Question about Proscan 40LD45Q TV

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Black picture My proscan lcd tv 40ld45q all of a sudden stopped showing a picture and only has sound. black picture less than 2 months old ..manual states to press input button repeatedly...did that but how do you check caption for mode in panel when you can not see anything?

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  • Proscan Master
  • 749 Answers

There are two common problems with Proscan 40LD45RQ: the power supply / inverter board (it's a combo) and the T-CON board.
The former is more common and that's probably the case here.
For more details see
http://blog.coppelltvrepair.com/search?q=40ld45q

For a repair service or DIY repair kit check
http://www.coppelltvrepair.com/search?Q=40ld45q&As=false&Pf=&Pt=&Sid=false&btnsearch=Search

Hope this helps!

Posted on Jun 12, 2013

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  • Proscan Master
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Ur LCD inverter board is dead.Replaced the LCD inverter board.U will get ur picture back.Tries websites like Shopjimmy.com,Ebay.com to buy a refurbish LCD inverter board for the replacement.It a long board in shape.

Posted on May 09, 2010

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1 Answer

Diagnosing tv auto shut down.


The TCON board is not junk, if anything it is the mainboard that is faulty.

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replace the power supply board!

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OK I Have a 40" Proscan 40LD45Q
had the power problem when you turn it on it would flash and then cut off again.
after checking I found that the transistor on the power board was bad.
Its one of the 2N4401 transistors found on the cold side in between the
cluster of resistors and and mosfet heat sink. kind of hard to get too
but replaced it and tv works great now.. $1.19 at radio shack for the part.
Hope this Helps ..
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Feb 22, 2012 | Proscan 40LD45Q TV

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I have a ts-w60 powered subwoofer, A sx-c605, and 2 sx-na502 speaker system, all Aiwa product. My question is, if you could draw a basic diagram how to connect to my PROSCAN lcd tv model 40ld45q. thank...


Since they're all passive speakers requiring amplification, you don't connect them directly to that TV.

It only has digital audio out and earphone analog audio. No amps or direct speaker connnections.

You might want to look at the manual for things like diagrams.

Mar 22, 2011 | Proscan 40LD45Q TV

1 Answer

My 3 year old Proscan 42" LCD TV picture suddenly


On the far left and right inside the back on panel are inverter boards. Replace or look for capacitors buldged, swollen, or cracked on their tops. Replace defective caps with original value and make sure replacements are 105 degree for longevity. Common problem, let me know if this helped.

Sam Farrell

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My remote dose not work. I Have had it for only 2 months!!! 1:Checked voltage on batts both read 1.67v 2:Cable company tech said eye on TV is defective.


Tv only bought for 2 months,no way the the tv IR board dies that fast.The tv remote CPU is shorted and dead.The remote is the problems.Call Proscan customers service,talk to them get ur warrenty at work.Tell them u need another tv remote.Might have to send their old remote back.

Oct 25, 2010 | Proscan 40LD45Q TV

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