From: nobody@but.us.chickens   
      
   On 4/22/2010 5:54 AM Arny Krueger spake thus:   
      
   > "David Nebenzahl"  wrote in message   
   > news:4bcf5bd8$0$2392$822641b3@news.adtechcomputers.com   
    >   
   >> On 4/21/2010 12:58 PM David Nebenzahl spake thus:   
   >>   
   >>> On 4/21/2010 12:42 PM Chuck spake thus:   
   >>>   
   >>>> On Wed, 21 Apr 2010 12:18:03 -0700, David Nebenzahl   
   >>>>  wrote:   
   >>>>   
   >>>>> Question is about a Kyocera R-851 receiver, ca. 1985, 85   
   >>>>> w./channel. Unit is in fine condition (many capacitators have   
   >>>>> been replaced) except for one thing: it doesn't remember   
   >>>>> radio stations. Does anyone know enough about this   
   >>>>> unit to tell me what the likely culprit is here? Any links to   
   >>>>> schematics?   
   >>>>   
   >>>> Look for a .47 to 1 Farad capacitor on the front panel.   
   >>>> Used to do warranty service on these and I believe that   
   >>>> is how the back up voltage was stored.  Chuck   
   >>>   
   >>> Thanks for the quick reply.   
   >>>   
   >>> So by "front panel" you mean the back of the front panel   
   >>> inside, right? Would that be accessible from the top or   
   >>> bottom of the unit?   
   >>   
   >> Found it. But it's not a supercap as you said; on the   
   >> left side of the front panel there's a 3-volt cell, a   
   >> Sanyo marked "LF-1/2W" that says it's a Li-Mn cell (never   
   >> heard of that chemistry before). I'm going to the local   
   >> electronics store to see if they have a replacement.   
   >   
   > Yes, the mention of Lithium Manganese batteries is a bit of a flash from the   
   > past.   
   >   
   > A moment of silence for a technology that does not seem to have passed the   
   > test of time.   
   >   
   > In many cases your current problem has been circumvented by simply wiring a   
   > 2-cell AA battery holder in   
   > parallel with the on-board cells.   
   >  would monitor the temperature of the new batteries for aI would monitor the   
   > temperature of the AA celll for a fewessboard cell.   
   > I would monitor the temperature of the alkaline cells   
   > for a few minutes after installtion to ensure that there was no shorting.   
   >   
   > This was a commonly-accepted dodge back in the old days of PCs before the CR   
   > 2021 cells became the de-facto standard.   
      
   Thanks, but I'm not going to sweat any of that.   
      
   Rummaging around in my battery collection, I found another similar   
   3-volt lithium cell. (Like a large hearing aid battery, not an axial   
   one.) It was good, so I soldered it in place of the old one. The   
   receiver works fine. I'm letting it sit a couple days without power to   
   confirm that the memory is being backed up.   
      
      
   --   
   The fashion in killing has an insouciant, flirty style this spring,   
   with the flaunting of well-defined muscle, wrapped in flags.   
      
   - Comment from an article on Antiwar.com (http://antiwar.com)   
      
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    * Origin: you cannot sedate... all the things you hate (1:229/2)