Question about Sanyo DP32746 32 in. LCD Television

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Sanyo dp42849 has no picture but has power - Sanyo DP32746 32 in. LCD Television

Posted by Anonymous on

5 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

alpug
  • 1961 Answers

SOURCE: I have a Sanyo LCD

hi,doe sthe screen of your TV lights up?during power on?if not then there might be a problem on the inverter board and the backlight lamp of the monitor .The lamp is a cold cathode bulb it requires a high voltage supply from the inverter board in order to light up.just like any other bulb this lamp has a limited life span more or less 2 years of continues lit.The inverter board is a high voltage board the power input of this board is 24volts DC and the output is 200volts AC.The terminal input of this board or connectors must be check because of high voltage corrosion and loose connections always happen that leads to the mal function of the display or screen failure just like what happen to your TV.
Backlight lamp is installed at the top and bottom of the screen you need to open the back cover of your TV to check up the lamp.(make sure to unplug the TV before proceeding)..check first the test point that I mentioned then post back for your findings then will proceed to further trouble shooting...GOOD LUCK!

Posted on Jan 04, 2011

budmrtn
  • 11361 Answers

SOURCE: I HAVE A SANYO DP42849 LCD TELEVISION. I HEAR

It can be power supply, T-CON board, main board, bcaklights inverter board.
Try this 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:
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
Parts: www.interliquidparts.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

Posted on Jun 26, 2011

SOURCE: i have a sanyo dp42849. i turned it on this morning. the power light went on and i have no picture or sound

Sounds like a main board issue, but please have the set diagnosed properly. Be aware, some Sanyo main boards can be hard to find and costly !!!

Posted on Sep 07, 2012

kcgoat
  • 2 Answers

SOURCE: I need a sanyo dp42849 power supply circuit board.

if ordering a power supply board ,make sure that you order the exact matching number board ,requires removing the panel and writing the numbers down from old board ..there are at least 2 boards for the 42849 tv

Posted on Nov 25, 2012

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1 Answer

Sanyo DP42849 42 inch


Find your TV model in the list, compare with the symptoms you have and if there is a match send the board for repair:
http://www.coppelltvrepair.com/search?q=DP42849

Apr 18, 2013 | Sanyo DP42849 42 in. HDTV

1 Answer

DP42849 no picture but sound


if you don't have a picture but don't have sound, that could be a backlight problem. Take a bright flashlight, turn on the set and shine the light on the panel. If you see a faint image, you have a back light problem. If you don't see a faint image, then I suspect a bad scaler or t-con.

Dec 21, 2012 | Sanyo DP42849 42 in. HDTV

1 Answer

Sanyo DP42849 no picture but has sound


Sounds like an inverter problem. On some of these sets, the inverter and the power supply are on the same board. These boards tend to be quite pricey, $100 + range. I've worked on your particular model with the same problem, and it was a bad inverter/power supply board. I would recommend you get a diagnosis to be sure.

Oct 28, 2012 | Sanyo DP42849 42 in. HDTV

1 Answer

I have a sanyo dp42849. i turned it on this morning. the power light went on and i have no picture or sound


Sounds like a main board issue, but please have the set diagnosed properly. Be aware, some Sanyo main boards can be hard to find and costly !!!

Sep 05, 2012 | Sanyo 42 in. LCD TV

2 Answers

Sanyo DP42849 42 in. HDTV TV


Hello
What is the problem with your Sanyo TV? Please clarify more about the trouble you faces with it.

Nov 28, 2011 | Sanyo DP42849 42 in. HDTV

4 Answers

Hello my Sanyo dp42849 42 inch has no picture and no sound. when i turn on the tv a green light in the bottom right hand corner comes on and occasionally flashes off and then back on.


First, you need to know the sub-model of your TV.

It is called "chassis" and is shown on the back of the TV on the label where the model number is shown.

For example it can be "P42849-00" or "P42849-01".

Then search at www.coppelltvrepair.com/search or just go to www.coppelltvrepair.com and enter the link for SANYO DP SERIES to search for that.

Here's an example of a repair service (note it may NOT be the one for your exact model though!):

http://www.coppelltvrepair.com/p/41/sanyo-dp42849-p42849-00-does-not-power-on-repair-service

Hope this helps!

Jul 16, 2010 | Sanyo 42 in. LCD TV

1 Answer

Power light fiashes on and off no picture


Its a supply problem , so plz switch off & call a service engg.

Dec 23, 2009 | Sanyo DP42849 42 in. HDTV

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