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Re: denon avr 885 it automaticallyshuts off when i try to...
Its possible that the Receiver is going into protection mode and possible some speaker cable might have touched the body or with each other. Remove all inputs and outputs and then restart the receiver. If it starts then you are lucky. Connect all cable and wiring properly and ensure that they do not touch each other. You might have to reset the microprocessor also.
If the problem persist then let me know to further the trobleshooting.
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Bad button on the remote? or static discharge from being touched can cause all kinds of strange problems. I would reset the micro processor back to default settings.. RESET PROCEDURE 1. PUSH MAIN POWER SWITCH OFF 2. WHILE HOLDING THE FOLLOWING KEYS DOWN, PUSH MAIN POWER SWITCH ON AVR-2105 or AVR-885 Front Speaker A and B (2 keys) Let the front panel blink 3 or 4 times and then release the keys (buttons) You will have to do your set up again i.e. speaker size, assign inputs, FM presets etc.
Are you getting a standby light at all? Is it flashing? Do you here a click when you plug the unit in? If the answer is no to all of these then you blew a fuse. If you do have soome sort of standby light, then your set is in protect mode. More than likely for a blown channel. If no lights, but you ar egetting a click, you could have a bad transformer. Use a DVM and see if it is open or not. Good luck
after unit goes in STBY mode, hold SPK A, B buttons togather, press "On/Off" button, until you see front panel display all lights blink for 2 seconds. unit will function in digial/ anology auto mode, but digital perioity
Your result indicates the unit is not passing its power up self test. The first thing to try would be to remove all connections to the unit and try to power up. If it still mis-behaves, the unit has an internal problem best left to pros unless you're pretty good digging through circuitry. If it comes up stable, then reconnect things one at a time until the issue occurs again. Detach the offending connection and look for issues in the cables or the connected unit.
While working it stops and flashes red approximately
2 seconds interval Causes Protection circuit is activated
depending on the temperature of the surroundings Remedy Switch off the power supply and power on
after the temperature have reduced. While working it stops and flashes red approximately
0.5 seconds interval Causes 1.Using speakers having less impedance
than the specified. 2.If speaker core wire touch each other Protection
circuit is activated Even applying power red flashes 0.5
seconds interval Cause Amplifier circuit has failed Remedy Switch off the power and contact denon
Usually its the power output stage . You can visibly check it if theres a burned resistor on the output amplifier. On the base of the Power output transistor if the voltage is the same as the collector pin it will indicate a shorted power amplifier circuit.
Try doing a factory reset by turning off main power switch.hold down speaker a and b buttons while turning on main power switch ,display will flash 3 time s then release buttons,this then returns unit to factory default settings.
Front panel button engaged for 5 or 7 channel operation? Also check front panel rear surround speakers button is engaged. Should get you back to 7.1 unless you have changed the rear surround speaker setup for a 2nd zone, also be sure you have a 7.1 DSP setting enabled.