Why wont power come back on the unit all the fuses are good

It has to have one---follow the power cord inside the unit--if fuse is good consider taking it to a shop for an estimate.

check speaker conections. disconnect all the speaker wires and use one speaker that you know that works and connect it to each channel one at a time. most surround sound stereos will not go into surround mode unless all the speakers are connected so make sure stereo is in 2 channel mode to start testing. check all fuses sometimes amp fuse is seperate from power circuit and denon uses relays in 99% of thier units.

Check power cord connection.

You need to get more details. What component has failed that makes them believe that a surge caused the problem. There is usually a thermal fuse inside of the main power transformer that CAN be effected by power surges. WIthout more details, I really can't rpovide any ammunition for your claim. Please request exact details from the servicer.

Thanks,
Dan

Try this, turn off the unit and remove the AC power cord from the electrical outlet, Hold the AUTO button and PCM button and plug the unit back into the electrical outlet, if the display starts flashing with 1 second intervals then release the 2 buttons, this initialized the microprocessor

time to reset the microprocessor. See page 87 in manual.
1) switch off the unit using the main unit's power operation (small power button)
2) hold the PURE DIRECT button and DIRECT button at same time and turn the main unit's power operation on.
3) wait for entire display to flash in 1 second intervals

now the speakers need to be set up again but zone 2 will be working. i suspect a power surge causes the microprocesser to be corrupted. i put a power surge protector and have not had problems (lately).

Denon AVR-1403/483One of the speakers when connected trips the units power off.
Disconnected it and it works OK without that channel. Connected a different speaker and wire to that channel and it does the same, trips power off. It's acting like a when two wires are shorted. This is not the case as I have tried different wires and speaker. Not sure whats going on. Presently running system without that channel. Hope someone has an idea.

You may be able to unplug the unit. Then turn it back on while pressing two buttons on the front of the unit. You will have to find out which two buttons they are, it can't just be any two. What you will be doing to the unit is resetting the micoprossing of the unit. When you do this the unit will flash, reset itself, you the release the buttons and your good as new. I have done this with a couple different reciever and it is a easy fix.

This is a very common problem with denon receivers of the 2001-2-3 vintage. On almost every one, there are 4 little "surge" resistors in the power supply. These werent quite robust enough from the factory and one day would just burn open for no reason. Well, actually there is a reason, the "surge" that happens every time you power the unit up eventually weakens the resistors and then they pop. You need to take this to a denon service shop as I GUARANTEE they have seen this before. They need to check resistors in the picture, locarde above the **** rectangular connector. Resistors numbers R141, 142, 148, 149: These resistors when measured, should be less than 10 ohms each. If they are more, then they are blown. If they are blown, then have the shop check the channels for blown output transistors. If the outputs are OK, then these resistors should be replaced with 1 ohm 1/2 watt metal -film flameproof resistors. You might need to be prepared for a large bill, because the entire unit must come apart to replace the resistors, however, just checking them takes only about 10 minutes... Good luck and don't try this at home. Rob

no it will be damged need hi end monster power strip hd700 or better off ebay that will go 1st and alarm will sound on it