Question about Sony RDR-GX300 DVD Recorder

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Sony Dvd recorder/player drive needs replacing

The drive, model DW-U15A, on my Sony RDR GX300 needs to be replaced. I cannot find another. Do other brand DVD/CD drives interchange with Sony as long as the connections and dimensions are the same? The drive appears to be identical to my computer DVD drive unit.
Thanks for helping.

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  • capmerc Dec 05, 2008

    Same problem; about a year ago, the player began "not recognizing" discs it won't play or record any DVD's (though it still plays CD's). This week, I had an on-line chat with Sony service. The tech I chatted with said I "could try" swapping out the drive for a Sony DRU840a multi-format internal DVD recorder. Once I get all the specs, if it looks like a match for the DW-u15a (or if I find another compatible drive), I'll post the results here.

  • Anonymous Dec 29, 2008

    Has been a good machine up until a month ago when I kept getting "disc error" messages with increasing frequency. Now it won't read any discs. Can the disc drive be replaced?

  • Andy Chips Feb 08, 2009

    I have exactly the same problem as you guys, but with a HX900. It uses the same drive as the 300. I've tried swapping it out with a Sony DRU800A and it just won't work. It's a special firmware on the drive's controller apparently.

  • Anonymous Feb 11, 2009

    Well, here's another GX300 owner with the same problem. Slowly it stopped recognizing disks -- now it won't see any DVD-Rs. Shame there isn't a replacement drive. I buy Panasonic now. Not that Pana is perfect, but so far their stuff is doing fine. IF anyone gets another drive to work in the 300 LET US KNOW!!

  • afm_380 Mar 27, 2009

    Same issue ... first the unit wouldn't read retail discs but would play copies fine ... then it stopped reading EVERYTHING. Load ... Load ... Load ... Error. I decided give the 840 suggestion a try. It take a little modification to get it to fit ... but all you receive for the trouble is a cycle from Welcome to Close ... nothing else. Hopefully there might be a firmware mod to get it to work, but it's not looking promising. Unfortunately, I WILL NOT be purchasing another Sony unit ... no matter how good the reviews.



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I have the perfect solution never ever BUY ANYTHING with the sony name on it.

Posted on Feb 21, 2010


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When I burn a DVD (R- or R+) on a Sony RDR-GX300 it burns the DVD which plays on that unit only. If I try to play the DVD burned on Sony RDR-GX300 on any other brand or any other Sony DVD player or even on...

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The drive, model DW-U15A, on my Sony RX900 needs to be replaced. I cannot find another.

Finding a replacement is next to impossible. However, you may be able to repair this drive if the only fault is that it will not recognise disks.
WARNING: The following instructions involve opening your recorder and being exposed to dangerous voltages. make sure you unplug the unit from the mains supply before opening the unit. DO NOT PLUG INTO THE MAINS WITH THE COVER REMOVED.

1. Eject the disk tray and then switch off the unit at the mains socket. Remove the plug from the socket for safety.
2. Unclip the front bezel from the disk tray. Push the tray back in.
3. Remove the top cover of the unit. Remove the front plastic bezel from the unit (should be clipped on).
4. I am not familiar with your particular model but you will probably need to loosen one or more boards inside to gain access to the actual DVD unit.
5. Remove the DW-U15A. Take the metal casing off the DW-U15A.
6. Slide the laser carriage back, away from the center. You will notice that one side if the carriage is firmly attached to the slide rail while the other side can be wobbled up and down on it's rail. There should be very little actual wobble. Unfortunately, the grub screw used on the carriage at this point is made from plastic instead of metal. So over a period of time this grub screw gets worn down and eventually the carriage leans too far over for the laser to bounce off the disk correctly.
7. You need to adjust the white grub screw to adjust the angle of the carriage (and therefore the laser). You will need a small ALLEN KEY (HEX key) or you can try a small flat blade screwdriver. The grub screw is locked by a small amount of coloured resin which will need to be broken.
8. The adjustment of the grub screw will basically be a case of trial and error. Turn the grub screw about a quarter of a turn CLOCKWISE (i.e. it should move down to lift the carriage up) and then reconnect to the main unit. put the cover back onto the unit and plug into the mains. Test the drive.
9. If it does not work then repeat step 8 until the unit reads the DVD.
10. You may need to fine tune the adjustment by trying a range of pre-recorded and home-grown DVDs.
11. If it still does not work after two or three full turns of the grub screw then either the laser unit is too dirty or the laser has failed, in which case you definitely need a replacement drive. Try finding a working DRU-510A and swap the control boards.

Sep 14, 2010 | Sony RDR-GX300 DVD Recorder

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When I put in a new a recordable dvd disc in my RDR GX 300 it will format & then it says this picture can not be recorded, even though I have previously recorded the program on my DVR from Directv. I...


There are three things you can do that will eventually give you a working solution. Depending on the level of problem. Start with 1 progress to 3 until it works.
1. Use a cleaning disc. (one that use an alcohol based liquid)

2. If the cleaning disc does not solve it, you can use an ear bud, with some iso-propyl alcohol to clean the DVD lens on the drive directly. (you have to open the player and the drive)

3. The guaranteed working solution is to replace the DVD drive inside the player. This is quite a simple process, as most players use a standard IDE DVD-ROM or DVD writer.

You simply remove the face plate, (apply power to the drive, and press eject first) the tray will open. Unclip the tray face, and then with the tray open you can unclip the plastic face plate too.

Remove the old drive, and fit the new drive by reversing the removal procedure.

Once everything is assembled you should be able to watch DVD's again. If you can't find a cheap DVD drive locally, try ebay.

I have done this on over 50 players for my clients in the past. I use LG IDE DVD roms and IDE DVD writers for the DVD recorders, irrespective of brand.

Let me know how it goes.

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Just guessing but I suspect Sony wrote customer firmware for the drive. Best bet is to try and get a Sony drive.

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Dvd recorder

No, it is built in.However, AnyDVD software can correct that on a PC, and you can create a new copy from the original.

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How come I can't read the "solution" ? ? ?

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Sony RDR-GX300 DVD Recorder's called firmware, and its installed when built, or repaired..usually the chips are flashed with new information, when needed..

Mar 17, 2008 | Sony RDR-GX300 DVD Recorder

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