LG 50ps11 TV comes on at max volume every time unit is turned on

Resetting/Initializing the receiver to factory settings

Warning: This will erase all settings and return the unit to its original factory settings.

Note: This procedure is done on the front panel of the receiver only.

1.Set the unit to Standby by pressing the Power button.
2.While holding down the Straight button, press the Power button.
3.SP IMP. 8 Ohm Min (Or 6 ohm) will come up on the Front Panel.
4.Press the Right Program Arrow button repeatedly until INIT-CANCEL comes up.
5.Press the Straight Button repeatedly until INIT-ALL comes up.
6.Press the Standby button to turn off the receiver.
7.The next time the receiver is powered on, the factory settings will take effect.

electronic board fault , usually cracked solder joint see the liink below for more details

http://www.repairfaq.org/samnew/tvfaq/tvtmmqcs.htm

I am trying to work out which has got the high volume.
If it is the Pioneer then it could be the volume control chip that is faulty. These days volume is no longer determined by a control that adjusts the signal level. The signal is passed to a chip and the volume control setting information is also passed to the same chip. If the chip goes faulty then the volume will sometimes go to max, regardless of the volume control setting. This can also apply to the TV sound as well.
If the sound level is high on other functions of the receiver, such as the radio, then it is certain to be the sound volume control IC.

Look in the setup menu for a selection for volume level. There should be a way to setup what volume level the unit comes on at.

I found with mine that the volume of the LG is dependent upon the volume setting of the main source TV. Set the volume for the source TV louder and the LG should respond accordingly. Maybe it's just the way I have it hooked up (and maybe yours is the same)... YMMV

you could send the tv in to the manufacture if its a newer tv (LED, LCD, Plasma) they can fix it for a fee other than that there is no other way

your tv will have an 'audio out' you plug that into your surround sound system with rca cables.

1. The volume up button on the remote may be stuck down- try wiggling the button to get it out. If it isn't the remote if the local volume control is in fact two buttons perhaps that one is stuck in or damaged.

2. The dvd sounds like it needs a new laser unit- a worn laser unit may play up like this.
It might be time for a new one as replacement can be sometimes more than the cost of a new one nowdays!

We had the same problem of pathetic sound quality and volume with a sony brava. Thats just the way they make tv's these days because most people buy a surround sound system as well. We bought logitec computer surround sound speakers for about $140 and plugged into the ear jack, problem solved, we have heaps of volume and stacks of bass.

Go into the service menu and reset the main board.