20 Most Recent Westinghouse TX-42F430S Television Questions & Answers

I know this is late, but this happens frequently. If anyone else has the same problem try unplugging the TV for 60 seconds. Plug it back in and then hold the power button down for 30 seconds. That will reset the TV.
You should see the Westinghouse logo come up and the HDMI should work. This has happened twice with my TV in 1 year.

There is a defective electrolytic capacitor (470MF/16V) on the main board that went bad, it will causes intermittent, slow, or not power up, the location number of the cap is not marked on the board, please see the attached photo to locate it.

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

Chances are it is the main board that needs worked on. You should find one of these part numbers on the board, this set has different versions on the main board due to different panels that were put in during production. 55.3YT01.001G 55.3YV01.001G 55.3YV01.011G 55.3YV02-D01G 55.3YV10.004G 55.70E01.001G 55.70E01.011G 55.70E01.021G 55.70E10.001G

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.

Tuner can be replaced. Contact the service center.

Hi my name is Roety,
I can help you with your issue ,
Why don't you simply run the cable box and DVD stereo outputs direct to the receiver. Thats what most people do. TVs do not passthrough stereo signal very well do to DHCP compliance requirements .

　
　
　
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Thanks I’m happy to help further over the phone at https://www.6ya.com/expert/eric_ab7c09ec01841771

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.

The solution posted above by geomach7 worked perfectly. This tv is pretty much a huge monitor with a tiny computer in it. Usually when your computer messes up a restart will fix it, this tv is no different. 1. Unplug both the TV and HDMI media source (in my case, my PS3.) 2. Wait 30 seconds. 3. Plug in the TV and turn it on (via remote okay). 4. Wait for the Westinghouse logo to come on, then disappear. 5. Plug in the PS3. 6. Turn the PS3 on. This sequence fixed the problem for me. Hope it helps, thank you so much geomach7 you're awesome you saved me hours of worry!

That problem is usually have 2 causes..Its either power supply board or main board..Please take this steps on how to determine the problem:1. Open the back cover.2. Check the power supply output...It should have 5vdc for the main board..12vdc or 16vdc for the audio and 24vdc for the back-light inverter..3. If those 3 voltage supplies have encountered voltage drop...The problem could be on power supply board..4. If the power supply output is normal..The problem could be on the main board...5. If the problem is power supply you should check if the capacitors are bulged on the top and try to replaced it..If you can't do that you can purchased new power supply board..6. If the problem is on main board there is no D.I.Y repair on that so you need to buy a new main board that fits to your TV..Hope this solution will be helpful..Thanks for using fixya...