Question about Proscan Televison & Video

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I have a proscan 40" lcd tv and I'm getting sound, but a black screen. Anyone have an idea if I need the inverter board or the tcon board?

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  • Proscan Master
  • 681 Answers

Most probably Inverter board.

Posted on May 27, 2015

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Posted on Jan 02, 2017

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SOURCE: sound no picture, which component is tcon board? where all audio/video/cable/hdmi plug in to?

for bn94-00963b go and change your backlight inverter

Posted on Oct 05, 2008

  • 1 Answer

SOURCE: sound no picture, which component is tcon board? where all audio/video/cable/hdmi plug in to?

I have LNS4692D. Returned from vacation, turned tv on - no picture. Tried turning tv off for 4 hours- nothing. Symptoms are: tv is on - no picture , just sound; menu doesn't show, volume bar doesn't show;E.Saving is working - the backlight is changing from lighter to darker.
Found this website and ordered T-con, otherwise known as the LCD panel driver board, p/n# Bn8101286a ( thanks premtech) from partstore.com for $124. Part number BN81-01286A A/S T-CON Board.
Installation:
1.Remove plastic cover. There is an arrow for each screw that needs to be removed. Make sure to unscrew pins next to VGA port. I've spent some time trying to figure out what else is holding the plastic panel until I found this pins.
2. Remove big metal shield in the middle of tv that is covering main components. This shield is being held by small black screws all around it.
At this point you will see cover of T-CON. Here is the picture
http://www.avsforum.com/avs-vb/attachment.php?attachmentid=118863&d=1220531321 (thanks ldac9). Do not attempt to remove that cover yet. Proceed with a next step

3.Remove metal panel that holds main components. Locate big chrome screws that have arrows pointing to them and unscrew them. Remove 2 more screws on the bottom of the panel that holds it together with a box for cables. At this point the main panel will be lose
4. Carefully start lifting the panel. You will see that there are connectors going from components on the panel to components on the lower panel and T-CON. Carefully unplug these components and raise the main panel.
5. Remove 4 screws that holds T-CON cover. Pull the cover so that T-CON is completely exposed. The cover is connected by thin alluminum , don't hesitate to pull it , but don't rip it out.
6. Once T-CON is exposed you will see 2 red ribbons. I've spent some time to figure out how unplug those from old T-CON board. Here is the suggestion. Don't try to pull it out. All you need to do is to lift small plastic lever that is part of a connector. Then ribbon can be slided out. If not sure what to do, see how this is done on the new T-CON. It has a principle of buckle on airplain safety belts.
7. Remove old T-CON and install new you.
8. Follow reverse order.

I've never fixed TV before , but this was totally successful project.

Posted on Nov 19, 2008

  • 20 Answers

SOURCE: Proscan 40" LCD-Screen Freezes

They actually state that you have to unplug it and replug it in to fix this problem in the owners manual so it's not just a isolated issue. I to have this problem daily now and this is the 2nd set after returning the first one due to same reason.

Posted on Oct 12, 2009

  • 1779 Answers

SOURCE: 47inch toshiba lcd tv (HL167) black picture, but

Best to replace both at the same time . Yes they are easy if you can find the parts.

Posted on Dec 15, 2009

  • 1 Answer

SOURCE: I need the remote control code for Proscan tv with dvd player

Don't know if the 26" is the same as the 32, but 10019 works for the 32".

Posted on Jan 18, 2010

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1 Answer

Sony Bravia KDL-40EX500. Plugged in power and no backlight. No pic no sound. Could it be the power board or inverter board? How can I test these boards? Thanks.


SELF DIAGNOSIS FUNCTION
The units in this manual contain a self-diagnostic function. If an error occurs, the STANDBY LED will automatically begin to fl ash. The number
of times the LED fl ashes translates to a probable source of the problem. A defi nition of the STANDBY LED fl ash indicators is listed in the
instruction manual for the user's knowledge and reference. If an error symptom cannot be reproduced, the remote commander can be used to
review the failure occurrence data stored in memory to reveal past problems and how often these problems occur.
DIAGNOSTIC TEST INDICATORS
When an error occurs, the STANDBY LED will fl ash a set number of times to indicate the possible cause of the problem. If there is more than
one error, the LED will identify the fi rst of the problem areas.
Result for all of the following diagnostic items are displayed on screen.
If the screen displays a "0", no error has occurred .
Diagnostic Item
Description
Number of times Standby
LED blinks Possible Location
Main Power Error 2 G2HE/GD2 (Power) Board
Audio Error 3 A (Main) Board
Balancer 4
LCD Panel
Inverter Board (ETC-Inverter MT Board) for 32" & 40" Models
TCON Error
5
LCD Panel
TCON Control MT Board
HFR Error 5 LCD Panel
Backlight Error 6
LCD Panel
Inverter Board (ETC-Inverter MT Board) for 32" & 40" Models
Temperature Error 7 A (Main) Board

This should help you narrow it down. I am also attaching the service manual for you. https://files.acrobat.com/a/preview/16a56e45-a439-48bc-8770-21638f2bab68

Jul 04, 2016 | Sony Bravia Kdl-40ex500 Series 40-inch Lcd...

1 Answer

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/

Sep 20, 2014 | Proscan 40LC45S 40 in. LCD TV

1 Answer

Proscan 32LB30QD TURN ON SOUND BUT NO PICTURE


Sounds like a bad inverter thats what powers up the backlights so you can see the picture on the screen. usually its about 85% of the times the inverter if you have pefect audio and remote functions but a black screen in a LCD modeel TV. You can get the inverter board from www.tvrepairworld.com

Jan 12, 2013 | Proscan 32LA30Q Television

1 Answer

Black screen but sound works on bravia 40in. LCD


Without any error codes hard to say. I would check the power supply for any swollen caps and replace them. Start checking voltages. Check for voltages to the inverter boards. Unplug the tcon board and see if unit will power on. The main board gets a constant always on +5v from power board.When power button is press a turn on voltage is sent from main to power board. Unplug inverter boards and try to turn on. Inverter boards are just a high vol ballast the supply voltage to the florencent back lighting.

Nov 01, 2009 | Sony BRAVIA KDL-40S2010 40 in. LCD...

6 Answers

Comcast remote won't accept codes for Proscan TV


I had the same problem. I have the 40 inch Proscan and they supplied a remote control guide for comcast. It was only 4 digits and it did not work. I called Comcast and they did not know. I found it needed 5 digits so I added a 1 and it worked The code is 10178. Hope it works for you.

Jul 21, 2009 | Sylvania LC420SS8 LCD TV

1 Answer

Sony Bravia 46S2010 no picture only glows but, only sound on


sound like you had problem with the lcd display panel. The Tcon had problem that attack to the panel.

Mar 07, 2009 | Sony BRAVIA KDL-40S2000 40 in. LCD HDTV

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