We handled the repair of a JVS Electronics Alarm Annunciator (Type – JAVO1421F, Sr. No – A727671) that showed malfunctioning alarm signals and display issues. Our team inspected the faulty circuits, replaced defective ICs and relays, and tested the unit under simulated alarm conditions. After repair, the annunciator operated with accurate and stable performance. Please note, we are not manufacturers — we only provide repair services.