Remote control wont increase or lower volume - LG 42LC2D 42 in. LCD HDTV

This is not a fault with its remote control. The main board to your TV should be checked. Contact any service technician. If you wish to get more details, check the site linked here.
http://electronicshelponline.blogspot.com/

Code for NEO 1451 TV?(universal remote control)

The main system control memory IC is faulty. Check and replace it.

Good!

The remote might have problems,tries used the manual tv buttons on the sides of the tv,see if the problems is not accuring.If it is the remote control only,the remote CPU chip control everythings,it not repairable most of the time.Try website like Remotes.com to buy a an original remote for the replacement.

As far as I recall, the volume control on the PVR remote only controls the volume from the PVR. So, select the volume fully up (using the PVR remote) then increase the volume on the TV (using the TV remote) until it's as loud as you can stand. You can then adjust (decrease) the the volume to suit using the PVR remote.

plug off you tv and back on after 1 minute, check the intelligent volume control, and that's solved

try programmin the ir code with a delay. .3 .4 usually will solve your issue. part of trouble shooting when the remote is connected to the server theres an option to increase or delay the ir emitter. hope this helps

When the volume increased did the display show it doing so as if someone was turning the knob?  I mean did the volume go from like level 15 to 30 or did the unit's level stay constant while the audio volume increased?
Were you alone or sharing the room with a jokester who has a universal remote?
Does this problem occur when the batteries are removed from your remote?
Are you sure the 'volume up' button on the unit itself is disengaging properly after being pressed?

Bad volume down tactil switch? Remove suspect switch and see----