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Consumables and wear items

Strings, heads, batteries, power supplies, cables and other items that require replacement or inspection over time.

Maintenance principles Environment and storage conditions Cleaning and surface care Routine checks and preventive maintenance Consumables and wear items Maintenance by gear type Long-term storage and inactivity Documenting maintenance and condition When to use a technician Maintenance and value preservation Maintenance checklists

Strings, drum heads, felts, batteries and other consumables do not all age at the same rate.

Assess physical condition, performance, frequency of use and storage conditions. A corroded string, damaged head or battery showing abnormal signs should not remain in service merely because a scheduled date has not arrived.

When replacing a consumable, inspect the surrounding parts as well; it is often the easiest moment to spot dirt, wear or loosening.

Periodically inspect installed batteries, power cables and external power supplies.

Remove batteries from equipment that will remain unused for a long period where the documentation permits, particularly when leakage is a concern. Replace cables with damaged insulation, deformed connectors or power supplies showing overheating, noise or abnormal behaviour.

For power supplies, always verify compatible specifications: voltage, available current, polarity and power type must match the equipment requirements.