My Sonance 2100 has no output

The answer depends on if you have external speaker level volume controls (usually in-wall type) between the amp and the speakers.
If yes, hook the RCA cables from the 275 inputs to the Denon's Tape Output. With speaker level volume controls set to max, use the level controls on the front of the 275 to set max level desired in each room.
If no, then you must use a line level volume control between the Tape Output and the 275.

I HAVE A 2100 NAVIGON GPS SCREEN WONT COME ON TRYED CHARGEING IT THE ORANGE LITE COMES ON /WONT CHANGE TO GREEN ALSO TRYED TO RESET NOTHING DO YOU HAVE ANY IDEAS WHAT ISHOULD DO NEXT .

Red - Power - Connect to Acc on ignition or battery positive. Connected to Battery the unit will not power down when the ignition is switched off
Yellow - Memory back-up. Connect to battery positive
Black - Connect to vehicle earth or battery negative
Blue/white - Used to power up remote power amplifier or power antenna. Do not draw more than 300mA at 12V from this line
White + White/black - Front left channel
Grey + Grey/Black - Front right channel
Green + Green/black - Rear left channel
Violet + Violet/Black - Rear right channel
Use the wire with the black line in it for negative on any channel.
Do not earth any speaker wires.
RCA output jacks are used to send the output from the unit to an amplifier if you have one and cannot be used to power a speaker.

The red light will stay on without speakers connected.

Make sure your speakers are good and try again

If it still fails then there's a power supply failure internally

try this link it might help you get start again. laptop Won Start Up Google Search

Try using your headphone, if the sound comes out, then the problem came from power output

1. Check that the trimpots on the front panel are all the way up.
2. The speaker relay on the Amp PCB may be bad. Over time the fingers can warp and won't make contact any longer.

The Sonamp 275 has Signal LEDs on the front panel, above the Volume pots. If signal is present at the RCA inputs, the Signal LEDs will be blinking.
Most likely, there isn't any line level audio signal coming from the receiver. Hook RCAs to Tape Output or MD output and check system using the Tuner which is an analog signal.

please check first your input source and confirm it is ok.-check speaker button is pressed(if you have one)-speaker cables are connected firmly-from amp side and speaker side-check mute button(also if you have one)is not pressed.-make reset for your system(power off and on).
if all above can not fix your problem you have to ask for help from service center.

Hi how did you go, still happy to help.

regards
robotek