The picture went black, but the tv still has audio

Probably a blown lamp. Check owners manual for instructions

If a 4 year old 32 inch set likely cheaper to replace than repair it assuming parts are even still available.

The tv LCD screen panel go black blank,but dose the tv still have audio sound of the program?Yes?The tv have 1 or 2 a long boards that are called a LCD inverter boards.It is dying and require replacement.These 1 or 2 a long LCD inverter boards only job are to provided a backlight for the tv LCD screen panel to produced a picture.Tries websites like Shopjimmy.com,Ebay.com to buy those 1 or 2 refurbishes long LCD inverter boards for the replacement.

I think you chose a Westinghouse Lemon, go this site and read all of the negative reviews of this model;

http://reviews.cnet.com/flat-panel-tvs/westinghouse-sk-32h240s/4852-6482_7-32429419-2.html?tag=userReviews;page

Here's just one of the reviews;"best chunk of aluminum i ever had the fortune to buy"by stevecox25 on June 11, 2009-->
"Horrible customer service on a worse television" by westinghousecrap on March 20, 2009 Pros: Good picture once it is properly adjusted.
Cons: Low quality audio, had the TV for 10.5 months and the picture went out, sent the TV at MY expense to TX, and I've been waiting for 2 months, and customer service can only say that there is a "delay". And they don't send a new TV, it's a rebuild.
Summary: Please don't waste your money on this TV, spend a little more on a different brand and save yourself the headaches I've had. I'll never purchase a Westinghouse product again. Customer service has been no help, and their answers are vague at best. Learn from my nightmare, NCAA march madness on a old 19" TV because my Westinghouse quit working 2 months ago and they still haven't replaced it.

That is exactly what it is. Mine, as well, (1yr and 4mos old) went out. But my sound, eventually, went out as well. However, I was lucky and had the two year warranty and it was covered. Apparently this is an issue. The fella's that picked up the TV made the remark that "this is another one".

The problem is in the LCD controller board is overheated because the power supply unit is at the bottomof the TV and the heat rises upward to the vent on the top of the TV. You can verify that is hest problrm by running TV with the back removed and have a small fan blowing on the top secdtion of the TV where the LCD controller is. This how I fixed my scrambled picture after warm up (I added heat sinks to the IC on the LCD controller board) : http://s807.photobucket.com/albums/yy352/budm/LTV-32W3HD/
You can try it if the board was not badly damaged already by the heat. My has been running great for over a month now.

I'm willing to bet it's the main board. Its the board that all the video and audio inputs. What is the model number I could find the part for you. You could change it out yourself, Its not that hard. Let me know.

contact the NY Service Center for Westinghouse. web is www.asnyonine.com

Our Westinghouse Flat screen tv plays for a little while then turns the picture off but the sound is still on. How can we get this fixed?
Thomasville, Ga.

Anytime an LCD has a shade of pink, that means the CCFL lamps are about to go out. Now that you have a black screen, I'd say you just need some new bulbs.