Question about Proscan 32LB30QD 32 in. LCD TV

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Connecting the inverter

What connector goes to what! looking a 4

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Just try to download the repair manual to this TV by internet. It has all details.

Posted on Jul 22, 2013

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Posted on Jan 02, 2017

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Hey Guru- got a question about a Sanyo DP37647. The backlight flickers 1 time when I turn it on and then goes to black, with no backlight. I do get audio. if I turn it off and on a few times, i can get a...


You are right ,the problem is in the backlight. There's a loose connection in the connector of the backlight to inverter or driver.The backlight have high voltage supply,so if the coonector is mildly loosen,it may cause of voltage drop produce and spark and over heat the connector,and totally result of loose connection.So the things you can do to fix the problem ischeck the connection of the backlight.Open the back cover and look the board,located at the center part.It has a metal cover in the board,remove the cover and check the connector of the backlight,Resolder and tightly press the connector to the inverter or driver.It is usually happen to the backlight of the LCD TV.Just fix the connection of the backlight.Try my suggestion and procedure,.Hope it will help you..Thanks..

Aug 29, 2011 | Televison & Video

1 Answer

The screen goes black, but the TV is still on, and the audio is still working.


open the back cover of your tv...and look for the power supply..the inverter is connected to the power supply via 24volts supply..solder the supply terminal.and push the connector of the inverter supply to its socket...perfectly!next check wheter your backlight lamp are busted replace busted lamps.this lamps illuminate the screen of your monitor.


hope this could help you good luck!
your rate is important to this post pls.

May 21, 2010 | Televison & Video

1 Answer

My dell laptop lcd splashes the OS and then goes dark. It works fine with an external monitor. I have a feeling that there is a loose connection since the top is almost falling off


Think you have answered your own problem here. If the external screen is ok, then the fault lies with the laptop screen.
Solutions..
1.) Remove keyboard top cover (download a "how to" guide if not familar with doing this)
2.) Remove screen bezel
3.) Check the inverter connections (inverter looks like a thin tube)
4.) Check cabling from motherboard to monitor /inverter for signs of fraying, tears, bare wires
5.) Check connections of the cable for damage.
If the above are ok, then you may have a damaged inverter. In any event, i'd look to repairing the damage to the loose lid, as its putting a strain on the wiring

Feb 09, 2010 | Dell Inspiron™ E1505 PC Notebook

1 Answer

My laptop is only 4 months old and my screen is very dark. I can hardly read the screen.


The connector that goes from the mother board or the invertor may be bad. Or the inverter board itself.
The wire is very delicate and goes from the motherboard and the invertor wire is also delicate. Repeated opens and closing of the screen can make the conections at the plug get weak and break.
Try connecting a LCD monitor alongside the laptop. Select the LCD and see if you get a video feed. If so then the wire connector and / or inverter is probably the sourse of your problems.

Sep 13, 2009 | Toshiba Computers & Internet

2 Answers

After replacing my broken screen on a Acer Aspire 3610 15.4 I have no display ,only back light on the screen, It will come up on a cpu to the opening screen then blank . I have the origional cables to the...


If you get a normal ACER screen boot then it goes dim, then your inverter is probably bad.

Just swap the inverter and you should be back in business.


Mar 02, 2009 | Acer Aspire 3610 Notebook

2 Answers

I turn on my computer but the screen is still black


think you might have a failed screen inverter (FL inverter); this problem is very common with laptops. The inverter board acts as a power supply for the LCD screen backlight bulb, it converts low voltage DC power into high voltage AC. On most laptops the inverter board is located inside the display assembly below the LCD screen and you can get access to it if you remove the screen bezel (LCD mask). When the screen inverter goes bad the backlight will not turn on anymore or it turns on for a short time and then goes off, but you still can see a faint image on the screen and the external monitor works just fine. First of all I would make sure it’s not just a loose connection and reseat connectors on the inverter (it looks like you already done this part). Next, I would try replacing the inverter board. It might fix your problem with the backlight. It’s possible that you have a faulty cable, bad motherboard or even bad LCD screen, but I would try replacing the screen inverter first.

Oct 06, 2008 | Toshiba Satellite Pro 4600 Notebook

2 Answers

Dell E193FPC


Looks like your inverter board is broken.

Similar problem as Neovo F-417 (same chassis) , Look for 715L1283-4 inverter board

Try http://lcdpartsandrepair.com/e193fpc-inverter-power.html

Jun 26, 2008 | Dell E193FPC 19" TFT LCD Flat Panel...

1 Answer

Blackout problem


Normal problem is dry solder of Inverter transformer and/or transistors around it .
If you can see the backlight ,white 2pin connectors connect to invertor pCB.Look around these two connectors you should see 2 brown/yellow/red transformers with a ferrite core.These are the inverter transformers , resolder all pins and power transistors around it.
That should solve your proble.
Please provide feedback and rate this solution.
Samir.

Mar 28, 2008 | HP Pavilion F1503 15" LCD Flat Panel...

3 Answers

NEC Monitor LCD1700V


I had a similar problem with a NEC LCD1935, and I traced it to the inverter board which was a Lien Chang LI-2190 ... it seems that common problems with this type of board are bad solder joints due to the temp. cycling, or blown capacitors, but I was too lazy to resolder everything so I just disconnected the BL signal line that goes between the main board and the inverter board, and this solved the problem. In my display it was a green line, marked BL on the inverter board -- I removed it from the connector and just taped it off.  I'm guessing that this is a blanking signal that the invertor uses to signal to the main board there is an overcurrent situation and that the display should be blanked/shutdown.
I'm certain that there are still problems with the inverter and it might go again, but at least I have a working monitor for the time being.
Caveat emptor.

Oct 26, 2007 | NEC AccuSync LCD71VM 17" LCD Monitor

1 Answer

Monitor goes black


If you can see the backlight ,white 2pin connectors connect to invertor pCB.Look around these two connectors you should see 2 brown/yellow/red transformers with a ferrite core.These are the inverter transformers , resolder all pins and power transistors around it.
That should solve your proble.
Please provide feedback and rate this solution.
Samir.

Aug 30, 2007 | HP Pavilion F1503 15" LCD Flat Panel...

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