home bbs files messages ]

Forums before death by AOL, social media and spammers... "We can't have nice things"

   sci.electronics.repair      Fixing electronic equipment      124,925 messages   

[   << oldest   |   < older   |   list   |   newer >   |   newest >>   ]

   Message 123,058 of 124,925   
   ohger1s@gmail.com to kayge   
   Re: backlights #2   
   02 Sep 22 09:32:14   
   
   From: ohg...@gmail.com   
      
   On Thursday, September 1, 2022 at 4:53:29 PM UTC-4, kayge wrote:   
   > Well, well, aren't you sharp! I'm going through the backlight chain one by    
   > one INCLUDING connectors. The originals were 5 strips of 10 LED's, but the    
   > replacements are 10 strips of 5 tied by a connector. Sure enough one of    
   > the lines wasn't making it through one of the connectors. I will go    
   > through the rest of the chain tomorrow and repair any breaks. My friend    
   > will be super happy if I fix this as they aren't terribly well off. Just    
   > curious, where are you from? North Florida USA here.   
      
      
   I'm in Wolcott Connecticut.   
      
   I have seen a lot of those interconnects cause problems from flickering to no   
   function at all, but never on new strips.  I have a feeling you ended up with   
   pulls.  There should be zero resistance across the connectors.  After you fix   
   the bad one make    
   sure they ALL are zero ohms.  If any are a few tenths of an ohm or higher,   
   jump them all out with short insulated wires, otherwise you'll be back inside   
   at some point.  Even if they test good with an ohmmeter they may show some   
   voltage drop across them.     
   There of course should be 0.0V drop across the connectors.   
      
   If this TV has a back light adjustment in the customer menu, lower it to just   
   above half to preserve the LED array.  If it doesn't have an adjustable   
   setting in the menu, let me know and I'll show you what resistor to change to   
   lower the global current.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

[   << oldest   |   < older   |   list   |   newer >   |   newest >>   ]


(c) 1994,  bbs@darkrealms.ca