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Disc Error I have a Samsung HT-THX25 home theatre system. When trying to play back a dvd the dvd tries to load but then i get the message UNKNOWN DISC. Any ideas ?. I have tried a cleaning disc without success. Can i reset to factory settings to see if this helps. Thankyou in advance. Chris

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5 Suggested Answers

SOURCE: Bad Disc

First determine where the problem lies. This can be done by analyzing what is happening. Is the disc spinning. Is it spinning erratically? If the disc is not spinning, the spin motor is probably defective. But sometimes you can be fooled, if the laser does not detect information of the disc, it will not issue a start spin motor command. If you can get the unit to work with the door open by defeating the switches,(Do not under any circumstances look directly into the laser)If you see the laser then the spin motor is bad, In either case the unit is is probably cheaper to replace than to repair. Scrivitron

Posted on Jun 20, 2007

  • 2 Answers

SOURCE: Unknown disc error

In my dvdr630vr plays only audio cd`s. Same problem?

Posted on Feb 01, 2008

  • 1 Answer

SOURCE: DVD player recorder won't read or play any disc

This just worked for me. Don't know how long it will last though. I found it on this webpage
http://forum.ecoustics.com/bbs/messages/15118/130292.html

To do a reset:
On the remote control press the SETUP button,
Press the right key on the remote 3 times,
The Preference page will show up,
Press the down arrow five time to highlight
"default", hit right arrow to highlight "reset"
Press enter to reset. Turn off/on machine, etc.

Posted on Feb 14, 2008

  • 1 Answer

SOURCE: Incompatible Disc in Sharp BD-HP21X Blu-Ray Disc Player

I had the exact same problem as you did... I bought the Sharp Aquos 42D85X which came with Sharp BD-HP21X Blu-ray Disc player. could not get brand new blu-ray movies to play and i found it froze everytime after 10 secs. I phoned sharp who basically were no help watsoever! I then went and returned my blu-ray movies back to the store thinking it was a problem with the discs.. The people there were extremely nice and since they had a display model of the BD-HP21X instore they offered to test the movie on it to veroify whether it was the blu-ray player was the problem or not. Turns out its a fault with all of the BD-HP21X models. So we then ended up returning it back to the store we bought it and exchanged it with the older model (BD-HP20X). I now have no problems playing blu-ray movies. Although another suggestion is to perhaps download the lastest firmware update & see if that resolves your issues.

Posted on Mar 16, 2009

  • 1 Answer

SOURCE: LG HDD DVD recorder RH7521W is not able to read

Mine had a similar problem. I assumed there might be some dust on the laser. I used an air compressor and pointed it at the DVD slot as it was opening and closing to blow some air around inside the unit (and hopefully dislodge any dust). It worked. The discs that would not play before did play after. I didn't have the air compressor nozzle too close to the opening as I didn't want to dislodge anything I wasn't supposed to. If it was dust on the laser, you might be able to clean it in other ways, such as removing the cover and using a cotton tip (take power off first!). That would have been my approach if I didn't have an air compressor.

Posted on Feb 02, 2010

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