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Won't read blue ray dvd - Panasonic DMP-BD85 Blu-Ray Disc Player

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M lg bp145 quit playing blue rays but it will play dvds. Why?


Blue ray DVD's are read by a Blue violet LASER. I know that sounds pretty obvious but the colour blue is closer to the upper end of the spectrum and therefore has a shorter frequency and therefore you can generate and read much narrower data tracks. DVD's and CD use an older technology and use Red laser light which has a much wider and therefore less compact track size. So with a lower track density you get less information on a DVD.

The blue laser can be used to read both formats (and CD) but when reading the Blue ray disc the accuracy required is far greater to hit the track. Tracking errors caused by worn gears steppers and spindles can cause the Blue ray to miss the track but still have enough tolerance to read the much wider DVD/CD track.

The laser head isn't one laser, it actually produces two separate wavelengths, one for Blu ray discs and one for Red ray (DVD/CDs)

You can have a condition where the "blue-violet Laser diode fails but the red laser diode is still working. In this condition, it will exhibit exactly the effect you are experiencing.

Apr 14, 2015 | LG Televison & Video

1 Answer

My factory DVD player will except disc the ejects it


If I understand your rather cryptic post correctly...

This very well could be a Blue-Ray disk loaded into a
non-Blue-Ray capable DVD player. Your car player's capabilities MUST match the disc, otherwise, the disc won't play.

I've run into this very same problem with my home DVD players. Which both are non-Blue-Ray capable, but I was able to verify the Blue-Ray discs on my PC.

Jan 02, 2015 | Televison & Video

1 Answer

Blue ray with TSSTcorp&Prod_CDDVDW_SN-S083A


No, the Samsung SN SO83A does not include the laser that reads a Blue Ray disc. It can read and write DVDs, DVD-DL, and CDs. The Samsung SH-B083L/BSBP is an internal Blue Ray reader and DVD writer; however, it is not a slim optical drive and may not fit a laptop. There are some SATA slim blue ray drives from other manufacturers. You will need to check the size drive that will fit your case. A better option might be to get an external blue ray drive. (Note: any drive listed as OEM will not include Blu-ray playback software.)

I hope this helps.

Cindy Wells

Jan 04, 2013 | Samsung SN-S083A DVD±RW ±R DL / DVD-RAM...

1 Answer

DVD PLAYER WILL ONLY PLAY BLUE RAY NOT THE OTHERS DVDS


you must read your instruc, manual for to see what format the DVD blue ray accept. download the instr.manual from www.fitness.manualsonline.com or www.retrevo.com
Remember NOT all format are support form any DVD is doesnot matter if is DVD BLUE RAY or DVD conventional.

God bless you

Jul 11, 2012 | Samsung BD-P1400 Blu-Ray Player

1 Answer

My ps3 slim won't play games and blue ray disk but I can still play eve movies on it, please help want to try an fix if before nhl 12 hits the stores.


Hi, It sounds like there's an error with the laser that reads blu ray media as PS3 games and blu ray movies are both stored on blu ray disks which is read by a different type of laser then a dvd is read by. There's nothing you could do to fix that on your own, the only fix I've heard of is sending it in to Sony.

Aug 29, 2011 | Sony Playstation 3 (PS3) Console

1 Answer

Why won't my console play blu-ray movies


The Wii doesnt play Blue-Ray "BD" Movies, only the PS3 does, also the Wii doesn't play DVD's.
You can get the Wii to play DVD's by cracking the system by placing files on a SD Card, but your Wii will never play Blue-Ray movie because the system doesn't have the blue laser in the cd drive, sorry.

Have a nice day

Aug 20, 2011 | Nintendo Wii Console

1 Answer

WILL NOT PLAY DVD BUT WILL PLAY BLUE RAY AND CD


what's the brand of player? dvd player can read blue ray and cd....while cd player only read cd's and not work w/ dvd's....hope i can spell out to you the differences....nice day

Feb 13, 2011 | Panasonic Televison & Video

1 Answer

Player will not play blue ray discs


I'm having the same issues.....Anybody?

Oct 18, 2009 | Philips BDP7200/37 Blu-Ray Player

1 Answer

Acer aspire 6920 18.4 inch screen! I cant get blue ray dvds


According to the ACER Aspire 6920 specs, it does not have a Blue-ray player only DVD CD R/W drive. Therefore it cannot play blue-ray movie disks.
The specs of the DVD drive are as follows :-
Optical Storage
  • Type DVD±RW (±R DL) / DVD-RAM - Integrated
  • CD / DVD read speed 24x (CD) / 8x (DVD±R) / 6x (DVD±R DL)
  • CD / DVD write speed 16x (CD) / 8x (DVD±R) / 4x (DVD±R DL)
  • CD / DVD rewrite speed 16x (CD) / 6x (DVD-RW) / 8x (DVD+RW) / 5x (DVD-RAM)

Jul 24, 2009 | Acer Aspire 6920-6422 Notebook

1 Answer

Will not play blue ray or dvd


It's a new system glitch you may need to send it in or ake it back and exchange.

Feb 03, 2009 | Sony Playstation 3 (PS3) Console

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