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Rocketfish UPS RF-825VA SMD Crystal Oscillator Specs and Replacement Sources

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  • #1 21667412
    Eugene Lisovy
    Anonymous  
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  • #2 21667413
    Frank Bushnell
    Anonymous  
  • #3 21667414
    Mark Harrington
    Anonymous  
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    Mark Harrington
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    Florencio Santos
    Anonymous  
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    Florencio Santos
    Anonymous  
  • #7 21667417
    Florencio Santos
    Anonymous  
  • #8 21667418
    Frank Bushnell
    Anonymous  
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  • #9 21667419
    Florencio Santos
    Anonymous  
  • #10 21667420
    Frank Bushnell
    Anonymous  

Topic summary

A Rocketfish UPS model RF-825VA exhibits a blank but backlit LCD display, suspected to be caused by a bulged and possibly blown surface-mount device (SMD) crystal oscillator. The crystal oscillator is unusually large, raising concerns about its failure. Common causes for LCD display issues include poor connections between the LCD glass and its driver PCB, often via conductive rubber strip connectors, which can be resolved by careful disassembly and reassembly. Crystal oscillator failure is rare; issues may instead stem from the LCD driver IC or microcontroller, with suggestions to check oscillator pins and decoupling capacitors (typically 5 to 15 pF). Replacement of the crystal oscillator requires exact frequency specifications, which are best obtained from the manufacturer’s support, as generic replacements may not match. Due to the complexity and potential hazards of UPS repair, obtaining a service manual and schematic is strongly advised. If the crystal replacement does not restore function, the entire PCB may need replacement. Photos of the damaged oscillator should be sent to Rocketfish support for precise identification and sourcing.
Summary generated by the language model.
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