Dave checks the Dallas DS1220Y chip in the Prema 6047 7.5 digit multimeter to see if the battery is dead, and if the calibration constants have been lost. http://datasheets.maximintegrated.com/en/ds/DS1220Y.pdf ROM is here: http://www.eevblog.com/files/Prema6047-ROM-8-5-91.BIN Previous video: https://www.youtube.com/watch?v=G-6BBF3HyRU Forum: http://www.eevblog.com/forum/blog/eevblog-615-prema-6047-multimeter-followup / EEVblog Main Web Site: http://www.eevblog.com EEVblog Amazon Store: http://astore.amazon.com/eevblogstore-20 Donations: http://www.eevblog.com/donations/ Projects: http://www.eevblog.com/projects/ Electronics Info Wiki: http://www.eevblog.com/wiki/
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