From: ohg...@gmail.com   
      
   On Sunday, November 20, 2022 at 1:40:29 AM UTC-5, Bob F wrote:   
   > On 11/7/2022 12:47 PM, Bob F wrote:    
   > > Samsung BD-P3600 was intermittent for a while on DVDs but now always    
   > > shows "The disc can not be played" when a DVD is loaded. CD's and Blu    
   > > Ray disks work perfectly.    
   > >    
   > > I tried holding "PLAY" or "PAUSE" for 8 seconds to reset to factory    
   > > settings with no effect. (Does nothing)    
   > >    
   > > Any ideas about getting it working would be appreciated.   
   > Update:    
   >    
   > I just received a replacement laser unit from Alibaba in China for $15.    
   > Hopefully, I can just remove the old one and replace it and it will    
   > work. Or will the replacement still need calibration adjustments that I    
   > still have found no service manual for.    
   >    
   > The order was made 11/8, promised for Dec 2, and receive Nov 19. That    
   > surprised me.   
      
   It's been *many* years since I played with DVD players (when they became   
   uneconomical to repair), but I recall many lasers being shipped with a solder   
   blob jumper on the ribbon cable to prevent static damage.  The blob had to be   
   removed after the laser    
   was installed.  If the laser doesn't work at all, see if there's a blob jumper   
   on the ribbon.  There also might be a trimmer adjustment on the kapton ribbon,   
   but I wouldn't try adjusting that until every option is exhausted.  I recall   
   tweaking that a bit    
   as the laser got older to improve readability, but pushing it too high would   
   also damage the laser diode IIRC.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)