The sound doesn't come on with the TV.

What we call a thermal problem----if a 17 inch likely not cost effective to repair and company who made it in China does not really sell parts.

Your tv is either from australia or Canada.
Contact can be found here" http://www.hisense.com.au/products/television

Lia my tv did the same thing did you ever get an answer?

Bill

power supply issue..may be some bad capacitors simply replace them....dada....your prob solved

happy to help

In trying to program a universal remote for my Hi-Sense TV, the TV locked. How can I unlock it?

check your power output if ok replace your mainboard

I, also, have the Hisense LCD 1504 and cannot turn it on with the original remote. I have to use the ON button on the side every morning. You have to hold this button in for a while then wait a while and presto, the blue button shows on the front and the picture comes on. If it fails to work the first try, just try try again. It does work for me this way. We had this same experience with the TV in our room at a Hotel where we were on vacation and the TV worked fine when we turned it on using the side ON button. It just takes a while for the picture to appear. Hope this clue will help someone.

Try turning the main power switch on the back of the tv off.
Then hold the menu button and push that switch back on while still holding the menu button.
Keep holding the menu button until the setup menu pops up.
Next, be sure your input is set correctly(air or cable).
Next, do an auto channel search.

That did it for me. After I shut it off I had to do it one more time but it did the job. A friend of mine gave me the tv for free because nobody he new could figure it out. I took it home, got lucky, and figured it out in about ten minutes.

Hope this works for you.
jb

is it in demo mode

To unlock your Tl2020 with a universal remote just go into the menu and select V chip setting. The password from the factory is four zeros (0 0 0 0 ). Once you get in you will the letter "B" nect to everything. Set everything to the letter "U". Then, turn off the television. The set should be unlocked now. Good luck !
Frank