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Tube Life
Q: How often will I need to change the tubes in my Vt-737sp / Vt-747sp?
A: The tubes in your 737sp are designed to operate for a minimum of 5,000 hours. We have seen units with tubes that have over 15,000 hours and are still operating within spec.
The way to tell if tubes are bad or failing:
1. Electronic Noise: All types from consistent high levels of hiss to random splats, static sounds and popcorn noise.
2. Microphonic Noise: To test for microphonic noise, simply tap the tube carefully with the rubber eraser at the end of a pencil. If you hear a loud ping or lasting ringing sound, the tube should be replaced.
Tube Life
Q: How often will I need to change the tubes in my Vt-737sp / Vt-747sp?
A: The tubes in your 737sp are designed to operate for a minimum of 5,000 hours. We have seen units with tubes that have over 15,000 hours and are still operating within spec.
The way to tell if tubes are bad or failing:
1. Electronic Noise: All types from consistent high levels of hiss to random splats, static sounds and popcorn noise.
2. Microphonic Noise: To test for microphonic noise, simply tap the tube carefully with the rubber eraser at the end of a pencil. If you hear a loud ping or lasting ringing sound, the tube should be replaced.
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