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Thread: Problems with Victor 86B DMM temp readout.

  1. #1
    Senior Member Yelta's Avatar
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    Problems with Victor 86B DMM temp readout.

    Gene Cafe Coffee Roaster $850 - Free Beans Free Freight
    I suspect my Victor MM may have given up the ghost.

    When I set up to roast a couple of days ago it would not respond, the display turned on however remained static and would not respond to temp changes.

    Thought it may have been the fuse, pulled it apart and replaced the 500mA fuse (it was blown) still no luck.

    Now when I turn it to temp range it cycles from 7.6c up to about 297C then finishes with the display showing four zero's.

    Any thoughts? I suspect I'm up for a new one.

  2. #2
    Senior Member flynnaus's Avatar
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    How about the temp probe cables? Are they securely plugged in? This happened to me this morning. Temp wasn't changing. I jiggled something and suddenly away it went. Can't say for certain what it was.

  3. #3
    Senior Member Yelta's Avatar
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    Thanks for the reply Flynn.

    Yep, checked the cables, even read the instructions, to no avail.

    Thought I would ask the question before ordering a new one.

  4. #4
    Senior Member flynnaus's Avatar
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    Could it be the thermocouple is kaput? Have you tried the other DMM functions?

  5. #5
    Mal Dimal's Avatar
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    Quote Originally Posted by flynnaus View Post
    Could it be the thermocouple is kaput? Have you tried the other DMM functions?
    A quick check to determine if it's the meter or the t/c, is to remove the t/c from the meter and check the temp being indicated on the display without the t/c. Should read what ever the ambient temp. is, if not, the meter is cactus...

    Mal.
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  6. #6
    Senior Member Yelta's Avatar
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    Thanks Mal, I suspected as much, time to do some shopping.

  7. #7
    Senior Member Yelta's Avatar
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    Just ordered a new one on Bean Bay along with a selection of green beans.
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  8. #8
    Senior Member Yelta's Avatar
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    Behmor Coffee Roaster
    FWIW used my new DMM for the first time yesterday, seems the calibration is very close to the old meter, FC at near enough to 200 and as usual finished at approx 225, so nothing much has changed.

    As a matter of interest the old probe worked in the new DMM, so seems the old meter was cactus.
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