Checking for Hair Cracks
Created in Jan '97 by Marc-Jano Knopp and Daniel Krug
Check the conducting tracks between the two questionable points
using a continuity tester. If a track seems to be unconnected,
resolder the appropriate soldering point on both sides; if that
still does not help, solder a wire in parallel to the track.
If the tracks seem to be alright, you usually have to replace
one of the questionable parts.
Often you cannot find hair cracks this way because the contact
problems only occur under thermal stress. In this case, use a
hair dryer and/or ice spray to make the haircracks and dry joints
shout: HERE WE ARE! WE GIVE UP! :)
Site copyright © 1997 by Marc-Jano Knopp
This document is part of MJK's Commodore 64 & LCD Page
Brought back to life by Peter Schepers, Dec 10, 2005 because I really liked this site!