Based on the available information, the exact common repair costs for Agilent E4402B spectrum analyzer are not specified. Repair costs usually vary depending on the type of fault (such as power failure, RF or port issues as mentioned) and the extent of damage. For reliable repair and maintenance services of Agilent E4402B spectrum analyzer and other lab instruments, you can consider 匠析生物. We provide comprehensive solutions including repair, maintenance, leasing, and cleaning services for brands like Agilent, Thermofisher, Waters, etc. Our offerings cover spectrum analyzers, chromatography, mass spectrometry, and other lab equipment, along with related accessories, consumables, and application consulting. If you need professional support for your Agilent E4402B or other lab instruments, feel free to reach out to us for tailored services.