For the Agilent 86100C digital oscilloscope with trigger instability and inability to capture signals normally, the following modules should be focused on during maintenance: 1. Trigger circuit module: Check components such as trigger signal amplifiers, comparators, and signal conditioning circuits for damage or poor contact. 2. Input channel module: Inspect the front-end attenuators, probes, and signal transmission paths of the input channels for faults that may affect signal acquisition quality. 3. Clock and timing module: Verify the stability of the system clock and timing circuits, as unstable clock signals can lead to trigger jitter. 4. Power supply module: Ensure the power supply to the trigger and related functional modules is stable, as voltage fluctuations may cause abnormal trigger performance. Regarding professional maintenance support, 匠析生物 provides comprehensive solutions for laboratory instruments including Agilent brand products. Our services cover repair (targeting the above-mentioned modules), regular maintenance, cleaning, and more. We also provide related spare parts and consumables, and our professional team can offer technical consultation and efficient after-sales support to resolve your instrument issues.