The CS4000Watts amplifier I recently purchased, shows signal input on the left side only(LED blue),This channel Overheats then the amplifier trips when its at it's best performance. Rem the output is at 2 ohms.

Select the input channel for your Fire TV - Turn on your TV and select the input channel for the HDMI port you used to connect your Fire TV. You should then see a loading screen with the Amazon Fire TV logo 4.

Check your input or output cables might be dirty I had the same problem
and 1 of my output wire was dirty so i sprayed tha electric cleaner and its all good now
Aloha

Determine where in the mixer's signal path to connect the unit. Your options are:
1. One or two individual microphone channels via the mixer's CHANNEL INSERT in/out jacks.
2. The monitor mix output via the mixer's MONITOR OUT jacks.
3. The main mix output via the mixer's MAIN OUT jacks.

2 Connect a balanced cable with the appropriate connectors from CHANNEL INSERT OUT jacks on the desired mixer channel to INPUT RIGHT or LEFT on the Feedback Destroyer's back panel for individual microphone channels. Connect a balanced cable with the appropriate connectors from the OUTPUT RIGHT or LEFT jacks on the Feedback Destroyer's back panel to that mixer channel's CHANNEL INSERT IN jack.

3 Connect a balanced cable with the appropriate connectors from the mixer's MONITOR OUT jacks to the INPUT RIGHT or LEFT jacks on the Feedback Destroyer's back panel for the monitor signal path. Connect a balanced cable with the appropriate connectors from the OUTPUT RIGHT or LEFT jacks on the Feedback Destroyer's back panel to the monitor amplifier INPUT jack or amplified monitor speaker INPUT jacks.

4 Connect a balanced cable with the appropriate connectors from the mixer's MAIN OUT jacks to the INPUT RIGHT or LEFT jacks on the Feedback Destroyer's back panel for the main mix (FOH) signal path. Connect a balanced cable with the appropriate connectors from the OUTPUT RIGHT or LEFT jacks on the Feedback Destroyer's back panel to the main amplifier INPUT jack or amplified house speaker INPUT jacks.

switch input cables and try this will confirm if the amp has a problem or the input signal

If you are trying to get 'off the air' signals then you must scan for the new digital channels in your reception area (this info should be in your owners manual). If scanning doesn't find any signals, you might have to add a VHF/UHF line amplifier(s) between your antenna and the TV set or improve your outside antenna or the cable leading from it to your set. You might have to resort to subscribing to HD cable or satellite TV.

Stereo amplifier = two channel..A and B.
1. Make sure that your stereo audio mixer has an output from LEFT going to amp channel A and output RIGHT going to channel B.
2. Check that the "Pan" control on your audio mixer is set to the 12:00 position.
3. Inputs to mixer...make sure the music/microphone input channels "Pan" controls are also set for 12:00 as well.

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.

Press the "INPUT" button and make sure "TV" is highlighted.

The RF input is the correct one for a cable signal. The other sources use the RCA and other ports which you can connect to other devices, like DVD or VCR players.

If the humm noise only happens when you're on the TV channel then it's likely just the station. Try changing the channel and see if that helps, and make sure the coax is screwed in all the way. Also make sure the other end, if connected to a VCR or other stuff, is tightly attached. If you share cable with many other people and the signal has snow (white spots on the TV), then you may need to buy an RF signal amplifier to reduce the noise.

Source changes the input (RCA versus coaxial versus component inputs), change the channel for different channels..

check all op amps for correct voltage swing +-should be equal,test output of op amps no voltage should be present, use chasis gnd as tester neg.check voltage regulation especially 12v or 15v +-.note some amps show unequal led indications when only 1 channel connected to a load.I will try to get some more info on this specific amp because i don't know this circuit well,keep in touch as you update though.