Question about Samsung DVD-HR720 DVD Recorder

4 Answers

HR 720 does not burn to DVR -R media

My HR 720 does not burn to any DVD -R media. Now it only accepts DVD -RW Sony 1x-2x compatible. If I insert DVD -R ( used Imation 16x, Sony 1-16x, TDK 1-16x, Philips1-16x, also Benq, Samsung, Verbatim...) - either a message "Cannot play or burn this disc" appears, or if not , when burning starts, message "Cannot copy because of error detection" appears. Sometimes it burned to Philips DVD -R 1-16x, but there was many defects on the DVD and no player nor computer was able to play it. Also from
-RW it currently accepts only Sony -RW 1-2x mentioned above and sometimes Philips -RW 1-2x. Other - for example TDK-RW 2-4x - when formatting I got message "Cannot format because of error detection". I have to say, that all the media, that were "unaccepted" by this recorder were used then for burning on computer without any problems a also they are playable also on the HR720. I used the cleaning disc - nothing changed.
Has anybody such experience or even an advice, what to do?

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  • 3 more comments 
  • flannk May 10, 2008

    I have exactly the same problem only I haven't tried quite as many varying media types.

  • mcinp May 26, 2008

    i have the same problem.

  • mysus Aug 17, 2008

    Hello there,



    it seems I have found a solution for this problem. I decided for this step, as the recorder for a few days did not accept any media, including "working" Sonys, no burn was available.

    The only thing I was able to try was to increase intensity of the laser. And after that - yeeeaaahh, now it accepts all Sonys, but also TDK-RW (never accepted before), also TDK -R. That's all I have tried till now and it works!

    So how to do that?

    1.Uncover the device

    2.Uncover the DVD-part in the middle of the device (5screws, then slide the cover to back and remove it

    3.close to the optic there are 2 small adjustable resistors (potentiometers they look like small screws) - one marked as DVD, the other as CD (white letters on the PCB)

    4.turn the DVD marked potentiometer about 30-45degrees clockwise.....that's all, put the covers back and try to format, burn.... In my case till now no error, no system error or any other problem that had occured before.

    I suppose, this can help with similar problems in this forum (burned media not readable in other players etc.) If it does not help, simply turn back the potentiometer to its previous position)

    Good luck :)

  • privateselling Oct 12, 2011

    Hello, I would like to send you a picture of the print of a HR738 since I do not 'find' the 2 screws you mentioned. Could you send me your email adress to 'alfredb@skynet.be'?
    Thank you, Alfred

  • antonio541
    antonio541 Oct 31, 2012

    thanks, mysub! it worked for my HDR721

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Thanks so much, a slight turn of this tiny screw solved it for me too.

Posted on Apr 08, 2012

  • xepetas Oct 15, 2012

    can you please tell me whitch screw you turned ? i cannot find details about the solution . thanks

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To the guy who replied mentioning adjusting the potentiometers..YOU ARE A STAR...Just did this on a similar model..samsung hr 733...now reads all media and burns perfectly..Backed the screw off a tiny bit and its working like a dream...Many thanks mate..

Posted on Jul 25, 2009

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I agree. My HR720 DVD not only would not burn discs but also had trouble playing them. I was ready for throwing it in the bin!
I gave the solution a try as mentioned by mysus. Works fine now. Thanks a lot for the info mysus.

Posted on Sep 22, 2008

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Hallo everybody,

this guy "mysus" is a genius! I have had above problem on a Samsung HR-725 (160 Gb Version of the HR-720) now for approx. 1 year. I´ve called the Samsung Hotline and tried other dealers - nothing worked. Today I came accross this help and tried it out immediately - and it works perfectly. However, you do need to know a little about PCBs and electronics.
I used a variety of different -R DVDs and they all seem to work now. Many thanks once again for this fantastic link.

Posted on Aug 28, 2008

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