Question about Standard (CRT) Televisions

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TV troubleshooting My TV has a power but can't initiate picture. All I can see in the monitor is black.

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  • little_sarna Sep 09, 2008

    The TV turns on, but the screen is black with a blue streak through the middle.

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2 Answers

Blown vertical output ic and also check few resistors on that circuit.

Posted on Oct 18, 2008

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Take to tv repair shop, unit has what we call vertical failure

Posted on Sep 09, 2008

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37" Toshiba TV (37av50u) no picture no sound?


Boards:
http://www.shopjimmy.com/catalogsearch/result/?q=TOSHIBA+37av50u

You need to check the DC output voltages on the power supply DC output connectors first.
http://assets.shopjimmy.com/media/catalog/product/cache/1/image/5e06319eda06f020e43594a9c230972d/f/s/fsp1884f05.jpg


Please read my guide to get some understanding.
Basic troubleshooting guide here:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors: http://s807.photobucket.com/albums/yy352/budm/
Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague
Parts: www.shopjimmy.com
Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps.
Or www.digikey.com just make sure to use caps with low ESR, 105c, high ripple current, long life rating such as PANASONIC FM or FC series.
Please leave rating if it helps.

Jan 17, 2011 | Toshiba Standard (CRT) Televisions

1 Answer

Watching tv when the picture went black and now the green on light flashes for 30 times and turns off


A green flashing light for this model of TV indicates that the lamp cover is open on the TV.
  1. Unplug the power cable to the TV.
  2. Remove the 2 retaining screws on the lamp cover with a Phillips type screwdriver.
  3. Remove the lamp door completely from the TV.
  4. Remove the two retaining screws on the lamp case.
  5. Lift up the fixed wire handle of the lamp.
  6. Pull out the handle slowly and remove the lamp case.
  7. Insert the new lamp gently into the correct position. Make sure it is inserted correctly.
  8. Using a manual Phillips screwdriver (Do Not use an electric screwdiver), tighten the screws you removed in
    step 3.
  9. Replace the lamp cover and tighten the cover screws.
  10. Plug in the power cord and turn on the TV. After the initial warmup period (which may take up to several
    seconds for full picture brightness), the TV should operate normally.
If any of the following conditions exist, turn off the TV, unplug the power cord, and repeat steps 1–9 to ensure that the lamp unit and lamp unit
door are installed correctly:
  • The lamp indicator flashes green.
  • No picture
  • Dark picture
  • TV will not turn on
If, after repeating steps 1–10, the problem still exists, call Customer Service at 1-800-631-3811.
Source

Aug 31, 2009 | Toshiba 44NHM84 44" TV

1 Answer

When initially turned on TV will alternat between picutre & black


When the tv goes to a black screen does the sound remain on? Also,if you listen carefully can you hear any arcing noises in the back of the tv?

Aug 03, 2009 | Sony FD Trinitron WEGA KV-34HS420 34" TV

1 Answer

I have a Dell 19" flat screen TV/Monitor that came with the computer and is my computer screen. While watching, the picture went black. We have determined that it is the TV/Monitor by hooking up another...


Try these :

1.) reinstall your operating sys .

2.) sounds like there is a short somwhere. is it under warranty?

3.) Check the plug-in for the external power pack. Mine did the same thing and it turned out to be an old and week connection at the plug... the contacts were not fully making.

Let me know if teh above are OK .. !

Mar 20, 2009 | Recoton Advent Advent Q1435A TV

1 Answer

TV cuts off while watching a show


There are most likely some components in the power supply and or scan circuits that have become thermo sensitive.

An experienced TV service man should be able to troubleshoot your set and fix it for you.

Jerry G.

Apr 19, 2008 | Jensen Q2749J 27" TV

2 Answers

Sony 36XBR450 power?


You will not be able to service this at home. Most of the time there are failures in the scan amplifiers and or the power supply that cause the fault you are describing.

Jerry G.

Apr 01, 2008 | Sony KV-36XBR450 36" TV

1 Answer

Sony KV-32FV15 TY


I have had my Sony KV-32FV15 for about 2 years now and nothing has ever gone wrong(even going through several moves.) I recently moved again and when I plugged in the TV, you can hear the sound perfectly but the screen just stays black. You can not even hear the squeal that the TV makes when comming on. Is there anything that I should initially look at to troubleshoot. I cannot afford at this time the $250 fee to repair my TV. I look forward to your input and hopefully I can get this TV working again.

Oct 24, 2007 | Sony KV-32FV15 32" TV

1 Answer

Problem to turn on Philips TV


sound very much like the C.R.T is low emission the tv monitors the tube before showing a picture.either get the tube boosted or changed most tv shops should do i

Oct 18, 2007 | Philips 27PT563S 27" TV

1 Answer

Blinking Stand By/Timer LED


You can try this on the remote in standby mode, meaning tv plugged in but set off. Press Display,5,vol+,power on remote.Press each button within a 1 sec interv. Next the CRT display the item being adjusted. Press 1or4 on remote to select item. 3or6 to change the data. Press Muting then Enter to write into memory. Service Reset muting green enter red. Press 8 then enter on remote to initialize. turn set off to exit. wait least 10 sec. before turning back on.

Sep 10, 2007 | Sony KV-32V40 32" TV

2 Answers

Picture and sound problem at 21" sony waga color tv


This is due to problem in deflection area and power supply section malfunction. Make one general service by technical person immediately to avoid major transformer failure problem. Since this is initial stage, the cost of repair is probably less.

Aug 28, 2007 | Sony FD Trinitron WEGA KV-24FS120 24" TV

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