Yes, the iBook G3 and iBook G4 both have issues with solder cracking.
The cases are very flexible, and the flexing case puts pressure on the logic board, which causes the solder of two components to crack…
In the iBook G3, the GPU solder is affected, the only way to repair it… is to have a reballer re-do the solder… Those other little tricks you may have read about don't last very long.
In the iBook G4, another chip (also controls video) is affected, but it's a relatively easy fix… Just desolder the connections and resolder them.
All G3s and G4s will eventually fail from cracking video chip solder, it's just a matter of when.
The cases are very flexible, and the flexing case puts pressure on the logic board, which causes the solder of two components to crack…
In the iBook G3, the GPU solder is affected, the only way to repair it… is to have a reballer re-do the solder… Those other little tricks you may have read about don't last very long.
In the iBook G4, another chip (also controls video) is affected, but it's a relatively easy fix… Just desolder the connections and resolder them.
All G3s and G4s will eventually fail from cracking video chip solder, it's just a matter of when.