Subj : Re: Clock Battery No boot
To   : Gamgee
From : Dennisk
Date : Thu Jun 18 2020 21:30:00

-=> Gamgee wrote to Dennisk <=-

 -=> Dennisk wrote to paulie420 <=-

 De> I have a 486 motherboard that won't start at all (thought it well
 De> beep if there is no RAM installed).  No video.  I've been told
 De> that perhaps its something as simple as the battery, which may be
 De> the case as I've tried changing the RAM, CPU, etc.

 De> I take it though, that the board won't start up until a new
 De> battery is put in place?  Or is removing the dead battery enough
 De> to get it started?

 Ga> It will likely need a new battery installed.  That generation of
 Ga> mainboard may have the very common (back then) Real Time Clock and
 Ga> battery combo, often the Dallas DS1287 or DS12887.  Can be a real
 Ga> pain to desolder / resolder, but I've done it successfully.

 Ga> You can get them on eBay, here:
 Ga> https://www.ebay.com/sch/i.html?_trksid=p2050601.m570.l1313.TR0.TRC0.Xds
 Ga> 12887a&_nkw=ds12887a&_sacat=0&_from=R40

Thanks.  I really only want the board working becuase it has an 8bit ISA slot. 
I want to get a CGA monitor working and all the other boards only have the
16bit ISA slots.

But I blew the powersupply because I absentmindedly connected the power to the
motherboard incorrectly (ie, the black cables weren't in the middle).

Damn!

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