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When I turn my monitor on it flash with the display for about a second then goes blank.

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Have the flyback looked at

Posted on Dec 07, 2008

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Lg 50pq6000 screen flashes on then goes blank


Might want to contact LG to see if there is a firmware/software upgrade for this issue as it sounds familiar to me.

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I turn on my KDF-55WF655 Sony TV. The green power light flashes about 10 seconds and then the picture fades in to full intensity for about 305 seconds then goes blank. The green power led flashes about...


Hi,
If lamp has not been replaced in tv in last 2-3 years, then replace the lamp as symptom shows that lamp has reached to end of its working life span and causing that problem.
Lamp is not dead or broke but weak so you get above said problem in tv.
Thanks.

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Stanby light flashes 5 times breif pause then flashes 5 times again


AKB circuit (automatic kine bias), the timer/standby indicator blinks for about 30 seconds then goes to the self-diagnosis function. Something is wrong with the video. Check video out, Q705, 732, 761 and other components on the C board, also check Q218, 219, 220 on the A board. In addition, unit could be in IK blanking, try turning up screen slightly.

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Just replaced the lamp worked 2x for 30 sec each, now nothing.


you need to make sure all screws are in and tight , and most important the cover on the back of the tv were you access the lamp that has to be on. There is a little blue plastic piece (the safety switch) if that is not engaged the tv will stay on fore a few seconds then turn off check it out.

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My tv goes blank with sound only.


tough call. from your decription it could be the tubes the pulsating. but if i had it in the shop i wwould first look at the convergence curcuit. the fact that the on screen display come up in colors inidcates convergence problems. you might have multiple component falure there. as for cost it could be diddicult to say. average repairs like this barring piture tube problem at my shop run 200 labor and about 150 parts. this is just for convergence cuircit rpair

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I have a JVC LT-32x38 that turns on and displays an image for a second but then goes blank and outputs sounds only.


Sometimes the picture goes out but the screen is still lit(backlight on), if totally dark like TV was turned off then check voltages in the power supply board(24v, 12v, 5v) if all ok replace the inverter.

May 27, 2009 | Projection Televisions

1 Answer

Power/Standby light blinks green then screen goes blank (off) for


I have a similar problem. Just found out a possible solution yesterday. I am waiting for my lamp but here's what you need to do if you have replaced your lamp. Go into self diagnostics mode: Switch of your TV via remote, you will see red standy by light. Now,on the remote press "Display"=>"Channel 5"=>"Volume Up"=>"Power Button". All these keys need to be pressed within 3 seconds. You will now enter the diagnostics mode. Press "Jump" on remote (bottom right) 3 times and then press "Channel 2" 9 times. The screen will display your current lamp hours used.

In order to reset your tv to factory settings and for the new bulb to work you must reset this timer or else your TV will assume you are still using the old bulb and will automatically kick in "over protection mode". So here's what you do once you do on the lamp hours display screen. Press the "Channel 3" button on the remote 3 times then "Mute" then "Press Enter" to reset the timer to zero. Your TV should now work as normal. And remember, whenever a part is replaced all factory settings must be reset to zero. To do this, follow "Display"=>"Channel 5"=>"Volume Up"=> "Power Up" to enter service mode. Finally, press "Channel 8" and then "Enter" to put the TV back to factory settings.

The above mentioned is usually performed by a service technician and they charge somewhere around $95 diagnostic fee. You just saved this charge. If you see flashing red lights count them when they flash in sequence. This is a code for the techs to tell them what is wrong. These flashing red lights sequentially flash from 0 to 10 times to identify a problem. Usually, when the bbulb goes bad the only thing that might need to be replaced would be a "lamp Driver" aka "Power Block Assembly" $116.25 online from Sony, or the ballast. Sometimes, if you do not have a video a Thermal FUse can go bad which only costs $4.80 for the KDF60-XS955 but the techs will charge you over $300. You can do this yourself if you can get your hands on a service manual.

Hope this info helps.

Good Luck to you all.

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1 Answer

Sony KDS-55A2020 picture goes blank then returns


This sounds like the ballast for the lamp is going. The ballast sparks the lamp, and if it starts to go, there's not enough current to keep the lamp sparked. Thus it starts to fail: it's the same principle as a fluorescent lamp fixture. Ballasts are available at any service depot, but they're fairly expensive, and perhaps prohibitively so; you may want to look at replacing the monitor itself.

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1 Answer

I have a panassonic 50" plazma tv, when using it as a pc monitor the screen goes blank how do i stop this, many thanks, patsy


Does the screen go blank after the computer has been sitting unused for a while or is it immediately blank and does not show a picture. If it goes blank after a while, look in your power settings under control panel on your computer and set the monitor cut off to NEVER, also check your screen saver settings. If it does not show a picture at all check the user manual of your TV to see the supported computer resolutions and then check under display settings on your computer to see if the resolution that you are using is compatible. Hope this helps.

Apr 02, 2008 | Projection Televisions

2 Answers

Hitachi 61UDX10B









[BRAND SPECIFIC][TOSHIBA][QUICK FIXES]
Flashing LED
<< Back to Quick Fixes Page
If your set all of a sudden won't come on, e.g., the screen is blank, but the LED on the under the screen next to the on/off switch keeps flashing, then there may be an internal fault on the set that needs to be reset.
To force the reset, try this:
  • Unplug the set and wait a few seconds
  • Replug and see if the video returns
Whenever the set senses an internal fault through its monitoring circuitry, it essentially shuts down the set. The flashing LED provides the indication that a fault has been detected. Removing power to the set resets the monitoring circuitry. When plugged back in, the circuitry again does a check of the system. If it finds that there truly is a problem, then the set is shut down and the LED will again flash.

Jan 22, 2008 | Hitachi 61UWX10B 61" Rear Projection...

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