When i plug in to an amp i have no output

Getting Started
1. Turn all power off on the Powerpod mixer. To ensure this, the AC cable should not be connected to the unit. 2. All faders and level controls should be set at the lowest level to ensure no sound is inadvertently sent through the outputs when the device is switched on. All levels should be altered to acceptable degrees after the device is turned on. 3. Plug all necessary instruments and equipment into the device's various inputs as required. This may include line signal devices, as well as microphones and/or guitars, keyboards, etc. 4. Plug any necessary equipment into the device's various outputs. This could include speakers, monitors, signal processors, and/ or recording devices. NB. No devices other than speakers should be connected to the power amp outputs. Plugging inappropriate devices into the mixer will likely cause damage to the device. Also, guitar cables should not be used to connect amplifiers to speakers. 5. Plug the supplied AC cable into the AC inlet on the back of the device, ensuring local voltage level is identical to that selected by the Voltage Selector on the rear of your device. 6. Plug the supplied AC cable into a power outlet of a suitable voltage. 7. Turn the power switch on.

You have two monitor outputs, each controlled by a fader. Plug the amp(s) you will be using to power the monitors into these, connect the monitor speakers to the amp(s) and you're set up and ready

Need more info, how many main speakers and monitor speakers are you trying to plug into the unit?

MAKE SURE the cables you plug into 1/4 inch mains are TRS plugs, and not mono cables (TS). The main output 1/4 inch jacks are TRS balanced outputs and if you plug mono (TS) cables that shorts out the ring connector reducing the power by 6 Db. USE ONLY TRS balanced cables for interconnects !!!! Also read my tip on Fixya regarding PMP mixers. If you use 1/4 inch SPEAKER cables or adapters, if you short the SLEEVE of channel A output to ground you can pop the channel A amp. The TIP of channel B is the hot BUT the SLEEVE of channel A is the HOT. The ttip I posted explains why this is and it isn't mention in the Behringer documentation.

If the output module has a TDA7293 chip/stick on it, replace it. Use thermal compound like they did and observe any insulating washers used. Clean board and check for shorts after replacing.

Get them at about $6:

http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=497-2170-5-ND

and

http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=497-8865-5-ND

Depending on how the leads are bent... first one leads go down (V suffix), second they are bent horizontally(HS suffix).

If the guitar is active and the battery is dead you will not get any sound. If the output jack or some of the controlls have been twisted and may have broken the connections on the inside.

The MON faders ONLY control the output to the MON L and MON R jacks, NOT the split use of MAIN/MON outputs. You MIGHT try varying the MONO fader and see if it varies the MON part of the split output.
Best to use the unit as MAIN L and R to main speakers and use a stereo amp or POWERED monitors driven from the MON L and R jacks. With this, the MON faders will control your monitors as you would like them to.
ALSO make sure ALL equipment connected together is powered from teh same recepacle power system. Powering interconnected equipment from receptacles at opposite ends of the room is asking for damage due to ground bounce and faults.
PLEASE read my tip on here about a HAZARD of speaker polarity if you use Speakon to 1/4 inch cables.

TRY A DIFFERENT PLUGGING, OR TAKE IT BACK TO WHERE YOU BOUGHT IT. ESPECIALLY IF YOU KNOW THAT THIS PROBLEM HAS BEEN A REGULAR OCCURANCE.

Each mic channel is MONO. You could use a 1/8 stereo splitter cable into two mic channels and then PAN them opposite to retain the stereo.

You can also use a splitter cable into the 1/4 inch stereo inputs on the mixer. The 1/8 inch plug must be a stereo plug that then splits to two RCA plugs or two 1/4 inch plugs.

Note that the manual specifies that the Tape/CD out is merely paralleled off the mains out. This means that your main fader controls the level to the CD/TAPE output... which may mean your main output has to be too loud to get adequate output from the CD/TAPE outs to be effective. This would require balancing the levels into your external amp better.

You don't specify which model Phonic mixer in question.
Is it a powered mixer ? And are you plugging your speakers into the speaker outputs ? If it's not a powered mixer and you're plugging speakers into the Line Outputs, you're not using a power amplifier between the line outputs and your speakers - this won't work.
If it is a powered mixer and you are plugging speakers into the speaker output connectors and still getting little or no sound, check your speaker cables and the speakers themselves by plugging them into known good amps.