name: A/V Reset, all inputs

When to use :When the audio or video performance or settings for more than one input seem to incorrect.

How: While viewing the TV, press the front panel buttons <INPUT> + <VOL

I added your image with annotations so that we all speak the same language and avoid confusion down the line.

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do we see 4 x stuffed leaky capacitors on the rhs top of the main pcb O O

cant make it out reliably O O

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Oldturkey,

Indeed, that's an English lab. :)

So I reset all inputs, but no change. I can see the screen switch from the bluish screen to black while the resets take place. But still no picture. I've also tried switching the hdmi cable into all available hdmi inputs but no picture.. still volume only.

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@smitty72 any chance you can post images of the individual boards. A closeup might reveal a suspicion of bad caps. It will also allow us to check the connector and we can give you some pointers on where and what to check with a multimeter.

BTW welcome to iFixit and yes, your dog as well.

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@oldturkey03

There is a blinking red light on the led board near the top (off to the left) I will upload pics and see if that helps. Could this be the issue?

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@smitty72 any light that is blinking could lead us in the right direction:-)

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