Question about Samsung Televison & Video

1 Answer

KrishnamoorthyI am having SAMSUNG TV -UN29F4000AFXZA with a power board -BN44-00660A & b main board -BN-94-06272N -2013-08-09 with the following problem.

TV will not turn ON in Following conditions: 1 Plugged in to wall out let, the RED LED lights up. 2 Press power on button , TV does not turn ON. Carried out following tests: aAfter rear cover removed, plugged to wall outlet , REd Led on,. Now power on button pressed , TV will not turn ON. In this position i checked DC voltages on connecters both at power supply board & main board, DC voltages are 12.95V,12.95V,12.95v, 0v,0v, 5V, 5V. If i disconnect the cable either at main board OR at power board Backlight lights up. Kindly guide me to rectify this defect.

Posted by on

Ad

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Sergeant:

    An expert that has over 500 points.

  • Expert
  • 351 Answers

Might be a power supply controller problem.

Posted on Oct 31, 2018

Ad

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE:

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

Ad
budmrtn
  • 11361 Answers

SOURCE: Sharp Aquos LC-42DH77E 42" LCD TV TV appears to

The PNL-POW (LCD panel Power) and the PS-ON will be 0V until the main board send out the signal to turn them on, it is working.
Do you get backlights?
Did you check the fuses on the Inverter board? You power supply is working.
This service manual may match your chassis:
http://elektrotanya.com/?q=showresult&megnev=Sharp&megnev2=LC-42DH77E&kategoria=&kat2=all

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.

Posted on Jun 01, 2011

Testimonial: "Helpful"

budmrtn
  • 11361 Answers

SOURCE: Hello\r\n My Sony BRAVIA KDL40U2000 presents the

The 5vdc Standby is used by the main board to run the processor, when the power on command from the power switch or from the remote IR board is received, it will send out the PS_ON signal (3.3v~5vdc) to the power supply to turn on the rest of the power supply.
Are you saying that it HAS 0VDC for the PS_ON signal?
Please read my guides:
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: http://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.
Please post back what you find.

Posted on Jul 07, 2011

SD Tech
  • 14553 Answers

SOURCE: Samsung LCD TV 26

If you have not tried it you may want to see if the voltages listed come up with boards disconnected from the power supply one at a time---This could be anywhere from micro to the panel.

Posted on Mar 26, 2012

vinceisaac
  • 2432 Answers

SOURCE: Power Supply Issue - Green LED ON..no power up

tried to disconnected the 24v supply connectors going to the power inverter board which may the cause of voltage drop. after you disconnect then if still no output 24v dc coming from the power supply board the cause will be bad power supply board. check for an open resistance or bad regulators going to the 24vdc out. by the way you should connect all the connectors going to the main board to turn on the processor and the inv_on voltage going to the inverter board.

Posted on Nov 02, 2012

  • 6705 Answers

SOURCE: LG 42LD560 LCD TV POWER PROBLEM

While you checked the condensers, did you look for faulty connections? places where the solder has a little crack?
And did you check visually, or did you check electronically? In a power supply lots of things can go wrong. More than alone a capacitor with a rounded head.

Posted on Jul 11, 2014

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Samsung LN46A500T1FXZA 46 TV no picture or sound with HDMI connected but menu screen looks good with no inputs.


If you get the menu the tcon is working and its the main..You won't be able to troubleshoot the main and even if you found the bad part changing it would be almost impossible in most cases, replace the board, try shopjimmy.com, that is where I get my parts, do NOT buy on eBay...to many people that know nothing about TVs selling boards that aren't tested, nothing worse than getting a replacement board and it doesn't fix the set.

Feb 18, 2018 | Samsung Televison & Video

1 Answer

Samsung un55c6500vfxza power board I have replaced the power board and the tv is doing the same thing.....turning off and on by itself, any ideas ?


Hi Jim, Some years back I received a 46" Samsung LED TV with the same problem. The main board was faulty in that case. Power on 5V line was short to ground and I had to replace The main board. I hope it helps. Good luck.

Jan 14, 2018 | Samsung Televison & Video

1 Answer

I have a faulty Samsung LCD TV and i would like help identifying the part of the TV that needs to be replaced.


like back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis. http://electronicshelponline.blogspot.com/ To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.

Nov 12, 2016 | Samsung Televison & Video

1 Answer

Follow up question on samsung tv model-ua40f6400ar power supply checked with output b+ and relay not clicking on/off if not connected to main board,posible fault mian board?


Fault at its main digital board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. http://electronicshelponline.blogspot.com/ In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary..

Oct 12, 2016 | Samsung Televison & Video

1 Answer

Samsung tv wont turn on


Fault in the main power supply regulator board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/
It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.
There are circuit diagrams [schematics] to some model power supply boards to Samsung. BN***** Series SMPS. Check it, and try to repair if you're sound in electronics, and has previous work experience in repairing the SMPS power supplies.

Feb 25, 2015 | Samsung Televison & Video

1 Answer

FIRMWARE SAMSUNG BN 41_01536A


Contact the authorized service center for Samsung. They can provide you the correct USB update. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" will make surf easy.
http://electronicshelponline.blogspot.com/

Mar 14, 2014 | Samsung BN94-03982B Main Board for...

1 Answer

Samsung plasma TV cooling fan didn't turn on and the TV overheated. Tried replacing with a new fan, but that fan will not turn on either. TV works just fine with back cover removed and a 12" desk fan...


the is a fuse on the board if you follow the power line on the board back to the main power board you will find it. also test the volts with a meter just make sure you have volts. some of these models also have a thermal switch that then the tv hit a surtan temp the fan kicks in.

Sep 17, 2013 | Hitachi 42 in. Plasma TV

1 Answer

No sound on my samsung smart tv


you might need a fix it kit some mother boards e prom go bad seen this a lot i have a 32 Samsung doing that same thing check ebay with the number of the board starts with bn

Jul 21, 2012 | Samsung Un55d6050 TV

Not finding what you are looking for?
Televison & Video Logo

Related Topics:

56 people viewed this question

Ask a Question

Usually answered in minutes!

Top Samsung Televison & Video Experts

The Knight
The Knight

Level 3 Expert

76140 Answers

Jerry Greenberg
Jerry Greenberg

Level 3 Expert

1691 Answers

Ekse

Level 3 Expert

13434 Answers

Are you a Samsung Televison and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...