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Category: TV
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Experience:  30 Years experience. Authorized Warranty servicer.
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I have an RCA TV L32WD12 no picture on all inputs, sound

Customer Question

I have an RCA TV L32WD12
no picture on all inputs, sound is good on all inputs.
With cable, I have the image noise, garbage.
With video inputs, a black screen.

I have:
1) backlight works.
2) Menu on the screen, good display.
3) Auto channel scan work with analog cable.

The main board (on back center) have 3 sub-board (I excluded tuner board). I check the power supply capacitors with ESR, all good. I have no service manual.
What sub-board is not working?
Submitted: 3 years ago.
Category: TV
Expert:  Rick williams replied 3 years ago.

Hello [Sir/Ms], My name is Rick and Thank you for posting your question on Just Answer! I will be happy to help you with this problem,

 

I see you have 0 accepts on three answers,, what were your options,,,i dont want to waist our time with the same info

Customer: replied 3 years ago.

I need a technical answer, not a saler answer.

Do not tell me to go bring it to a repair center. I want to repair myself. Which sub-board is defective? Do You have case like this one?

I do not want to waste your time if you have no real solution.

Expert:  Rick williams replied 3 years ago.
another tech will be with you shortly
Customer: replied 3 years ago.

I received an expertise from a tech of FixYa.com.

I found my problem, it's the Scaler board.

Thanks

Hello, I have other comments and I bought the service manual.
I watched when it becomes hot, regardless of video input, I see noise on the screen (video garbage) as a TV channel with no signal but the menu on the screen is always clear and stable.
I removed the tuner board, Analog Digital Qam board, AV board.
I have only the power supply, T-con and Scaler board, the problem still exists.
I warmed the Scaler board, I have a lot more noise on the screen. When I cooled the chip IV200 (Pixel Works PW2300-30L), the noise disappears, the screen goes black but the menu is there.
I do not know the function of this chip. I checked all the sub-supply (regulator) on the Scaler board, not easy, they're all good.
I looked on the T-con board, nothing damaged (no schematic for That board).

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Expert:  Rick williams replied 3 years ago.
great job
Customer: replied 3 years ago.
Sir, I have not received your news from JustAnswer so I contacted another technician.
My last post is by way of information for you and your colleagues.
Expert:  Rick williams replied 3 years ago.
thank you we are well aware of this,, but no tech wants to deal with an upset customer,, we are here to help you,, not be talked too like animals have a great day will close you out and report
Customer: replied 3 years ago.
Sorry, that was not my intention.
I admit that I may have been rude.
I am willing to pay if I receive useful information.
Expert:  Rick williams replied 3 years ago.

No harm done,, i dont know what you may need from us now

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