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Iverter not working

Display is blank and inverter no longer working. 240volt supply is at inverter.

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Sl300 dim

If it is an LCD, there is a back light. That is usually fluorescent so there is an inverter. If it is an LED display, there is no back light as such so no inverter.
All the service manual recommends is to change the DC-DC converter board, followed by the System Board, if that doesn't work the complete display unit.
Helpful blighters at IBM ... not!

Nov 19, 2013 | Lenovo ThinkPad SL300 Notebook - 27384EU

1 Answer

Toshiba m60-104 screen dark new screen new iverter

Have you tried an external monitor?

Plug in an external monitor and see if the display shows up on it. It can be any kind of monitor even the old big fat crt monitors as long as it has a vga cable to connect to your computer's vga port. If the display shows on the external monitor that proves your video card is ok and your lcd screen is the issue. The video will show on most systems when you reboot without you having to do anything. Some systems will require you to hit the FN (Function key) + F1 thru F12. Hold down the FN key then hit the correct key for displaying on the monitor (F1 thru F12). The correct key will normally have CRT/LCD on it or it will have the icon of a display.

If is shows on the external monitor, then you would have to question if the new screen and lcd inverter is bad. Just because they are new don't mean they work. Are you sure you purchased the lcd screen and inverter that is for your model?

May 23, 2012 | Toshiba Satellite M60 Notebook

2 Answers

V7 S20PD monitor goes blank after 1 second!

This is usually caused by one of the inverter transformers that drive the backlights, or the backlight itself. The capacitors should not be ruled out, to fix it will be expensive venture.

May 16, 2012 | V7 Computers & Internet

2 Answers

The screen has gone blank but the sound is alright.


Problem is in either power supply or the Y-Sustain board.

The Y-Sustain is a relatively large board out of which go connections to the side of the display; it's therefore closer to either the left or the right side of the display, has at least one rather large heat sink on it and fat power cables connecting it to the main power supply.

Often there are fuses on that board - one or more.

if they are blown you can try to replace them, but expect them to blow again - usually the whole board needs to be replaced.

Hope this will help in solving the problem.....

Aug 08, 2011 | LG 19LH20 19 in. LCD HDTV

1 Answer

My s10e lenovo is on but there is no display please guide me what is the solution of it. all lights are on but display is totally blank

Try attaching an external monitor to the laptop & see if you could get any display on it. If this is successful, then you might have either a faulty LCD cable or screen inverter board.
The LCD cable transfers data signal from the motherboard & video card to the LCD screen. It also supplies high voltage DC power to the screen inverter board. The screen inverter board works as a power supply for the backlight lamp mounted inside the LCD screen. It converts low voltage DC power to high voltage AC power needed for the backlight lamp.

Sep 16, 2010 | Lenovo IdeaPad S10e Notebook

1 Answer

Toshiba P10 laptop screen no longer works.

It's not the inverter but the biotin backlight bulb that lights the display from underneath. The screen needs to be replaced unless you want to try and rebuild it and replace the backlight bulb. New screens from EBay should not be more than 70-100 bucks. If you want to try and replace the backlight bulb, the link is below for the procedure.....

Nov 03, 2009 | Toshiba Satellite LP154W01 Notebook

1 Answer

I turn power on and green light on front comes on and then goes off and no picture

Do you get sound? I f you do, then it can either the backlight iverter board (blown surface mounted fuses) is bad or the powrsupply that supply the power to the inverter board is bad.

Oct 29, 2009 | LG 42LC2D 42 in. LCD HDTV

4 Answers

Viewsonic Optiquest Q19 blanks out - just a year old

Sounds like the LCD panel inverter is going out, if not gone out completely.

Jul 18, 2009 | ViewSonic Optiquest Q19wb LCD Monitor

4 Answers

Sceptre LCD - no display

I have same problem... just went off warranty and they won't cover it.. they want $100 for repair plus $35 shipping plus I have to pay to ship it to them... For $179 I can buy a new 19" with 3 year warranty...I wouldn't buy another Sceptre at half the price

Jul 13, 2008 | Sceptre X9G Komodo IV 19" Flat Panel LCD...

1 Answer

Lcd dv3250 not working

the fact that you have on screen display tells me that you are on a blank digital channel, or input with no signal. check to see if this is so on all of your inputs DVD, VCR, Cable, Sat box... if there is no signal still, replace the scaler board.
here's the four basic components to a LCD tv.
1. panel. there is on board electronic inside not componet level repaired.
2. power supply. this feeds power to the unit 5V, 24V, and 15V. the 5V is the standby voltage while the 24V supply the inverters.
3. the inverters. this is a DC to DC inverer used to light the lamp. these and not component level repaired.
4. the scaler board. this is the board that runs the show. it sends the signal to the panel to paint the picture.also sends commands to the power supply to turn on the inverters. this board is definatly not component level repaired. most all of the boards can not be repaired at the component level, power supply may be the only one, but not all power supplies can be.
there is one other part to the set that does have failures and that is the cable connecting the panel to the scaler. this is the LVDS cable. sometimes just reseting the cable can solve many problems.
so based on this info your panel is working because you have onscreen display. your iverters are working because without the lamps you would not see the on screen. your power supply is working because you have inverters working. and the only thing left is the scaler this provides the on screen so we know that it is at least partly working.

Jan 19, 2008 | Televison & Video

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