Question about Denon Audio Players & Recorders
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Posted on May 08, 2018
SOURCE: Denon AVR-1601
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
Posted on Apr 08, 2008
SOURCE: I HAVE A DENON AVR
It is going into protect mode. It is a common problem, but is not an easy problem to fix. It will go into protect for 3 main reasons. I work at an authorized Denon service center and have repaired many of these models, so I know what I am telling you is correct.
The receiver has a blown channel. This will require the replacement of many parts. The output transistors, supply resistors, driver transistors, and a capacitor in the driver circuit of the affected channel. It is usually the channel that is located closest to the display board on the main heat sink.
A bad voltage regulator in the power supply. It has several voltage regulators all on their own small heat sinks. It is usually ref # IC101 or ref # IC102.
IC101 is a positive 15 volt regulator and IC102 is a negative 15 volt regulator. More often than not, it is the negative regulator that has gone bad.
The amplifier circuit has a 10 ohm resistor that supplies a high voltage to it and that resistor opens up and must be replaced. It is ref # R184. It is a 10 ohm 1 watt resistor.
Those are the 3 main reasons for your problem. It is not an easy unit to fix, but it is well worth the cost of a repair considering how much these receivers cost to purchase a new one. If you do not have the proper tools to fix this unit, please do yourself a favor and have a service center fix it for you. You will need a multimeter, soldering iron, solder, solder wick, and a # 2 phillips screwdriver. You will also need to isolate whcih of these 3 problems is causing the unit to go into protect. If you have a multimeter I can help you with it, but you still need the soldering equipment and must be skilled at using it.
Let me know if you require more help,
Posted on Oct 28, 2008
even if the wires are not touching they can still arch. make sure there is no bare wire showing ie. cannot see any unshielde speaker wires. id unplug then replug back in
Posted on May 18, 2009
SOURCE: problem denon avr 1910
most electrical units have a fuse inside,try taking cover off and checking for blown fuse,or,take it to radio repair shop.My Harmon Kardon stopped after 3 years,and the report said the unit that failed was quite a common problem for the modern multi channel amps,quite cheap to fix..All my tips are free
Posted on Jul 04, 2010
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