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Samsung UN60JS7000FXZA TV. The standby light is on but the TV will not come on.

I opened up the back and didn't see anything obvious like bulging capacitors. There is a clicking sound on the power board and an intermittent humming noise from what appears to be the t-com board.

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Open internal fuse or power supply failure

Posted on Jun 18, 2018

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Posted on Dec 05, 2019

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Start by trying to reset your TV. Disconnect the power cord from the outlet, then press and hold the power button on the TV (not the remote), for at least 10 seconds. Then wait a few minutes and plug the TV back in and press power once. 2 blinks on Samsung TV's usually indicates a bad power supply.
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Posted on Apr 20, 2019

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Start by trying to reset your TV. Disconnect the power cord from the outlet, then press and hold the power button on the TV (not the remote), for at least 10 seconds. Then wait a few minutes and plug the TV back in and press power once. 2 blinks on Samsung TV's usually indicates a bad power supply. https://www.besanttechnologies.com/training-courses/software-testing-training/selenium-training-institute-in-bangalore?utm_source=backlinks&utm_medium=forum&utm_campaign=coursepage&utm_term=selenium&utm_content=Mounika

Posted on Apr 20, 2019

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Hi sounds like 1 off the capacitors have blown or failed if you got a bit of electrical knowledge u can locate and change it urself or buy a working pcb and swap it ok

Posted on Apr 19, 2019

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Start by trying to reset your TV. Disconnect the power cord from the outlet, then press and hold the power button on the TV (not the remote), for at least 10 seconds. Then wait a few minutes and plug the TV back in and press power once. 2 blinks onSamsung TV's usually indicates a bad power supply.
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Posted on Apr 12, 2019

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6ya6ya

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SOURCE:

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Posted on Jan 02, 2017

MICHAEL MULLINS

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SOURCE: Which Replacement Power Board for LNT4665F Samsung LCD TV?

Howdy,
It would be a lot cheaper if you just replace the two caps that have gone bad. Just get a cheap solder pencil from the store and about an inch of solder and you are in business.
The Power Supply Board is the center Board (towards left) after you remove the back off the TV. Remove Board from TV with the 6-7 screws. Replace capacitors CM852 & CM853; 2200ufd 25volts.

Thaks for using FIXYA, BIG IRISH.

Posted on Jan 02, 2010

Anonymous

  • 1 Answer

SOURCE: Samsung TV clicking and won't come on

Did you find out if that would solve the problem? I was really excited to learn that all I needed to do was change out the capacitors but after installing 4 it continued to click. I to removed the cover to the and found the relay where the noise is coming from

Posted on Jan 29, 2010

Cary Leonardt

  • 304 Answers

SOURCE: I have a Samsung LNS3251D 32-Inch LCD HDTV , that

In almost all cases where the set is taking a long time to turn on and then turning off it will be the Power Supply board that will have bulging capacitors, usually three to five. Look on the upper right side of the Power Supply and look for any blown caps. You can replace these caps and you will be fine. Now the other cause can be the Power Switch is shorting out. You can disconnect the the Power Switch but not the IR sensor and then turn ON the set with your TV remote and see if this stops the problem. If you are not skilled in component level repair on the Power Supply board then buy a new Power Supply board and install it.

Posted on Apr 16, 2010

Norman Worley

  • 1273 Answers

SOURCE: Samsung LN46A550 LCD power on/off

Apparently this is a known problem with flat panel TVs made a few years ago due to bad capacitors in the power supply. This same problem appeared in computer mother boards at about the same time so that the capacitors went open or shorted causing problems.There is videos on You Tube that addresses this problem see: http://www.youtube.com/watch?v=ZccykxrtX9g as a starting point and look around for other repairs

Posted on Jan 25, 2011

budmrtn

Bud Martin

  • 11361 Answers

SOURCE: TV WONT SWITCH ON LE26A456C2D standby light blinks

Please read my giude then you may understand more as to what it takes to make the TV functions.
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: 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.
Please leave rating if it helps.

Posted on Mar 06, 2011

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1 Answer

Power turns off after 2 seconds once turned on.


Get an ESR meter, not all caps show outwards signs of failure.

Feb 05, 2014 | Televison & Video

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Insignia LCD TV loses power


Probably it is a faulty power board.

Oct 06, 2008 | Insignia 37" LCD Flat-Panel HDTV

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Vizio model vx322 hdtv10a is losing sound and makes a loud humming noise and a poping sound every few minutes


Good day!!!!


That problem is usually cause of faulty capacitors on the power supply board..

Just follow this instruction to fix your TV..

1. Open the back cover of your TV.
2. Look at the power supply board..Its normally connected to the power cord..
3. After that,,try to look at the actual image of capacitors if it is bulged on the top so that you can easily determine the bad capacitors..
4. After that,,try to replaced the bad capacitors using soldering iron and soldering lead..replaced the capacitors only with the same type ratings and value..
5. Some of the capacitors not bulged so its better if have a capacitance meter

Jul 10, 2012 | Televison & Video

1 Answer

We have 52


Good day!!!!


That problem is usually cause of faulty capacitors on the power supply board..

Just follow this instruction to fix your TV..

1. Open the back cover of your TV.
2. Look at the power supply board..Its normally connected to the power cord..
3. After that,,try to look at the actual image of capacitors if it is bulged on the top so that you can easily determine the bad capacitors..
4. After that,,try to replaced the bad capacitors using soldering iron and soldering lead..replaced the capacitors only with the same type ratings and value..
5. Some of the capacitors not bulged so its better if have a capacitance meter

Jun 05, 2012 | RCA D52W20 52" Rear Projection HDTV-Ready...

