Ive lost all sound on my denon avr 2802. ive checked and there are no blown fuses?

SOURCE: denon avr 5800

I can help you solve this problem. However you must describe to me which fuse you have replaced. Is it the fuse on the power line or is it a fuse in the speaker line (which I highly doubt). usually this type of amplifier uses two technologies. One is transistors the second is integrated chips. This is in regard to the output stages. I assumed you speaker cables shorted each other while the volume was set at a high level with music playing. Anyway if you are willing I am able to help.

SOURCE: Lost audio for no apparent reason

Try unplugging your HDMI cable from the AVR I would like to see if your AVR is trying to use HDMI out instead of the composite. Next try plugging each device directly into your television, this will isolate the issue and tell us for sure whether or not it's the AVR.

SOURCE: Also problem with Denon AVR-2802

If DIGITAL sign on the display blink, it mean the DSP board is defective. probably the DSP itself

SOURCE: Denon AVR 2802 - Unit Turning Off

If DIGITAL sign blink, this mean DSP board is defective. It will cut the sound on the AMP section. DSp is maybe defective.

SOURCE: DENON AVR 2802 (NO SOUND)

If "Digital" sign blink on front panel, it means DSP do no start properly. If DSP do not start, main UC mute audio. Change IC, AT49LV002-70TC (IC 817 ) at DSP board (Denon P/N: 262 3010 006).