A leaking VARTA killed this 486 motherboard so I attempt to revive it
#repair
If you are into retro computer from the late 80s and into the 90s, you are probably fully aware of how destructive the NiCD “VARTA“ batteries are to these systems when they leak ... and this 486 motherboard had one such battery leak and cause some severe damage to the motherboard.
So, let’s try to get this motherboard working again to keep it out of the recycle bin!
-- Links
SMMC 0065 where this motherboard was first featured:
Second channel video where I first took a look at this monitor:
Leaking VARTA photo by John R. Southern:
:NiCd_VARTA_battery_leakage_on_circuit_board_(IMG_3313).jpg
Creative Commons Attribution-Share Alike 2.0 Generic license.
Adrian’s Digital Basement Merch store:
Adrian’s Digital Basement ][ (Second Channel)
Support the channel on Patreon:
-- Tools
Deoxit D5:
O-Ring Pick Set: (I use these to lift chips off boards)
Elenco Electronics LP-560 Logic Probe:
Hakko FR301 Desoldering Iron:
Rigol DS1054Z Four Channel Oscilloscope:
Head Worn Magnifying Goggles / Dual Lens Flip-In Head Magnifier:
TL866II Plus Chip Tester and EPROM programmer: (The MiniPro)
TS100 Soldering Iron:
EEVBlog 121GW Multimeter:
DSLogic Basic Logic Analyzer:
Magnetic Screw Holder:
Universal ZIP sockets: (clones, used on my ZIF-64 test machine)
RetroTink 2X Upconverter: (to hook up something like a C64 to HDMI)
Plato (Clone) Side Cutters: (order five)
Heat Sinks:
Little squeezy bottles: (available elsewhere too)
--- Links
My GitHub repository:
Commodore Computer Club / Vancouver, WA – Portland, OR – PDX Commodore Users Group
--- Instructional videos
My video on damage-free chip removal:
--- Music
Intro music and other tracks by:
Nathan Divino
@itsnathandivino