what is the cost of a high voltage regulator for a 42" LG Flatscreen television?

Could you please be more exactly about that voltage regulator?

Do you mean at the input of your TV, so the mains input voltage is stable for TV?
In this case what is the input voltage in the country where you live?

Or do you speak about a component inside the TV which has to be repaired?
In this case what is exactly does work on your TV?

In both cases  what is the exact model of your TV?

"42" Flat screen LG" is not enough. There are OLED, LED, LCD, Plasma...TVs and they have different specs.

You'd need to give us the manufacturer and part number of the regulator. But generally such transistor or IC parts don't cost a lot, maybe from a $ to a couple of them. It also depends on where you are located, as the prices aren't the same in every country. Sometimes it can be hard to find the exact parts, and also, often you have to buy a couple of them...

also - the exact TV model can help

Hello and Good Evening Everyone,

           Thanks so much for getting back with me so soon in response to my question.  With regards to the confusion surrounding my question, I must apologize for the lack of  detailed information.   Basically, the television set only makes a click sound and nothing more when turned on.  A picture or sound is never produced.  The model number of this television is 42LC2D-UE with a manufacture date of February 2007.  Just in case this is needed as well, the serial number is 702MXBP0R549.

           If more information is needed, please feel free to let me know and I will furnish it as soon as possible.  Once again, many thanks everyone for  your followups.   I look forward to receiving further feedback to this question.  

            Thank you

            George

This widens the issue to many more things than just a "Voltage Regulator". It could be the Powersupply, or other parts of the TV. Before looking for the price of a voltage regulator you should concentrate on finding the actual cause of the problem. This can only be done by opening it up and inspecting it. For that you need some electronic background, which, based on how you asked the Question, I doubt you have.

In my point of view your only option is to get an electronic person look at the TV, and have him repair it. The price of the defective part(s) will of course be almost irrelevant, as the time and labor will probably be far more expensive.

Hello

            I am asking this question on behalf of a friend, not myself.  As I understand her situation, the television has been looked at by someone with some degree of electronic repair background.  Now, I do not know what his credentials are with respect to formal training, education, certifications, licenses, etc.  At any rate, he diagnoised the problem as being a defective high voltage regulator.   Her friend wants to obtain this part to purchase which brings me to the gist of this post.  I hope everything I just said made sense.  If more clarification is needed, let me know.

             Thanks

             George

As I mentioned the price of the part very likely will be irrelevant. Those things just cost a couple of $'s, if even that much. The problem most of the time is getting them, as they often aren't freely available on the market, or you need to find a similar part that acts the same.

The "someone who looked at the TV" would have seen the manufacturer and part number of the defective device. Just ask him for that part number and then it will be easier. Besides that, he should should be able to find the price for the device himself.

Hello and Good Evening Everyone,

             The link provided is for a LCD TV Service Manual for the Model 32LC2D.  However, the model number of the defective television set is 42LC2D-UE.  Can the service manual contained within the link also be used for the model 42LC2D-UE?

             Thank you

             George

Yes, and It is a manual for 32LC2D(U)-UE, 37LC2D-UE, and 42LC2D-UE models.  Such indicated on the front title page.
Viki downloaded it for you.

Hello Everyone,

              Thanks so much for your shared advise and especially the resourceful links.  I have printed out all of the information contained within the links and will be giving it to my friend tomorrow.  

               Once again, many thanks for your guidance.

                George

You bet.
Good luck!

Thank you for the points.
It would be very nice if you could provide later a short feedback, so we we also know what was defective and if our presumptions were right.

Hello

           Thank you for your shared input.   As I get updates on this situation, I will post more information.  Once again, many thanks for your help.

            George