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Re: Black screen no picture
Your inverter has died and is a very common fault with all LCD monitors. The inverter powers the lights that sit behind the screen so you can see what is happening. So no lights, no picture.
Shining a bright torch at an angle from the top you will be able to see the image on screen, but very feintly.
This is something your local TV repair shop will be able to take care of fairly cheaply. It's not a good idea to play around in these types of monitors unless you have some understanding of what lay ahead.
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Sometime this will happen when the Dell machine is stuck in sleep mode. Press and hold to power button for about 10 seconds. You should see the fan spin just a little this tells you that sleep mode is off. now try starting the computer like normal.
candlelig840, Your "cold-cathode-fluorescent-lamp" back-lit lcd monitor may not be in sleep-mode!! However, it may be in "black screen" or "Blank n Black screen" mode. Spend an hour doing some reading in my fixya profile and read testimonials and follow the web links. Your monitor isn't any different than any other brand in it's basic design and operation!!! Again, read my and other LCD monitor tech's ("budmrtn" , "buddymc" ) for information on doing your own repair or to find out all your options you have when dealing with CCFL back-lit LCD panel that is now black and lifeless!! If you live in or near a large (>2 million) city, give a call to local TV/lcd repair shop and question them about black screen and what is the top cause of lcd monitor/ lcd tv black screen failures. If you need further assistance after you research your monitor's problem do another comment here on fixya and we will be glad to help you. Do not rate this response. If you do, you will break the link and not have option to do further comments back to this posting. 12fixlouie
mike_garzan, Your monitor will need some work done on it!! Do you know the "flashlight trick" that every owner of an LCD monitor with "cold cathode-fluorescent-lamps" should know how to do when the BLACK screen of death makes it presence known? Do this test first! It is a very easy test to do. 1. With a KNOWN GOOD pc fully booted to the WIN-desktop showing on a GOOD Monitor have a friend tap the CTRL key on the keyboard every 30 seconds or move the mouse to ensure that the pc won't go into sleep mode. 2. Power off the good monitor and disconnect it from the pc. Now reconnect the TTX9151 to the pc and wall outlet power. 3. Then and only then turn on the monitor and make note of what happens. Did you see or not see the WIN-desktop appear?
4. Now for the flashlight test. Even though the LCD panel appears BLACK, shine a bright flashlight about 1" from the screen's lower left corner and make note if you can see the Windows START icon even though the screen appears to be BLACK. 5. Turn off TTX9151 or yank the plug from wall outlet, and disconnect from pc. TEST IS DONE. Reconnect good monitor to pc to get back online. The test was to evaluate the current status of the "switch-mode-power-supply" and the CCFL inverter circuit DC source. If you could SEE something on the BLACK screen then you know that half of the SMPS is working and sourcing voltage (+5 or +3.3v) to power the vga/lcd interface board! It also means that the SMPS is not in FULL SHUTDOWN mode and only has a problem sourcing voltage(+12v to +18v) to the CCFL inverter circuit which generates 800v to 1200v ac to light-up the CCFL's that are hung across the rear of your LCD panel to produce the WHITE LIGHT needed to see what is on the screen. Now, if you didn't see the WIN-desktop, then the SMPS is probably in complete SHUTDOWN mode trying to save itself from a CATASTROPHIC, NONRECOVERABLE failure! (eg. smoke and fire) Put the TTX9151 in a safe place and get back to me with results of the TEST. lmistyrel and on aim.com or do a comment to your original post above on fixya and I'll give you advice as to what you need to do about getting it repaired or other actions/options you as a consumer/user of LCD displays have open to you. Bye for now. 12fixlouie
nice anecdote, fixing things from far is not easy, a t.v.-technician right in front of the actual screen could tell more- but they don't come for free, alas. hope that people's idea about problem solving lead up to you fixing a problem yourself - hey this here is for free - to sort wxperts, one needs feedback! thx alot
This is usually the inverter/power board failing. If it's under warranty, you should return for repair/replacement, if not, you can search for online the inverter/power supply board - it can be as expensive as finding a good clean used monitor, so many people choose to not go the repair route.