2 Answers

LG 42PJ350 tv, will not power up, just clicks


Hello,

The issue you describe is consistent with a power supply board issue. This is the board where the AC goes to. This problem may have occurred as a result of irregular power supply, or excess power supply or power surge.

The TV is receiving current but cannot circulate or transfer the current to other necessary part of the TV because of the defective power supply board. You might be lucky it's just a blow fuse. Also a defective transformer can cause your TV not to power on.

All these can be checked on the power supply board.

But more often bad capacitors causes problem on the power supply board. I do not think the power board needs replacement, rather those defective capacitors is causing this issue. Open unit up and take a look at the power supply board.You will probably see one or more electrolytic filter capacitors that are bulged up in the top-not perfectly flat like the others.

The value of these capacitors will be different, most likely they will be somewhere around-820 to 2200uF/25 V( or /10V sometimes)

You can replace them with same values but I would recommend the voltage rating to be higher(like 35V for an original 25V) for reliability purposes.

What happens is,these bulged top capacitors will cause a low and unfiltered DC voltage=main board will malfunction(the relay will keep clicking until the caps are holding enough charge to bring the voltage up over a threshold point).

You can buy these capacitors at any Fry's or Radioshack store or you can order them online at vendors like "mcmelectronics.com"(look for electrolytic capacitors). After replacing these capacitor(capacitors) most likely the normal operation will be restored. Or you can by a refurbished complete power board to save you some stress.

Note: There may be also some other causes for this symptom ,like a defective T con board ,or main board,but the bulged top capacitors are the most common cause for this issue.

If you don't know about TV repairers, take the TV to the nearest repairman to fix the fault for you. Also, note that TV stores a lot of current, so wait a while before opening the TV back cover.

I hope this helps.

Good luck.

Jan 12, 2012 | LG 42PJ350 42 in. TV

1 Answer

Tv with no picture. i just bought a new bulb but still flashing lamp and no picture.I can hear it click on but thats all


Hello,

since you didn't get any picture, does the TV bring out sound? If the TV does not bring out sound, then it means the TV is having a power problem.

The clicking sound most of the time indicates a bulged capacitor on the power supply board of the TV. I think problem is with the power supply board and not the bulb.

But more often bad capacitors causes problem on the power supply board. I do not think the power board needs replacement, rather those defective capacitors is causing this issue. Open unit up and take a look at the power supply board.You will probably see one or more electrolytic filter capacitors that are bulged up in the top-not perfectly flat like the others.

The value of these capacitors will be different, most likely they will be somewhere around-820 to 2200uF/25 V( or /10V sometimes)

You can replace them with same values but I would recommend the voltage rating to be higher(like 35V for an original 25V) for reliability purposes.

What happens is,these bulged top capacitors will cause a low and unfiltered DC voltage=main board will malfunction(the relay will keep clicking until the caps are holding enough charge to bring the voltage up over a threshold point).

You can buy these capacitors at any Fry's or Radioshack store or you can order them online at vendors like "mcmelectronics.com"(look for electrolytic capacitors). After replacing these capacitor(capacitors) most likely the normal operation will be restored. Or you can by a refurbished complete power board to save you some stress from www.shopjimmy.com.

Note: There may be also some other causes for this symptom ,like a defective T con board ,or main board,but the bulged top capacitors are the most common cause for this issue.

If you don't know about TV repairers, take the TV to the nearest repairman to fix the fault for you. Also, note that TV stores a lot of current, so wait a while before opening the TV back cover.

I hope this helps.

Regards.

Sep 27, 2011 | Mitsubishi WD-57733 57" HDTV

1 Answer

When I plug in my tv it makes a clicking sound like it wants to turn on but it can't. After i plug it in it won't turn on after I press the power button


Sounds like a deffinate power supply issue, if you open the TV, there is likely a bulging capacitor on the power supply. Even if not a obvious capacitor problem, the Power board is likely the culprit.

Can buy new one on many websites, or used on ebay.
make sure you buy based on the part # listed on the board, and not by the model number of your TV, as there are usually many sub-models that all have different interior parts, and most are not capatable with eachother.

Jun 07, 2011 | Proscan Televison & Video

1 Answer

My avr 300 is making a humming sound through all speakers. It seems to be a little worse on the directv input but humming all the time. Is there a fix or a common problem that I am missing??


Remove all the input cables and see if the speakers still hum. If they do you have a problem in the amplifier, probably a bad capacitor. Remove the power and open the unit by removing the case. Should be screws on the back and side. Find where the power cord comes in and follow it to the board. This is the power supply section. Look at all the different sized cylinders (electrolytic capacitors) in that area for bulging. Replace any which look suspicious. Also inspect all the electrolytics throughout the unit for bulging, replacing as necessary. If this does not solve the problem you will probably need to take it to a tech for repair. If the unit quits humming after removing all the inputs you have a cable or cables with a broken ground. Get a known good cable, preferably new, and check the unit. If it still works OK, replace each input until the hum comes back. That will be the bad cable. Toss it and keep going until you get all the bad cables weeded out. Let me know if you need anymore help.

hardrocko

Thanks for using FixYa

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4 Answers

RCA DRC257N No Power


Had the same exact issue. RCA DRC257N was acting funny, frequently freezing up at HELLO screen, sometimes buttons would stop working during playback, requiring frequent unplugging to get back to working. Opened the case, pulled out the power board and noticed that capacitor C411 (1000uF 16V) was bulging out at top and bottom. Replaced with a $1.59 1000uF 35V capacitor from Radio Shack and all is back to good working order. Thanks.

Aug 17, 2007 | RCA DRC257N DVD Player

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