When converting films and photos to VHS, save the original copy. Major causes of tape deterioration are heat, humidity, dirt, magnetic fields and improper handling. Symptoms of breakdown or deterioration are fuzzy images, blank spots and static on the tape. Breakdown occurs slowly. Avoid direct sunlight.
Sunlight breaks down the binder that holds the oxide to the base on tapes.
Store and keep tapes away from high temperatures , i.e., radiators, heating vents, air conditioners and other appliances. Fluctuations in temperatures causes long-term deterioration of tapes. This causes expansion and contraction of the tape base, which leads to warping and even oxide shedding. Keep videotapes away from dust , dirt and oil, i.e., cigarette smoke, oil and acid from fingers. The VCR heads could become dirty and cause abrasion to film by passing dust, dirt or oil from one film to another.