Channel 2, 3, 4, and five do not have volume the rest of the channels have volume.

If the input sources for Channels 1 & 2 are the same, adjust the input Trims to get the same output. Then use the R1 Remote.
L1 Model Bose L1 Encyclopedia FAQ Wiki

Check that SAP sound is not on.

On your remote control (with tv off)
1. press Display, channel 5, Volume Up and then Power
this brings up the service mode (you will see some green text on your screen)
2. Press channel 2 to scroll through options until you see "Micro" in the upper left of your screen
(channel 2 cycles up through the options, channel 5 cycles down)
3. Press channel 1 to scroll through suboptions until you see "DIOF" appear under "Micro"
(channel 1 cycles up through the suboptions, channel 4 cycles down)
4. Press channel six until the default value (12:60) changes to 12:40
(channel 3 increases the value, channel 6 decreases the value)
5. Once the value has been changed to 12:40, press Muting and you should see red text in the upper right hand corner that says "Write"
6. Simply turn the power off and back on for the change to take effect. Your volume problems should now be fixed.

HI DUDE TRY TO CONNECT ONLY 2 PC OF UR 6x9 AT FRONT CHANNEL TRY IT OUT COZ IT MAYBE THE DONT HAVE MUCH POWER TO HIT VOLUME OR ELSE TAKE OUT UR SUB CONNECT TO FRONT CHANNEL OR CHECK UR SUB VOLUME .,...

Be sure the sound source has a center channel output ie. not a 2 channel source only, try the test tone setup for 5 or 6 channel balance, if no sound from the center channel still then it is looking like maybe the center channel is blown.

Hi lisadean767,
It is possible that without realizing, your TV is programmed to receive SAP or Second Audio Program audio. When this happens, your TV responds like this: when SAP is not being broadcast, you'll receive regular program audio. However, when the SAP audio is sent along with the regular, (English) program audio, your TV will automatically switch to the SAP channel. You'll know your TV is programmed to receive SAP because you'll hear the commercials in English and any other program in English if the SAP is not being sent. 

Check and see if your tv is setup for SAP. Let me know if this helps and if I can be of further assistance, Please rate this solution.
Lone99star

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my sony trinitron is blinking six blinks and I cannot turn it on, please help

Press tv on sky remote then press help ,channel list appears . goto tv set use onset channel change button to scroll to hd channel .press volume up button onset to select.

You can check if channel 2 is blown by switching around your RCA plugs. If you are using the speaker wires as high power inputs you can change them. I.E. swap the left channel with the right one. I assume you checked the gain control on the amp. If channel 2 works with channel 3's inputs then its your head unit or the wiring. If you are lazy take the amp to a car audio store and ask them to bench test it for you. Hack

Make sure that the channels that you are not getting audio on are not HD or high definition channels. Also make sure that they are not digital channels. There is absolutely nothing wrong with your TV, so rest assured it is correctable iether in the menu or you may want to perform another auto search for your tuner.