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:
Replacement fuses can be ordered from Tektronix as part number 159-0378-00.
This FAQ Applies to:
Product: WFM91D, WFM90D, WFM90, WFM91
FAQ ID : 63896View all FAQs »