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Samsung LCD tv mod # LNT3242HX/XAA OTA tuner nothing but noise on all channels.

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  • Samsung Master
  • 76,060 Answers

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 sites linked here. Pull up older posts.
https://electronicshelponline.blogspot.com/ http://homenol.blogspot.com/
In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.
Before going further; try a hard reset first. If it does not help you, replace the main digital board. There are two methods to reset TVs. The first is simple to do; a Hard Reset. The other is somewhat skilled; is a Factory Reset (System Reset). To make it a hard reset, just unplug the TV from AC mains wall socket, and re-plug it back after 15 minutes or so. If you do this by overnight is better. This procedure will make it a hard reset. If you want to make it a system reset [Factory Reset]; you have to enter its service mode option, and select the factory reset option. If you wish to get some details; visit the site linked here.
Search the site by type in the "brand name" to your device; [Exclude the model number], in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.
{View the site in web view by Mobile or by a desktop to see the search box. Mobile view has no search box.}

Posted on May 17, 2019

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4 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE:

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Posted on Jan 02, 2017

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walesarumi
  • 6993 Answers

SOURCE: Samsung LCD tv mod #

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.

I do not think it needs replacement, rather some defective capacitors are 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.

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.

Compliments of the season.

Posted on Dec 30, 2010

KingDWS
  • 1606 Answers

SOURCE: My samsung tv model number

This can be one of a couple of things. If you had the power go out it is possible the tv just needs to rescan the incoming signals to find the channels. It's also possible that the video source was changed so that perhaps it is looking for a signal where there is none. ie it should look for cable but is looking at aux input and not seeing anything. If you are seeing a blank blue screen this is probably all that is wrong. You need to go into the menu then setup and select source and then scan the channels. This will be in your owners manual and is easy to do. Usually you only ever do it once when first you get the tv.

If that checks out and you are sur eyou are getting a incoming single then the tv reciever section may have failed. When you have ruled out the souurce then you may need to take it to the repair depot. You should contact smasung and get the closest repair dpot location. You can just go to the webpage and look under support to find and then call and see if they will give an estimate. The repair cost could get close to what a replacment tv would cost.

Posted on Aug 11, 2010

yutianyunren
  • 848 Answers

SOURCE: SAMSUNG LNT3242HX/XAA REPLACEMENT SCREEN

SAMSUNG LNT3242HX/XAA REPLACEMENT SCREEN? This trouble maybe power supply or inverter boards is defective.
first you can test the voltage of the multr,and then check which part is defective.From Wisiny.com can find those parts
if you have any question,please let us know email:service@wisiny.com.thanks,we sincerely hope we can help you!
you can also check this boards whether suit you:
IP 45130A Samsung BN44 00127F Power Supply Backlight Inverter

Posted on Feb 02, 2015

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On a different brand of TV this worked. The channel had broken up for several weeks; the reset was used when the channel finally became totally corrupted (no video on one sub-channel, no audio on the other).

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1 Answer

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1 Answer

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You have a really nice TV, you have a built in ASTC tuner(digital).
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Visit this site for some great info on digital TV.
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Let me know if I can provide further assistance
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