Question about Sanyo DP46849 46 in. HDTV

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Got a Sanyo DP46849 LCD flat screen. After less than a year it all of a sudden went black. Power light comes on but blinks every minute or so. Nothing on screen whatsoever I have heard two possibilities. That it's a power unit failure and I have to get a TV repair shop to fix it, at my expense. Or it's just an update and they will send me a USB flash drive that plugs directly into the TV and fixes the issue. Your advice?

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  • Sanyo Master
  • 13,433 Answers

Hello

Unless the loss of picture was a result of a firmware upgrade on the TV, from a USB stick? then It would be a hardware problem, if the issue came up after a firmware update, then the update may have failed and it would need to be re-done.

IF the tv went out on its own the issue is most likely internal hardware, possibly the power board, but can't say for certainty what the issue will be.

It is sad that in our current money driven system/economy, manufacturers will and can not produce products that would be made to last longer than a year or two, we do have the technology to create such high quality products that would last a decade without repairs, but it will not happen in this money driven system where the products must eventually (possibly right at the end of the warranty) fail in order to keep money in circulation and the manufacturers in business.

Posted on May 13, 2010

  • cameron9 May 13, 2010

    There was no firmware change or update. It just doesn't have a picture on the screen for no reason suddenly. Just black. Looking all over the internet it seems to be a major problem on this model. And in most cases in requires a TV repair shop to order a power component that they can't get!



    If that's the case I will make it my mission to boycott and bad mouth Sanyo and Walmart. I can't believe there is not a class action lawsuit pending at this point.

  • jerry emmons Dec 02, 2010

    Look for ebc electronics

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1 Answer

Sanyo dp46849


It sounds that there is some loose contact with the connection wires between its LCD control panel circuit board [T'Con] and LCD panel. Re-seat them once and check. If you wish to get more details, check this site. Pull up older posts there. Check the site with patience, as it has over 2350 posts now. All are related to electronic equipment repair help. Screenshots of faulty screens and reasons are given in detail.

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Why my 42" sanyo DP42841 HDTV LCD SCREEN GOES BLACK ON THE LEFT SIDE?


That sounds like a faulty LCD panel tab. The only true fix is to replace the screen. This usually isn't cost effective.

Jan 19, 2013 | Sanyo DP46849 46 in. HDTV

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My 26" LCD HD tv


The tv have an intermittent shutdown,ur tv causes are by the board that called the main logic Tuner signal board.That the board where the tv incomming broadcasting signal cable wire plug into it.This tv it is under a year old,ur tv still under warrenty.Call Sanyo tv Corporation.Take ur tv warrenty repair or tries take the tv back where u bought it.Tries trade it in for another one.

Sep 20, 2011 | Sanyo DP46849 46 in. HDTV

1 Answer

I have a 46" Sanyo


In most cases the standby light might blink with different rapidity to indicate a fault relevant to the processor. It is possible that most of these indicate that there are errors in the processing section . Since there is a possible short or leak in the circuit the output driver section can take in huge current to trip the SMPS or from advice from the micro processor. Remove the power plugs and make sure that high voltage sections are discharged of the potential stored in capacitors. Look for visible signs of leak or of busted capacitors. Look for bulged capacitors or damaged components- burnt or busted. Use a multimeter to check the continuity or shorting in components, if so detach from circuit and test . If the voltage builds up and the set power ON and then shuts up then the suspected section must be checked in detail.

The processor must have the +5 voltage to the function properly , the +B and secondary voltages also must be checked to infer the fault. Trace with caution and in running through the signal path , circuit trail.

Jul 08, 2011 | Sanyo DP46849 46 in. HDTV

1 Answer

DP42647 On half of our 47 inch screen it is black and distorted when we first turn the TV on but after 30 or 40 minutes it finally just lights up and is fine.


Tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish board that call the T-CON board for the replacement.This board sit in the middle at the bottom of the LCD screen panel.This T-CON board only job are to decodering picture pixels dots only before it show up to the LCD screen panel.

Jun 10, 2011 | Sanyo DP46849 46 in. HDTV

1 Answer

DP46849 has black screen with power light on. Dish network is working as remote tv is operational. Pushing any button on either DISH or Sanyo remote causes power light to blink. No sound. Power light...


It may be in safety shut down mode due to shorted circuits or power supply failure due to such thing as bad DC filter caps. You will need to do in-depth troubleshooting.
See www.shopjimmy.com if he has the picture of the boards.
Please read my guides also.
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:
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 pictures: 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 and long life rating such as PANASONIC FM or FC series.

Mar 23, 2011 | Sanyo DP46849 46 in. HDTV

1 Answer

My new Sanyo HDTV LCD won't come on, although the on light is on.


If your Tv is in warranty or you have a cover plan, you need to return the Tv for repair or replacement.Your Tv sounds like it has a power supply fault.

Feb 28, 2010 | Sanyo DP46849 46 in. HDTV

1 Answer

My 46-inch Samsung LCD TV screen went black. Audio works.


If you are seeing light then the back light is working. Can you get a menu?Do any of the other video inputs work? If no video but has backlight and no men or any on screen display replace main board.

Sep 13, 2009 | Televison & Video

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