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How do I fixProscan 40LC45S 40 in. LCD TV audio with no video?

Proscan 40LC45S 40 in. LCD TV Hello, I have a proscan 40lc45s that has sound but no picture (black screen). Does anyone have any ideas? I have checked for the obvious blown caps and saw nothing.

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  • Don Waryk
    Don Waryk May 18, 2014

    Yeah, I am thinking the same thing. I attempted to illuminate the screen with a high powered flashlight and only saw static on the screen while hearing good audio. I hate to purchase a power supply on just a hunch.

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  • Master
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This TV has a well known problem with the back light inverter board.

See
https://www.youtube.com/watch?v=cDAwGTP3RLY

Hope this helps!

Posted on Sep 26, 2016

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  • Televison & ... Master
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Could be a power supply problem.

Posted on May 18, 2014

Testimonial: "Don Waryk Yeah, I am thinking the same thing. I attempted to illuminate the screen with a high powered flashlight and only saw static on the screen while hearing good audio. I hate to purchase a power supply on just a hunch."

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Posted on Jan 02, 2017

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SOURCE: who makes the proscan 40lc45s tv?

http://www.oncorpus.com/Product/LCDTV/19LB30QD.htm

Posted on Jun 09, 2009

  • 2 Answers

SOURCE: Proscan 40' 40LC45S has a high pitched hum when it

Same problem here, there is a high-pitched sound in standby. As soon as the light turns blue and the TV is on it's gone. I actually exchanged this TV three times at Best Buy but all the models made the same buzz in standby. I was told that it's normal and in the store you can't hear it since there is too much humming from other TVs around. The power is transformed down to a minimum, just for the remote controls, internal clock etc. and this causes the buzz, like when you dim your lights at home. I hooked it up to a surge-protector for clean power and just switch it off over night. During the day it's hard to hear anyway. - Again, since this is my third (!) Proscan 40' exchange I can definitely say that this is normal for this model. I was just surprised that nobody mentioned the same problem so far on the Best Buy reviews.

Posted on Jun 11, 2009

  • 1 Answer

SOURCE: I need a remote code for my proscan 40

Try to codes for RCA. RCA and Proscan use the same code. It works for me for AT&T U-verse.

Posted on Nov 20, 2010

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