How do i get to the input channel - Sanyo DS20930 20" TV

go to the Menu and you should find it.

If you are using an Antenna, Coaxial cable from the wall or a cable/satellite box connected to the TV with a coaxial cable, you will need to do the following steps:
1. Press the INPUT button on your VIZIO remote to view your current input source. Ensure that the TV input is the input that is selected.
2. If the TV input is not selected, press the INPUT button on the remote until the TV or DTV input option is selected.
3. Press the Menu button on your VIZIO remote and select CHANNELS.
4. Select the option that says FIND CHANNELS.
5. Once the scan is completed it will say DONE. Press the OK button on the remote once. This will go back to the channels menu and then you can press the EXIT button to leave the menu.
6. Use the VIZIO remote to change your channels

If I understand you correctly each channel has a single input in the amp, then yes! white goes into channel 1 and the red plug goes to channel 2 this way your signal will be stronger which translates into louder sound.

if you go to channel 2 then channel down the channels between it and the highest are your input channels hope this helps

Auto channel search is your friend. Once the tv has been through it and finds active channels, your channel button should work the way you envision.

if you have indication of signal input for both channel you can go and reverse output cables of the speakers if the problem transfer to good channel change speaker cable-if you did not have input indication in the bad channel try to inverse input cable if it is cleared change your input cable if not you will have internal trouble and need service center to help.

It's unclear what type of connectors are on the end of the cables(s) coming from your computer.

This amp only works with mono 1/4" TRS and XLR connectors, not standard RCA connectors.

Did you try the Right one in the Left Channel to see if the Left Channel worked?

Refer to the following manual and read up on the connectors (page 7) and the use of the Stereo/Parallel/Bridge Switch (page 8). When it is NOT in Stereo Mode the unit only uses the Right Channel controls and input.

http://img3.musiciansfriend.com/dbase/pdf/man/m_480824.pdf

STEREO/PARALLEL/BRIDGE switch
Use this switch to select the operating mode.
• STEREO mode
Channels A and B operate independently (as with a conventional
stereo amplifier). The Channel A input goes to the Channel
A output jacks, and the Channel B input goes to the
Channel B output jacks.
• PARALLEL mode
The Channel A input signal is output through both the Channel
A and Channel B output jacks. The Channel B input jacks do
not function. Channel A and B volumes can be independently
adjusted.
• BRIDGE mode
The Channel A input signal is output from the BRIDGE output
jacks. To adjust the volume, you must use the Channel A volume
control knob.

I don't know what flat screen tv you have,but you must be aware of the coaxial input behind the TV.It could be analog input,digital input and OUTPUT!!
Anyway,if you connect your basic directv box to your digital input,it will not serve you any purpose to get HD channels and you don't have the HD directv box.The TV will not display digital channel for you because if you use coaxial input to TV,you should be under either channel 3 or 4 and be sure either channel had been saved under memory.In order to change channels,you will need to change it from your directv box.
JUST LIKE a VCR connect to TV.TV will be under channel 3 or 4,and you will change your channels from the VCR.Don't forget to scan all the channels from the VCR!
solutiondoct

I need a code to unlock my TV its a VS-5004R mitsubishi TV?

using the menu button on the t.v. set an alarm for 1 min in the future. have the t.v change to channel 00 or the input channel @ that time. turn off the t.v and wait until the alarm turns the t.v on.