Thank you for posting your question on Just Answer! I will be happy to help you with this problem. Can you please give us some more information so I can better answer your questions.
-When you try to adjust the volume what does the tv do?
-How old is the unit?
- Do you have this problem while watching all different devices hooked to this television? (DVD player, cable, satellite, game counsel, ect.)
Please give me this information and I will be happy to assist you further.
Use the samsung remote to enter the menu and go to sound settings, the bottom setting says speaker select, what is that set to? Make sure it is set to TV SPEAKER
Does that change anything?
Hi and thank you for using justanswer.
To answer your question;
If you`ve never set a pin/code to lock your tv then the default code should be 0000
In case this does not work then you can reset the pin/code to the default 0000 with this procedure;
POWER(off) → MUTE → 8 → 2 → 4 → POWER (on).
Once you have the set unlocked you can go into your menu and turn off the V-chip / parental lock.
If you`d like to download the manual you can click here "click me "
You will find the info you need on pages 30 to 33
Hope this help and let me know if you have any questions.