Toshiba LCD TV 37AV502U wont change channels

Hi Michael,
The buttons themselves might be defective but it is very unlikely that all of them would become defective at the same time.
I would suggest to open the TV and check for any loose connections between the main board and the buttons board assembly.
Let me know if you need further assistance.

Did you try changing the source? It might be getting the channel from a source other than the TV.

Use the buttons on the tv

As goofy as this might seem, a large accumulation of dust inside the TV chassis could be the culprit. The dust becomes conductive and drains the charge from the capacitor that keeps the memory "alive" while the set is powered off. I'm a 40+ year veteran TV technician, but I've specialized almost exclusively in antique (1940's to 1970's) all vacuum tube sets for the past 15 years. I can get a dead 1946 RCA 630TS 10" B/W TV (worth about $2,500 as an antique) working again with about 10 hours of bench time. My new roommate, a lady I've known since we were kids, brought a Toshiba 37AV502U with the same "loses its memory" symptom when she started renting my spare bedroom recently. I opened it up looking for a bulging electrolytic capacitor or a dead RTC battery like some computer motherboards. I didn't find any suspicious capacitors and the only batteries this set uses are the AAA cells in the remote. What I did find was A LOT of dust inside the set. Cleaned the dust out, put it back together, and the set is holding its memory now when powered off. Obviously, the dust was creating a shunt path that was bleeding the charge away from the capacitor that stores charge for the memory.

Hi,, today i got the solution for the problem 'Tv Stuck On Language Screen"
I have Skyworth Lcd and it was stuck on Language screen 4 days back, i've tried every sigle App and Different Universal Remotes and buttons on Tv but nothing was working except a single App named "SURE UNIVERSAL REMOTE FOR TV"
i suggest if someone face this Language screen stucking problem and no buttons and remotes are working then you should download this App on your Cell phone and select your tv and you'll surely be able to restore your Tv.

Think you need to take it back to shop and get it exchanged.

--

Please dont forget to vote if you liked my answer

thanks

------

frist turn on tv

press the menu botton

press the channel donw botton to go to setup

on setup press the volume +

press the volume botton again

press the source botton to enter in the plug and play option

press source botton and select store or home by pressing the volume botton

and then press the source botton again

after this just turn ur tv off and than on

Redo it again lost power to tv,sometime loss Data save.Data dossn't dissapper only lost.

You may be able to program your cable box remote to control your TV in addition to your cable box. When they initially set up your cable box they probably left a pamphlet giving you instructions on how to program your remote. I'm not sure why you can't change the TV channels manually but this may give you a work-around.

Good Day;

To reset the TV unplug power cord from the wall for 2 to 5 minutes then plug back in.

Good Luck, big IRISH.