My samsung tv model number code LNT3242HX/XAA . Will not pick up any channels. I use to pick up all the local channels. Now it gets nothing!~! please help.

Plasma is old technology and it is 16 years old and made in Mexico, the worst place for quality control. It is time for a new one, or at least an upgrade. Or you can get a board kit and take a chance on fixing it.

Samsung HPT5054X/XAA Service Manual

ManualsLib https://www.manualslib.com > ... > HPT5054X/XAA

View and Download Samsung HPT5054X/XAA service manual online. Plasma Display TV. HPT5054X/XAA plasma tv pdf manual download. Also for: Hpt4254x/xaa, ...

Boards for it.

https://www.google.com/search?q=Samsung+plasma+tv+model+HP-T5054+board+kit

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.}

If you wish to buy its original remote control, contact the authorized service centre, or authorized dealer to your device brand. They can either give you a genuine remote control to your device, or can direct you, from where can you purchase a suitable one.
To select a proper universal remote control, you should know about the number of digits to its set-up codes. There are 3 digit, 4 digit, 5 digit, 2 digit and even single digit codes, to some brand devices. After confirming this, check the sites linked here. Both the sites have set-up code list and set-up procedure to many popular brand remote controls. Check which brand remote control has set-up code/s to your device brand, and buy that one according to availability. Brand name of the remote control isn't a matter, but it should have set-up codes in its code list, to the device brand you have.
Please note: Every new universal remote control will have set-up code list, and set-up procedure along with its pack. Never accept a remote control, that hasn't both of this. For more details about the set-up codes, visit the sites.
http://remotesearch.blogspot.com/
http://electro-medical.blogspot.com/
http://electrohelponline.blogspot.com/
Universal remote controls are available at most of the electronic spare part selling shops. Visit some on-line sites too, which deals with electronic spare parts.

Fault with 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.

Not sure this set has a built-in digital tuner. if not, you will need a digital tv converter.

you can go online and get the code. for some reason you have to go to westinghouse website and put in your model serial number abd it will give you a code allowing your tv to pick up local tv channels i dont know the reasong behind this

Replacement displays are the most expensive part of the TV and getting a new one will cost more than a replacement TV. You can check on Ebay for a unit that will not power up and you may be able to get a screen cheap enough but it most cases if the screen is broken then the TV is not worth repairing. Sorry

It might be the dmd board. You may be able to call samsung tech support and they may be able to diagnose over the phone. Good luck.

1. Make sure you have connected the cable to the correct input on the set.

2. Access the User Menu and do a "Scan for DIGITAL" channels.

That should do it...

I have the Samsung Sound Bar WS1R model. I tried all of the Samsung codes; TV, audio receiver, and audio amplifier. The DVD code 3918 worked for my Verizon FiOS remote. Program it to your AUX button and it will control the volume while your other buttons; channel, menu, etc work the set top box. I hope it works for you too!