20 Most Recent Proscan 40LC45S 40 in. LCD TV Questions & Answers

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TV turns on but no picture

The main power supply regulator section circuit fault. Either it will be a separate board, or the part of main board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/ It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size. Search the site by type in the "brand name" to your device; [Exclude the model number], in the "Search box at the top right of the display window of the Homepage" to get gathered related posts
8/20/2017 5:01:00 AM • Proscan 40LC45S... • Answered on Aug 20, 2017
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Sound no picture ,

Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis. http://electro-medical.blogspot.com/ http://electronicshelponline.blogspot.com/ To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced.
1/31/2016 4:21:30 PM • Proscan 40LC45S... • Answered on Jan 31, 2016
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Can my cracked screen be repiared

NO Just replaced
10/13/2015 7:38:29 PM • Proscan 40LC45S... • Answered on Oct 13, 2015
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Does the proscan tv have a reset button?

yes youtube or try www.proscanvideo.com for step by step.
2/22/2015 3:39:57 AM • Proscan 40LC45S... • Answered on Feb 22, 2015
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My color on my screen use to be excellent. Now it is green and pink. I have the manual but on the menu I see no where there is a color adjustmet

If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/ Faults & possible causes to LCD screen are given with illustrations. You can get an idea about the fault to an extent.
12/19/2014 3:33:57 AM • Proscan 40LC45S... • Answered on Dec 19, 2014
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My tv will turn on but no sound, no picture, no display,no menu will light up

Have you tried,
1 Changing the source.
2 Changing the batteries in the remote
3Getting a replacement remote or pushing the buttons on the tv itself
4 Asking a pro
11/6/2014 10:33:24 PM • Proscan 40LC45S... • Answered on Nov 06, 2014
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Why may TV has just sound with no picture

Back-light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis. http://electronicshelponline.blogspot.com/
9/20/2014 4:15:46 PM • Proscan 40LC45S... • Answered on Sep 20, 2014
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My proscan 40" isnt working theres no backlight

Do you have sound? If you have sound and no picture most likely you are dealing with either a back light fault or power supply problem. Dim the lights in the room, take a bright flash light and shine it on the screen with the set on. If you see a faint picture, it's back light/power supply related. If I have been of assistance to you please sign my gues book http://www.back2lifeelectronics.com/Guestbook.php
6/10/2014 10:29:12 PM • Proscan 40LC45S... • Answered on Jun 10, 2014
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What would cause a Proscan 40LC45S 40 in. LCD TV to have sound bt no picture?

the chroma ic could be shorting
6/8/2014 11:11:39 PM • Proscan 40LC45S... • Answered on Jun 08, 2014
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Proscan 40LC45S screen flickers, red light flickers, won't turn on

check bad component parts at the power supply board as will as burnt parts.
4/27/2013 8:15:15 AM • Proscan 40LC45S... • Answered on Apr 27, 2013
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T.v. doesn't start up

If total dead look inside for a fuse, if does nothing but power light is on in small way suspect power supply inside the set----if you can access that area safely look for any clear signs of burnt parts or even puffed up caps which is common.12_10_2012_10_13_31_pm.jpg12_10_2012_10_13_50_pm.jpg
12/10/2012 10:13:58 PM • Proscan 40LC45S... • Answered on Dec 10, 2012
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How to test tuner on 40lc45s

You have to open the set to replace the tuner. It will be soldered to a printed circuit board. You must have soldering iron, de-dolder pump, and all other testing equipment with you to replace it. It is a skilled work. A user, who is not experienced in working with electronic printed circuit board, can't do this work. After replacement, there might be some adjustments too. To do these adjustments, you must get into the TVs service mode option, which is quite different to that of user mode options.In fact, it will be best to contact any experienced service technician to do this work, rather than trying to do it yourself, and ruin the set.
11/27/2012 4:30:04 PM • Proscan 40LC45S... • Answered on Nov 27, 2012
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