Question about Westinghouse TX-42F430S Television
This is going to be associated with your inverter or your display board. Some cases they are the same board. You will have to take this apart, find the board and then find a replacement.
Posted on Apr 13, 2014
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Posted on Jan 02, 2017
I just fixed the same model and with your symptom. What it appears to be is the main module is locking up just after the Logo goes away. All you can do is unplug and try again and all you will get is the logo for 5 seconds and then black screen, no sound and led stays lit. Cannot turn off or on. The power supply is actually working fine, it's the main module that has died. This module is no longer available, the part number was W470PROLX68. What i did to restore operation on this unit was to insert 3 volts into the plug going to the master inverter board and then plugged the tv AC cord in. The set showed the logo and then it started working. I removed the 3 volts and it has worked every time since then.
Here is what you should try to do: First take two AA batteries and solder them in series and attach two short wires so you can use it as a power source. Now you have a 3 volts power supply. Next Remove the stand first before removing the back cover. Looking at the back of the unit you will see the power supply and the main circuit boards in the middle (under metal shields) and two boards on each side. These are partially covered with a metal shield, the one on the left side is the master inverter, the one on the right is the slave inv. They both have a plug and wires going to them from the power supply, but the one to the master will have two extra wires. I believe the colors are purple and blue, and they are separated with an empty hole (unused part of the plug). The wire on the end is where you will hook up the positive lead of your battery pack. The negative lead simply goes to the metal shield. With these hooked up plug the tv into the ac and give it a couple seconds and hopfully you will see the tv come on. If it does then disconnect the battery pack and try it without it. good luck.
Posted on Nov 17, 2009
SOURCE: model LTV-27w2 westinghouse
The tv got a heat sensor, the only way to fix tv , if you are a tv tech, is to buy a bottle of "freez it" spray small sections of tv in side. It will be clearly where the fault is if you spray correct part that give trouble. Replace that part and Tv will be Ok.
Posted on Dec 22, 2007
More likely it's because of power circuit of your TV set. If you are not trained enough in repairing TV sets, appeal to your local repair center
Posted on Jan 25, 2009
This kind of failure is very common; that is why I suggest that one should keep the old CRT TV, buy a converter and put them both in the garage or basement so they are handy when our s*e*x*y new sets go belly up.
With fair confidence I can say that the main power supply has failed.
If you want to try this on your own, it only will require the removal of a few screws and a flashlight.
- Unplug the set overnight. - Remove the rear housing - Use some logic and these tips; look for a separate board with larger than average parts on it and seems closer to the power cord than others. This will be the power supply.
Check the board over for something that looks like a part number and record it. If you find more than one, one of them will be the bare board number, the second (sometimes on a sticker instead of printed directly on the board) should be the part number for the assembly.
Search for the Westinghouse service company nearest you and call them with this info. Ask if they repair these or just sell new ones. If it is the latter, don't pitch the old one, continue to look for a repair service that will take it on after you have the new one in place and can watch your favorites again. The new supply will likely cost between $90 - $150 and with a little common sense, most anyone can remove and replace these in the set. Expect any repair to cost about the same as a new supply; US technical labor costs more than Chinese assembly labor.
These supplies can be as reliable as the primitive older type but companies refuse to use the high-grade components necessary to give them a long life so they fail much sooner than the old, less efficient kind known as 'linear' supplies.
Posted on Mar 22, 2009
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