Skip to content

Build studies of small machines, boards and parts

SetStudies 2026
RevC

FLT-01

Fault study: a cracked disc component

A blue disc component with a visible crack, photographed where it sits on a tan board. A record of the fault only, not a repair.

Drawn
Status
Fault observation
Drawn by
Circuit Works
A cracked blue disc component sits among wires and capacitors on a circuit board.

This is a fault observation. The blue disc has a dark crack running across its face.

The photograph does not show what caused it, whether the board still works, or what might replace the part, so the sheet records none of those.

Callouts

  1. A dark crack runs across the face of the blue disc.
  2. Two red wires rise from the board on either side of it.
  3. White adhesive holds nearby parts in place.
  4. A large black cylindrical capacitor sits in the foreground.
  5. A grey cable loops around the board.

Revisions

  1. Rev A · · Fault noted

    Recorded the crack and its position on the board.

  2. Rev B · · Scope

    Removed a guess about the cause. The sheet now records only what the photograph shows.

Adjacent sheets