View Full Version : Testo 550?
07-06-2012, 11:42 PM
Was using 550's today reading SH/SC just fine all of sudden lose SH thought it may be batteries replaced them then lost SC/and SH.. all the arrows are doing now are making screen blink...Anyone else come across this?
07-10-2012, 11:15 AM
You may want to go to the Testo site for support to see if you need to download firmware or to reset it
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