| Year | 1943 |
| Date | 06-May |
| Volume | 88 |
| Issue | 2,191 |
| Page | 425 |
| Category | Electrical |
| Part | |
| Title | The Fault Lies in the Comm. |
| Author | J.W.Cooper |
| Notes | The commutator in place and re-connected, carbon dust, plastics for insulation, defective comm. in building ring, careful examinations, insulation, re-bushed commutator |