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Falcon Dallas NVRAM chip desoldering - is a Hakko "safe"?

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#1 oracle_jedi OFFLINE  



  • 452 posts
  • Nothing to Declare
  • Location:Seattle, WA

Posted Thu Oct 26, 2017 9:58 AM

Both my Falcons have dead NVRAM chips, no big surprise there.


I've read that removing them is a PITA, and that typical soldering iron+solderpult approach will likely destroy traces and possibly the whole Falcon.


I've also seen the "cut the chip away from the top" approach, which seems to me a risky way to make a huge mess too.


How safe is a Hakko desoldering station?  It seems pretty gentle on the vacuum and has variable heat settings from 400F to 750F, would this be a better option to desolder the Dallas chip from the underside and then use a plastic screwdriver to lever the chip off?





#2 Keatah OFFLINE  


    Missile Commander

  • 21,442 posts

Posted Thu Oct 26, 2017 11:29 AM

Hakko, Met-Cal, Harbor-Freight.. Whatever.. Thing is to be sure the tool-tip is grounded, properly sized, and has good heat capacity/reserve. It would take a lot of vacuum power to suck the traces off the board, so that isn't an issue.


It appears to be a standard DIP package, so no special tricks unless I'm missing something completely. I speak as an engineer seeing this as any other desoldering job.

#3 anzac ONLINE  


    Chopper Commander

  • 148 posts
  • Location:Portugal

Posted Thu Oct 26, 2017 1:37 PM

replacement NVRAM kit available on exxos store:




Falcon030 RTC replacement NVRAM



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