Results 1 to 2 of 2
Thread: Testo 550?
07-06-2012, 11:42 PM #1Professional Member
- Join Date
- Mar 2005
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 #2
You may want to go to the Testo site for support to see if you need to download firmware or to reset it