Question about Toshiba 40SL412U LCD TV

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My toshiba 40sl412u turns on for a second then off

I have unplugged TV to solve problem but still does the same ill press the power on and green light turns on then a small dim flash and turns off.

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  • 16 Answers

You more than likely have faulty capacitors on the power board. the caps won't let the power build up.

the general steps are

  1. unplug your tv.
  2. lay it glass side down on a soft thick blanket to protect the glass.
  3. remove the rear panel.
  4. identify the board with the power connector.
  5. remove it.
  6. find replacements for the electrolytic caps, the cylinders looking ones.
  7. unsoldier, then resoldier the caps.
  8. put the TV back together
This will generally cost $10 for the caps and less than $50 for the soldiering equipment. You tube has a vast number of videos on this.

a tv repair shop locally should cost less than $100. should be even less if you remove the board and bring it to them. there are companies that you can send the board in and they will repair and send it back.

Mind you $100 is cheep VS a new tv. I replaced the caps in mine for 10 bucks and a few hours of time, but I'm a highly qualified electronics repair tech.

Posted on Feb 09, 2014

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SOURCE: Flashing power button tv won't turn on

yes call the tech and have the power board replaced. In future have the TV plugged into an anti surge board to protect it ( and you from expensive repair.) I suspect you will need a new power supply fitted

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Power board require changing.It dead.

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Hi,
TV needs back light inverter board replacement as discussed in chat session, required board is available with shopjimmy.com
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Hello,

My LOEWE CAL 232 will not power up. When the power button is pressed, the monitor turns on, with the LOEWE on the monitor, then the TV continues with the previous activity (antenna, DVD, VCR etc.). Now all that happens is

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Notes from user manual: http://www.tacp.toshiba.com/tacpassets-images/models/37av502r/docs/37av502r_om_e.pdf

Unplug the TV for about an hour to see if it will reset itself, if not, try:

TV stops responding to controls:
If the TV stops responding to the controls on the remote
control or TV control panel and you cannot turn off the
TV, press and hold the POWER button on the TV control
panel for 5 or more seconds to reset the TV.

Reset Factory Defaults
To reset all settings and channels to their factory
default values:
Press and open the Setup menu.
Highlight Installation and press . A new set of
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Open the System Status menu, highlight System
Information
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Press tu to scroll through the menu bar to select
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Enter your PIN code (or 0000 if no PIN code has been set).
Highlight Yes and press . The TV will turn off
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To cancel the reset:
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Otherwise you may jhave bigger problem inside the TV.

If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on:

Please see my basic troubleshooting guide here:
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http://s807.photobucket.com/home/budm/allalbums

http://en.wikipedia.org/wiki/Capacitor_plague

Parts: www.shopjimmy.com

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