20 Most Recent Proscan 40LC45Q 40 in. LCD TV Questions & Answers


Fault to the main power supply regulator section. 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. Surf the site with patience. Pull up older posts.
http://electro-medical.blogspot.com/
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.

Proscan 40LC45Q... | Answered on Mar 13, 2016


Possible power supply problem,capacitors may have bulged and leaked restricting the supply from starting.

Len

Proscan 40LC45Q... | Answered on Sep 14, 2014


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/

Proscan 40LC45Q... | Answered on Aug 29, 2014


Defectivce ABL [Automatic Brightness Limiter] problem can cause this.

Proscan 40LC45Q... | Answered on Oct 21, 2013


A/D board [Analogue to Digital] might have to be replaced. For more details, just type in the site name "Electro-help" to your search engines' search box [not in the address bar of your browser], and click search. It is an electronic equipments service help site.

All details you want are there. Note the position of hyphen in between words in site name, when you type it in. The site will appear as it is in web; subtitled as Service help to electronic home entertainment equipments.

Pull up older posts. You can get all details.


You can locate it either at the bottom part of first search page, or at the top of second page. Detailed descriptions are there to help you.

Sometimes, clicking on advertisements by the side and bottom of each post might help you to get details about the availability of spare parts; price etc:-

Proscan 40LC45Q... | Answered on Jun 05, 2012


Plasma and LCD TV sets are prone to having capacitors in the power supply section fail. This is the most likely cause for the probem you describe. When capacitors fail your will commonly see one or more of the following symptoms.
  • No video, Power light is on or blinking.
  • TV is making a clicking noise.
  • TV takes a while to come on
  • Screen is very dim or flickers.

Again, You can get a power supply repair kit with the parts, detailed instructions, and support from sites such as www.TvRepairKits.com . Or just click here to see more details on their kit.

Here are pictures of capacitors...Notice that the ones below look bloated. They have failed and will need to be repalced.



ecollier2012.jpg
Capacitor being replaced! Fairly easy DIY fix.

ecollier2012_0.jpg
Again, You can get a power supply repair kit with the parts, detailed instructions, and support from sites such as www.TvRepairKits.com . Or just click here to see more details on their kit.

Proscan 40LC45Q... | Answered on May 04, 2011


Check the resolution on your signal source. Well, first before doing that make sure the Proscan is on the right input i.e. make sure it is on the hdmi input if you have it and you signal source connected with an hdmi cable and then make sure the resolution on the signal source is 1080i fixed. Then there should be a button on the signal source remote (# hdzoom or format or aspect). You should be able to change the picture size with the #hdzoom, format , or aspect button.

Proscan 40LC45Q... | Answered on Feb 03, 2011


The whining noise originates from the backlight inverter board of the tv. I would like you to take off the back cover and have look to confirm and let me know.

Sai.

Proscan 40LC45Q... | Answered on Dec 27, 2010


Check the sleep timer and see if it's selected? Does it turn off at the same time every time?

Proscan 40LC45Q... | Answered on Dec 16, 2010


I had a similar problem with my 42 in Philips LCD HDTV.


Here was the problem. My Power Supply Board had several bad capacitors. I opened my TV (warranty was expired of course) and found four bulged capacitors on the PSB. Many major electronics companies Philips/Magnavox, Sony, Panasonic, and others were sold capacitors that failed in 2-5 years instead of 10-20. The capacitors fail prematurely due to a lack of preservatives. Unfortunately, they were installed in all sorts of devices and cause a wide range of failure problems.


Here are some options for you.


1. Have it fixed by a professional $$$$$$$??????? (Is it under warranty?)


2. Open your TV and find PSB. (The board that the power cord plugs into) Check for faulty caps. If you find some (bulged or leaking) bad caps replace the entire board. The entire board costs around $250 right now because they are in high demand right now. They can be found at tv-part.com but supplies are limited. I would definitely shop around though.


3. Remove and then replace individual faulty caps. This takes some soldering skill.

Caps are inexpensive and if you can take care of it yourself it will save you hundreds.


This may be your problem. If you determine that it might be.

I have a Tip/How TO tutorial on this site that may also help. It gives step by step instructions for replacing caps on PSB #715t2432-2. If this is your board you are in luck. Here is the Link: Fixing the Philips Turns/shuts off on its own problem. I'm working on uploading pictures to help guide people though the process as well. Let me know if I can do anything to help.


Hope this helps and if it does please rate it accordingly. Good luck.

Proscan 40LC45Q... | Answered on Dec 14, 2010


This could be a lot of things.. You did not post the model number of the television but you may have interference from other devices in the home and it the remote is not infrared then you may have stray radio waves causing problems.

Proscan... | Answered Yesterday


Open internal fuse or power supply failure

Proscan... | Answered on Dec 18, 2019


  • Failing power supply
  • Defective power switch

Proscan... | Answered on Dec 06, 2019


go into picture set up and change to right side up

Proscan... | Answered on Nov 29, 2019


Proscan DVD Codes = 2118, 2144, 2205, 2319. Proscan VCR Codes = 3000. ON MOST REMOTES: 1. Turn on the TV. 2. Press and hold the TV and SEL buttons simultaneously for 3 seconds. The button will light. 3. With the button lit, point the remote at the TV and enter the TV's 3, 4, or 5 digit code.

Proscan... | Answered on Nov 05, 2019

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