My WFM90 does not run off battery power but works fine from the AC power connector. What is wrong?

Question:

My WFM90 does not run off battery power but works fine from the AC power connector. What is wrong?

Answer:

The combined symptoms of working off the AC power adaptor but not working from battery power usually indicates a burned-out fuse. Please consult the WFM90D service manual available on our website at the link below for instructions on how to replace the fuses in your unit:

WFM90 Service Manual

Replacement fuses can be ordered from Tektronix as part number 159-0378-00.

This FAQ Applies to:

Product: WFM91D, WFM90D, WFM90, WFM91

FAQ ID : 63896

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