20 Most Recent Proscan 42LA45H 42 in. LCD TV Questions & Answers


Most likely it's the power supply board that went out. (part of it still works is why you get the blue LED when you plug it in.)

If you decide to try to fix it yourself, BE CAREFUL! The power supply board has capacitors that can hold high voltages for many hours after the TV's been unplugged.The equivalent of sticking your finger in a light socket.

You'll need the part number off the power supply to get a replacement.

Proscan 42LA45H... | Answered on Nov 04, 2019


Is there power to the outlet? Check your circuit breakers!

Proscan 42LA45H... | Answered on Jan 26, 2019


Could of gotten voltage surge
Try anther outlet

Proscan 42LA45H... | Answered on Dec 05, 2017


Try another set to see if does the same - if so, then it is your box. If not it is the tv. If still under warranty have it fixed before the no sound becomes permanent.

Proscan 42LA45H... | Answered on Sep 16, 2017


I am sorry Sir, the display panel is bad. If you purchased it new, it should under factory's warranty. Please call Proscan for a warranty repair.

Proscan Customer Service:
1-800-968-9853 (US and Canada)

Proscan 42LA45H... | Answered on Jun 02, 2017


U check the power source like the power a/c outlet?Yes?Tries tv unplug,replug it back like about an hour later.The tv should resetting itself back to the tv factory setting,tv now should have power again.Not.The tv have a power supply board problems and the causes.That the board where the tv power a/c cord plug into it.Tries websites like Shopjimmy.com,Ebay.com to buy a whole new refurbish tv power supply board for the replacement.

Proscan 42LA45H... | Answered on Apr 23, 2017


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://electro-medical.blogspot.com/
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. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.

Proscan 42LA45H... | Answered on Mar 28, 2016


Check whether the audio is muted by accidental press at remote control button. Enter its sound menu, and check it. If muted, as you know there will be no audio output. If not muted, check the speaker/s. If found OK; check and replace the damaged component/s at its audio output section circuit board. If needy, 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. Surf the site with patience.
http://electronicshelponline.blogspot.com/

Proscan 42LA45H... | Answered on Dec 06, 2015


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/
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.

Proscan 42LA45H... | Answered on Oct 13, 2015


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/
Circuit diagrams of many popular brand TVs are given.

Proscan 42LA45H... | Answered on Sep 24, 2015


Run the scan. If that does not do it see if you can reset the electronics to default condition. Many sets have a reset switch or a combination of keys on remote to accomplish this. U might have to check on the web site if your manual makes no reference to either of these alternatives.

Proscan 42LA45H... | Answered on Aug 30, 2015


Hi Lisa,
It appears to be back light failure. Please consult a local TV Tech to fix it.

Proscan 42LA45H... | Answered on Aug 23, 2015


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/
Search the site by type in the brand name to your device, in the "Search box at the top right of the display window".

Proscan 42LA45H... | Answered on Aug 18, 2015


Reduce screen resolution when showing high res pictures.

Proscan 42LA45H... | Answered on Jun 08, 2015


Was a child playing with the remote? In Setup menu, check the Color level, is it all the way down?

Proscan 42LA45H... | Answered on Jun 02, 2015


Your screen is going out

Proscan 42LA45H... | Answered on Apr 14, 2015


Your universal remote has a code search feature you can use to search for an appropriate code for your Proscan TV. If a thorough search through all codes stored in the remote fails, you may have to try another universal remote.

Proscan 42LA45H... | Answered on Mar 07, 2015


Other than going to Thompson who is RCA/GE/Proscan you can Google the model number with base to see what is available.

Proscan 42LA45H... | Answered on Feb 25, 2015

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