Question about Denon AVR-3300 Receiver

2 Answers

Reciever no sound till warms up 10-15 mins.

I have had zero problems with this reciever till lately. I have to leave it on or it takes a long time to warmup (no sound till it does). Now it makes static noises which will sometimes go away if I change to direct or stereo, hit or miss. the unit is on the same power supply as the sat. reciever, DVD, VHS they all are fine. any help is appreciated.

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  • Dicklb Nov 18, 2007

    I have a very similar problem. My Denon AVR 3300 produces a LOT of static noise during the warm up period of from 10-20 minutes. This is deffinitelly temperature related as its barely noticable in the summer. The colder the longer I hear the static and the louder it is. After 20 minutes it runs perfectly.

  • ngiann Jan 09, 2008

    Last Summer I had the same problem myself. Also i had not OSD video output on my TV until it was warm enough. After may hours of troubleshooting, and examination of the service manual i found 2 faulty devices IC903 (7805 +5V Regulator) & IC904 (7806 +6V Regulator).
    These 2 devices look Ok if you check them without load, but drop their voltage under load, so in the first time i thought they were ok, and put them back, but after excluding one by one case, I finally test them with load and then I saw their misbehavior.
    The voltages to check are: In Regulator Unit (1U-3201-1)
    a) the +5V[D3] (mine was 3.5V and gradualy rised to 4.5V)
    b) the V6V (_+VVideo) must be +6.8V (mine was +3v only)

    You better check the outputs of all 78xx regulators just to be sure.

    Some days ago mine started to make noises and sound cutouts and it seems that this time must be a 7812 regulator that has only +10.1V output.

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Last Summer I had the same problem myself. Also i had not OSD video output on my TV until it was warm enough. After may hours of troubleshooting, and examination of the service manual i found 2 faulty devices IC903 (7805 +5V Regulator) & IC904 (7806 +6V Regulator).
These 2 devices look Ok if you check them without load, but drop their voltage under load, so in the first time i thought they were ok, and put them back, but after excluding one by one case, I finally test them with load and then I saw their misbehavior.
The voltages to check are: In Regulator Unit (1U-3201-1)
a) the +5V[D3] (mine was 3.5V and gradualy rised to 4.5V)
b) the V6V (_+VVideo) must be +6.8V (mine was +3v only)

You better check the outputs of all 78xx regulators just to be sure.

Some days ago mine started to make noises and sound cutouts and it seems that this time must be a 7812 regulator that has only +10.1V output.

Posted on Jan 09, 2008

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It could be a bad capacitor that is causing the unit to act that way.  I'd suggest taking in to a local repair shop to get serviced.  Right now my Denon AVR-3200 has this problem with the left channel from time to time. (I plan on getting this checked out as soon as I have time and will post my results as soon as I do).
Also, the amplifier itself could be on the way out; I've had this issue with other amplifiers before they completely died on me. 

Posted on Jan 08, 2008

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