From: legg@nospam.magma.ca   
      
   On Thu, 21 Jul 2022 15:04:24 -0700, Jeff Liebermann    
   wrote:   
      
   >On Thu, 21 Jul 2022 15:36:36 -0400, legg  wrote:   
   >   
   >>On Wed, 20 Jul 2022 21:45:35 -0700, Jeff Liebermann    
   >>wrote:   
   >>   
   >>>UN55HU6840   
   >>   
   >>You might try a manual 'reset to factory', or a USB   
   >>re-flash. These procedures don't need an active screen   
   >>or remote.   
   >   
   >I looked at the user manual and searched the internet for such a   
   >procedure.  There are two resets.  One for resetting the smart hub and   
   >another for resetting everything except the network settings.  Both   
   >are access from the setting menu which requires seeing something on   
   >the screen.  There are probably instruction for a factory reset   
   >without using the remote or screen, but I couldn't find them.   
   >   
   >>I've yet to run across an audio-ok/blackscreen situation,   
   >>so can't advise.   
   >   
   >Running across or otherwise trampling the TV is not advisable.   
   >   
   >>You can take off the back and hunt for obvious problems   
   >> like bulging caps or iffy connectors.   
   >   
   >Not all electrolytic capacitor problems are easily recognizable as   
   >bulging or leakage.  I suggest an ESR tester to be certain.   
   >   
   >>To troubleshoot, you'll really need to get a service manual.   
   >>This should tell you how to get the back off, without   
   >>bending something. It will also offer test points for   
   >>measurement.   
   >>   
   >>RL   
      
   You're right. It looks like only Panasonoc, Sanyo and Sony   
   sets have a side-button power-on reset.   
      
   For Samsung audio/no image symptoms, the 'troubleshooting   
   tree' branches out as   
   -check LVDS connector   
   -change tcon   
   -change main board   
      
   Not very helpful. Unlikely it's a power supply issue, but   
   bulging caps are common, even so, on sets of this era.   
      
   Some TVs are too smart for their own good.   
      
   Haven't had one for personal use since 1978.   
   Bloody waste of time.   
      
   RL   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)