Question about Toshiba REGZA 47WL68 47 in. LCD TV
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Posted on Jan 02, 2017
Ur Tuner board have problems,it dying.Tries websites like Shopjimmy.com,Ebay.com to buy a refurbish Tuner board for the replacement.
Posted on Apr 22, 2010
SOURCE: no backlights
The T-Con board is dead.This board sit right in the middle in the bottom of the LCD screen panel.This board is dead,require replacement.Tries websites like Shopjimmy.com,Ebay.com to buy a refurbish T-Con board for the replacement.
Posted on May 24, 2010
Three possible causes:
Power supply module with poor DC filter caps, Bad T-CON board, Backlight inverter board. Those are the assemblies to check.
Posted on Jun 15, 2010
Testimonial: "NICE. thanks for giving the options to check. "
SOURCE: i have a d:4742m 47
No pictures can be due to no 24vdc for the backlight, bad T-CON board (have backlghts but no pictures).
Please try below first:
First, look at the screen in darkened room to see if you can see any slight glow from the screen, if it does, then the problem can be the T-CON (not getting the 12vdc) or the main logic board not feeding the signals to the T-CON board.
if not, next place to check will be the power supply module, make sure it has 24vdc which is required by the backlight inverter to work, the reason for not having 24vdc can be from bad DC filter caps (leaking/bulging top, high ESR) or short circuits in the inverter board which will cause the 24vdc supply to go into shutdown mode, so you may have to disconnect the power cable that feed the inverter board to see if the 24vdc will work without the inverter board hookup, you will need to apply about 3~4 amp of load to the 24vdc to make sure it can handle that. There are fuses on the backlight inverter boards also. So there is some troubleshooting you will have to do to find out the causes of the problem you are having.
If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on:
Basic LCD monitor and TV troubleshooting guide:
Failed TV and Monitors: http://s807.photobucket.com/albums/yy352/budm
Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague
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 and long life rating such as PANASONIC FM or FC series.
Please post back what you find.
Posted on Dec 28, 2010
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