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Thread: Behmor roaster losing digital display segments

  1. #1
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    Behmor roaster losing digital display segments

    Gene Cafe Coffee Roaster $850 - Free Beans Free Freight
    For the second time now, our Behmor is losing segments of the digital display. Before ordering another display panel, is there any advice regarding either solving this problem or preventing it happening?
    Thanks in advance.
    Andrew (Penang)

  2. #2
    Mal Dimal's Avatar
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    G'day Andrew...

    Do you know what the line voltage being supplied is and if there are any issues with the quality of supply?

    Mal.

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    Quote Originally Posted by Dimal View Post
    G'day Andrew...

    Do you know what the line voltage being supplied is and if there are any issues with the quality of supply?

    Mal.
    Hi Mal,
    Something I had never measured. Just now it was 235V. As for the quality and variations, don't know, but I'll do a search. But if it is the voltage, will just have to wear it I suppose. We have a lot of electrical storms here, so variations are likely common. Are the displays sensitive to voltage?

  4. #4
    Mal Dimal's Avatar
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    You could buy a decent quality mains filter and plug your equipment into this. This helps to filter out any troublesome transients and surges and prevents them from getting into your machinery.

    Mal.
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    CoffeeSnobs Owner Andy's Avatar
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    Are the displays sensitive to voltage?
    All electronics are sensitive to voltage and moisture, I suspect Penang is torture on both fronts.

    Out of 3000 odd roasters this is only the second time I can remember hearing about segments dropping and they were both yours.
    Mal's tip is spot-on, if you can clean the power going in then half your likely causes are removed. Stopping humidity in Penang will be trickier.

    Worth asking Behmor tech support too, they might see more than we do in Australia which is mostly dry with good power delivery but I suspect they would see a total of near zero percent like we do.
    https://behmor.com/behmor-tech-support-form/
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  6. #6
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    Well, thanks Andy and Mal.
    From my limited knowledge, cleaning and filtering home power supply is not an easy thing. Properly effective solutions are prohibitively expensive. There is always the UPS option, with good separation between in/out. Again expensive. Also, getting stuff here in Penang can have limitations.
    But my knowledge in this area is seriously out of date with my 70th birthday looming in a few days!
    In the back of my mind is the fact that the roaster is only plugged in for 30 minutes or so once a week. What are the chances of getting a surge or spike in that short time.
    And humidity? It's the tropics. Can't do much about that. Hahaha. Mossies and Dengue too! This is balanced by the chicken rice, char kway teow, hokkien mee, penang laksa, wanton mee, roti canai, curry mee, and much more!
    I will contact Behmor as you suggest.
    And when the display becomes unreadable, I will get another panel from you Andy. Your service is so good. Thank you.
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    338
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    Quote Originally Posted by AndyShak View Post
    And humidity? It's the tropics. Can't do much about that. Hahaha..
    Probably is something you can do about the humidity. I have never seen inside a Behmor or what drives the display, but google 'circuit board lacquer' designed for circuit boards in high humidity conditions. About $10 a can here
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  8. #8
    Mal Dimal's Avatar
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    Need to use a PCB cleaner first then the lacquer...
    Regarding a decent transient/surge protector, I would recommend this one as a minimum. Not expensive...
    https://www.belkin.com/au/p/P-BV104020-2M/

    Mal.
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  9. #9
    338
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    Thanks Mal for additional information

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    Thanks again Mal.
    I ordered two of these
    https://www.lazada.com.my/products/weiduka-ac88-black-color-power-purifier-conditioner-standard-original-black-self-import-version-australia-i224471771-s287561953.html

    Trouble is, it is difficult to compare products. Pulled a few so-called filters apart and it seems almost laughable what is actually there.
    And, when I get the new panel, will definitely use the circuit board spray. But just searched extensively and can't find it here. Will keep trying.

    Appreciate this advice.
    Andrew
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  11. #11
    CoffeeSnobs Owner Andy's Avatar
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    Quote Originally Posted by 338 View Post
    Probably is something you can do about the humidity. I have never seen inside a Behmor or what drives the display, but google 'circuit board lacquer' designed for circuit boards in high humidity conditions. About $10 a can here
    That's a good tip but I think the Behmor boards are already lacquer dipped (from memory). they are ROHS (no lead) and the lead-less solder needs to be sealed. Makes it a bugger to change a component too. I suspect the LCD could still take moisture from the back as they are typically raised from the board a smidge.

    The power conditioner looks good, that might eliminate the potential power problem.
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  12. #12
    Mal Dimal's Avatar
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    As Andy says, the power conditioner should be Ok although I can't locate any engineering data for it.

    Should be good...

    Mal.

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    I had the same problem. Support recommended taking off the right side panel. Six screws. Then disconnecting the ribbon cables and reconnecting. The problem righted itself before I got to doing it.
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    Quote Originally Posted by Australis View Post
    I had the same problem. Support recommended taking off the right side panel. Six screws. Then disconnecting the ribbon cables and reconnecting. The problem righted itself before I got to doing it.
    Sadly, this simple idea did not fix the problem with the lost segments on the digital display. Cleaned the board and every other connector too. Thanks for the suggestion.
    Andrew

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    Senior Member Jackster's Avatar
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    Is it the same segment on each digit?
    If so, it is possibly a transistor on the board.
    I have a oven that has that issue, I have found the transistor, but haven't bothered fixing it..

  16. #16
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    Behmor Coffee Roaster
    Quote Originally Posted by Jackster View Post
    Is it the same segment on each digit?
    If so, it is possibly a transistor on the board.
    I have a oven that has that issue, I have found the transistor, but haven't bothered fixing it..
    behmorsegments.jpg

    Getting a bit beyond me though. At the moment it is useable, but any more segments lost will make things a bit tricky.



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