Question about LG RU-42PX11 42 in. EDTV-Ready Plasma Television

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TV changes input and sound on its own

The TV will automatically change inputs and then the volume increases on its own to level 100. I can then change the input and volume manually from the TV, but after 10 minutes or so, it does the same thing all over again. Please help!!?

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The only simple thing you can do is to check the manual buttons on the set for any sticking. When pressing a button down you can feel the detent.(click) When releasing the button it should raise up freely. Sometimes while cleaning the cabinet moisture gets on the switch assembly under the buttons causing random activity. I have experienced three common causes for your problem. 1 sticking buttons 2 defective switch assembly. The assembly can be unplugged from the circuit to see if the problem goes away. 3 a problem with the microprocessor that controls the functions.( requires a qualified tech to repair
) hope this helps

Posted on Dec 12, 2007

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I bought my Toshiba t.v two years ago and i don't use it often so it's brand new. it was acting up last night.. it automatically changed inputs and then the volume increased on its own to level 100. i unplugged it from the circuit and it is working fine now. thank you so much. you saved me a lot of money :)

Posted on Jan 08, 2014

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Posted on Jan 02, 2017

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1 Answer

Pioneer vsx-d411 after 15 minutes the input changes automatically


Changes how? does it go to another input, change volume level etc?

Apr 02, 2018 | Pioneer Audio Players & Recorders

Tip

SERVICE MODE TO BEKO 23WL46G 30WL46G


Service Menu StructureThe service menu has three items: display, calibre and version 2.1 Display Display item has seven options:
a- Panel
Panel option gives information about the current panel resolution. It is a read only option and can not be set.
b- Power on time
Power on time gives information about the last update time of the SW running. It is a read only option and can not be set.
c- Backlight on time
Backlight on time option reserved.
d- Scart prescale
Scart prescale option sets the prescale values for the input sounds entering the scart input of the MSP(Micronas Sound Processor). Changing this value you can adjust the level of the output sound going to loudspeakers for all the sources except the Tuners. The range is between 0 and 100.
e- nicam prescale
Nicam prescale option sets the prescale values for the Nicam standard sounds for tuner inputs. Changing this value you can adjust the level of the output sound going to loudspeakers for Nicam sounds entering the analog sound input of MSP. The range is between 0 and 100.
f- fm/am prescale
fm/am prescale option sets the prescale values for the FM/AM standard sounds for tuner inputs. Changing this value you can adjust the level of the output sound going to loudspeakers for FM/AM sounds entering the analog sound input of MSP.
The range is between 0 and 100.
g- Agc(Automatic Gain Control) adjust
Agc adjust option sets the input voltage going to IF decoder AGC pin. Changing this value you can adjust this voltage for optimum Tuner performance. The range is between 0 and 31.
h- R/G/B Brightness/Contrast:
These are used for color bias adjustment. The range is Between 0 and 255
Calibrate
Calibrate item has nine options:
a- video format
Video format option force the video format to the desired format. Selectable formats are Auto, Pal, NTSC and SECAM.

FOR MORE CHECK THE LINK BELLOW
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The audio output level is too low. How do i increase it? I have to turn the volume up on the TV almost maximum to hear a "normal" level of volume.


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1 Answer

Low audio through tv speakers


It sounds like a connection or signal level problem, your audio system may have a greater sensitivity than your TV, has the DVD got an output volume level to adjust, some do via their remote control also some TV's have independent volume levels for their inputs within menu settings.
Looks to be phono audio so if its none of the above then you will need a small audio pre-amplifier to increase the signal level, though for my thoughts this might produce a buzz problem because an amplifier might pick up stray noises from the TV or DVD.

Amazon or ebay may help there for small units, in a metal box is best for screening, it would not require a massive pre-amp with high gain, a battery type would need to be powered by AA types for long working periods if you go that route as a PP3 will fail over extended working time.

Hope this helps........

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Sharp LC-42D43U troubleshooting with the maximum volume sound


Found this on another site and it worked, had to switch back and forth a few times but it worked........

I have a Sharp LC-46D43U LCD TV. I think this is a entry level for large lcd tv's. With the volume all the way up at 60, my wife and I could barley hear the tv. I was playing around in the menu and some how have the volume at almost twice the volume. What I did was:
Go into the menu
Go to option
Go to output select
and change from fixed to variable and back to fixed. You may have to do this a few times.
Sometimes the volume goes loud after 1 try and sometimes it may take 10 or 20 tries.
But if I change any settings, even the channel sometimes the sound goes back down to where it was.
Has anyone done this, did it work for you. I don't know very much about electronics and I have now ideal why this happens.
I wonder if this is just something with my tv.

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Using headphones with Logitech X-230 speakers


I really don't know, because some of the newer gadgets come with fixed volume control due to law suits, ect. Try to see if you can bring you TV menu up and see what the sound setting is.

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Sound 'changes' when using different input sources


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