Question about Denon AVR-3805 Receiver

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Denon 500 SD DVD player: Has a mind of its own

I have the Denon 500SD DVD player for the last 3 years. When it plays CD's,DVD's, MP3 etc - it does so beautifully. BUT !! It simply is the most finicky player I have ever used.
1. It takes atleast 5-6 attempts to run a CD/DVD. It either gets stuck in 'LOADING' forever, rattles noisily, or does not read ' NO DISC' or 'DISC ERR'. The DVD or CD does not matter. I could get a brand new DVD which it will play once and never play again.
2. The tray gets into fits of automatically ejecting. Whatever I do, it simply ejects the tray and closes by itsefl. Note it does so by itself

I was convinced it had a mind of its own, now I know it is possessed !!

Ok things I have done (a zillion times and with extreme care)
1. Used DVD head cleaner (both DVD's and liquids)
2. Cleaned the optical laser reader (blue lens)

It used to help in the past to restore the player to life for a few runs..only to get it back to the same state. I am gutted as to why I have put up with this for so long. I am stuck and pl help


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  • deepak_ravin Dec 02, 2008

    If I have to replace the Home cinema DVD player, what player specs should I be looking to match it with. I was going with the following (based on the current Denon speaker specs)

    - 5.1 Channel

    - 500W output with 100W per channel

    Is there anything else I need to keep in mind to ensure a perfect match.

  • deepak_ravin Dec 02, 2008

    I do not see any clear link with the heating of the unit. All the issues/ or subset of them will be present as soon as I switch on the unit after a long period (overnight rest) as well. Infact the chances that it will play/accept more DVD's/CD's increases with time.

  • deepak_ravin Dec 02, 2008

    Could you also help with how I can check/test if there is a defective 5V regulator ?



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This is probably an electrical problem because these are all the symptoms of it and since you say using a laser cleaner did not work with the loading problem after a while, there is probably a bad and shorty connection from the laser since you say it works a few times. Or the laser just might have "mood swings" since you say it plays new dvd's once and then you have problems with it.

Posted on Dec 02, 2008

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This sounds more like a voltage regulator or power supply problem that anything else. Is there any variation in behavior based upon heat? In other words, does the behavior change depending upon how long the unit is on? I would be looking for a bad 5V line inside the unit. Either the 5V regulator circuit is defective or the 5V is being loaded down by a bad filter cap or other component. Once the 5V drops below about 4.6V, the internal CPU will get confused and can cause any number of seemingly random symptoms.

Check that out and get back to me.


Posted on Dec 02, 2008


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