Question about Sanyo 42 in. LCD TV

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Sanyo 42inch flat screen Model#DP42840 power board ticking suggest how to solve problem

Tv dead making clicking sound

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: 42inch sanyo vizon flat screen tv bought 18 months

2000 $ ???

Posted on Mar 05, 2009

  • 188 Answers

SOURCE: Sanyo flat screen broken

Check back light inverter.

Posted on Jul 20, 2009

  • 132 Answers

SOURCE: My sanyo dp42840 flat screen

The first thing I would check would be the electrolytic capacitors on the power supply board. If any of them are swollen or domed on top rather than flat, they will need to be replaced and that will fix your problem. I fix about 75% of them at the shop by replacing caps on power supply. A tech will probably charge around $100 if it is bad caps. It is a fairly easy job.

Posted on Jul 31, 2010

  • 6 Answers

SOURCE: my sanyo plasma flat screen tv will not come on....

For what it's worth, you can download the official Sanyo repair manual for this TV (DP42746) at http://www.eserviceinfo.com/downloadsm/43343/sanyo_dp42746.html. I uploaded it here when I had some issues with this TV last year. The solution almost always seems to be to replace the Power Board and the Upper and Lower Y Buffers. The parts and costs (from Sanyo in July 2009) are listed below (NOTE: Sanyo will not ship these parts to anyone but a repair shop):
1. V4 Y-Main (Y-Sustain) Circuit Board (Part # LJ92-01200A, Alt Part # LJ41-02759A) - USD $139.00
2. Upper Y-Buffer Circuit Board (Part # LJ92-01202A, Alt Part # LJ41-02760) - USD $64.00
3. Lower Y-Buffer Circuit Board (Part # LJ92-01203A, Alt Part # LJ41-02761A) - USD $64.00
Sanyo charges USD $10.50 for shipping, which brings the total cost for parts to USD $277.50. From my research, a shop would probably charge between USD $500 and $700 to do this repair. FYI - there is a class action lawsuit pending against Sanyo for this issue. The V4 Y-Main (Y-Sustain) Circuit Boards fail VERY frequently in this TV due to overheating. Hope this helps.

Posted on Aug 07, 2010

budmrtn
  • 11361 Answers

SOURCE: my flat screen sanyo tv screen wont turn on. the

Try disconnecting the connector KBL on the main board as shown in my picture #DSCF0585 to see if the backlights will come on, if it does, the main board is bad.
Also check the voltages on the output connectors of the power supply.
http://s807.photobucket.com/albums/yy352/budm/SANYO%20TV%20DP26649/

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
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 and long life rating such as PANASONIC FM or FC series.
Please post back what you find.

Posted on Dec 24, 2010

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1 Answer

What else should I check on my Sanyo DP42840?


This could be the tuner overheating and sending a signal from the tuner board CPU to the power board to instruct the tuner to turn off. Check that there is adequate ventilation in the TV. Try testing with a fan to see if that changes the behaviour of the loop that you get.

Aug 31, 2014 | Sanyo Televison & Video

3 Answers

My 46" sanyo lcd tv screen was all black on the right side and got to where it shut off now it wont even come on


Specifying the model - and in case of Sanyo TVs the chasis - is critical for faster and proper diagnostics of such problems.

Here are a few points of reference, neither of which covers nearly completely the very wide Sanyo TVs line:

http://blog.coppelltvrepair.com/2012/07/sanyo-dp47460-dp42840-dp46819-and.html

http://www.coppelltvrepair.com/productag/19/sanyo


Good luck!

Sep 04, 2012 | Sanyo DP46848 LCD TV

1 Answer

Turned on tv, few seconds it clicks off, after a few times, it won't click on anymore for awhile


Check
http://blog.coppelltvrepair.com/2012/07/sanyo-dp47460-dp42840-dp46819-and.html


You will want to check what is the model of your Sanyo, then contact Coppell TV Repair and ask if we fix the main board for this model - chances are good we do.

Prices are between $65 and $85 total as of September 2012 and you start by going to www.coppelltvrepair.com and following the "Shipping instructions" link.

But before any of that check with us if we service your particular TV model because Sanyo has lots of them and we don't do all just yet.

Aug 27, 2012 | Sanyo 42 in. LCD TV

2 Answers

Sanyo DP42840 HDTV LCD wont come on.


Check and replace its power supply regulator board. Seek tech support.

Jun 01, 2012 | Sanyo Televison & Video

1 Answer

Sanyo dp42840 42/46 in color tv have no sound or pic


No picture or sound means the main circuit board has failed, in most cases the boards are not repaired but replaced, this is a very expensive repair and so the option of replacing the TV comes into play, factors that affect the decision to repair or replace are the age of the TV, more than 6 years old replace it, less than 5 repair it. The average life of today's flat panel big screens is at best 8-9 years.

Dec 15, 2011 | Sanyo Cameras

1 Answer

I own a sanyo "26


Tv now have it on green LED power on for good and tv flashes of pictures only for few min,than dies and have sound left only?Yes,take the tv aparts.U have all the tools and understanding basic electronic also can do basic soldering work too?Check the tv power supply board,that the board where the power a/c cord plug into it.Check the tv power supply board carefully for dead and dying components parts call capacitors.These dying and dead capacitors parts most likely all of the times,will bulges up or puffing up onto it tops.Changes all these dying and dead capacitors parts components,will solved this problems 70% of the times.If the tv power supply board it is good and no dying or dead capacitors component at all.Than the tv a long board that call the LCD inverter board it is dead.This LCD inverter long board are to helping the LCD screen panel to have a backlight to produced a picture.The tv long LCD inverter board have no parts for sale indivitually,al way have to buy a refurbish whole long LCD inverter board for the replacement.Also if you have no tools and soldering skills to fixed the power supply board by replacing capacitors component parts indivitually too.Tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish power supply board or a long LCD inverter board for the replacement.

May 28, 2011 | Sanyo DP26649 26 in. TV

2 Answers

My sanyo dp42840 flat screen turns off by itself after 5 minutes...what do I do?


The first thing I would check would be the electrolytic capacitors on the power supply board. If any of them are swollen or domed on top rather than flat, they will need to be replaced and that will fix your problem. I fix about 75% of them at the shop by replacing caps on power supply. A tech will probably charge around $100 if it is bad caps. It is a fairly easy job.

Jul 31, 2010 | Sanyo DP42848 LCD TV

3 Answers

Sanyo DP52449, tv getting power but no display


When DP52449 (chassis 01 - that is important!) does not power on and the front LED flashes every 15-20 seconds you have a faulty main board, which you need to replace or get serviced.

We presently do not offer replacement boards, but we do offer repair services for them at
http://www.coppelltvrepair.com/p/59/sanyo-dp52449-p52449-01-main-board-n7ke-repair-service


You may also be curious to read the article we wrote back in July 2012 on a problem that sounds exactly like yours and which lead to the service offerring:
http://blog.coppelltvrepair.com/2012/07/sanyo-dp47460-dp42840-dp46819-and.html

Hope this helps!

Feb 20, 2010 | Sanyo DP32746 32 in. LCD Television

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