Seeking help from a Tektronix spectrum analyzer, part ROS-4720-1 voltage control

• Seeking help from a Tektronix spectrum analyzer, part ROS-4720-1 voltage control
  Posted by gejianyong on 03 May, 2024 09:52
• Seeking help from a Tektronix spectrum analyzer, part ROS-4720-1 voltage controlled oscillator VCO, malfunctioned when the temperature was slightly higher. measure the input+ to ground voltage drop rapidly as the temperature increased. Suspected it to be a damaged SMT transistor labeled 86, unknown specific replacement model. Seeking help

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• #1 Reply
  Posted by Testtech on 04 May, 2024 21:54
• That is a mini-circuits lab part. Search for the MCL- part number.