Question about Cuisinart Supreme Grind DBM-8 Electric Burr Grinder

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No power This is a replacement. I sent one back for the same issue. The first one worked for a month. I can not get this one to grind a single bean.

Posted by shibes on

  • 6 more comments 
  • espresso guy Nov 01, 2007

    my power stopped working...I removed beans and shook unit...still no power

  • Sandra M Nov 03, 2007

    One day our grinder worked fine, the next day, no power. Is there a reset? We chose this model because it seemed substantial, you know, like it wouldn't break down quickly...

  • Anonymous Dec 29, 2007

    just stopped working; no power.

  • 4evansache Jan 06, 2008

    Same problem. Only two weeks old. No power and no reason why. Obviously these Cuisinarts are gabage.

  • Anonymous Mar 23, 2008

    two months of use, and now no power. Sheesh!

  • JWSmith Mar 24, 2008

    My first DBM-8 lasted 14 months. Called CS and they sent out a new one. That one stopped today exactly as the first one at about 20 months. Usage is once a day, medium grind 8 cups. CSR said today that it was out of warranty, never asked my name, never offered repair for charge. Oh one additional trivia. They said they rarely hear about any problems with the DBM-8!

  • JWSmith Mar 24, 2008

    My first DBM-8 lasted 14 months. Called CS and they sent out a new one. That one stopped today exactly as the first one at about 20 months. Usage is once a day, medium grind 8 cups. CSR said today that it was out of warranty, never asked my name, never offered repair for charge. Oh one additional trivia. They said they rarely hear about any problems with the DBM-8!

  • truebluemary Mar 27, 2009

    Same problem. Just stopped working after two months. We used it a few times per week during that period.



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We have had the same problem with the grinder not working. The front base of the main unit has a small slot. Inside the slot is a safety switch. The switch is closed when the coffee ground container is inserted into place. You will also see the small blade on the front bottom of the container which activates the safety switch. I just used a small toothpick and cleaned any debris from the slot and exercised the safety switch by gently pushing it back a number of times.

You can test the unit by taking the coffee ground container out and set it aside. Position the coffee amount slide to any number just so it isn't in the off position, then hold the on bar down and take the toothpick activate the safety switch in the slot on the front of the base of the unit. It worked for me. I didn't see anything obstructing the switch but it is dark and hard to see in the slot. I possibly dislodged some coffee grounds or something which restricted the switch movement.

Posted on Mar 27, 2009

  • Deirdre
    Deirdre Oct 10, 2013

    Thanks - I couldn't figure out where that metal 'blade' went, after reading this over a few times and tryingto get that blade to fit in all kinds of ways I finally got(!) it thanks. Back to working well. I've been grinding daily with this for 5.5 years.




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The other safety switch is under the hopper. If it isn't screwed down enough, it won't turn on. To ensure this doesn't happen, screw down the hopper all the way, then back it off to the setting you want.

Posted on Dec 31, 2009

  • fvillaaz Jul 08, 2011

    This unit has been working fine for more than two years, then a month ago just quit.

    I unplugged unit, unscrewed the hopper, cleaned inside the grinder as best I could. There was a small build up of coffee on the outshoot opening. Made sure the grinder blades turned freely. Put every thing back together and it is working now.



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1 Answer

How often should you need to clean the bean grinder? We seem to be cleaning it every 3 days which seems excessive

No brand or model? Okay, general reasons why grinders clog up. Most common I've found is worn out burrs. The plates, depends on composition and usage. Metal plates last longer but not forever. If your grinding thousand pounds of beans don't expect it to last. I've seen massive grinders fail within a month. It all depends on two factors; How much and how fine. Large grind size will increase life and fine grinds wear the burrs out very fast. Especially Turkish settings. Fine grinds also generate a lot of heat. This can cook the coffee again and make it change in flavor. Heat also forces the oils in the bean to coat the burrs and make them dull out which causes more heat. Prolong grinding will also burn out motor.
* Worse case senario; Very oily beans ground to espresso fine. This is usually the case with 'local' roasters. Poor quality beans, extreme roasting (pushing the max on toasting limits), and extreme fine grinds for a particular roast. Fine grinding tends to work on dryer beans. Heavy moisture (under roasted or beans not aged enough to outgas and dry out) will gum up any grinder. Let your roaster know what your trying to do. Otherwise go with a name brand and correct bean for the flavor profile your looking for. Don't expect 5 star espresso from a cheap roast.
* Final, most likely worn burrs needs to be changed out. Off chance the motor is burnt out or starter capacitor needs replacement. If it is the motor or cap, then you need to review your grinding methods as grinder motors are usually tough enough to handle the range of grinds listed in the specs. burning the motor is a clear sign of abuse.
* Have your vendor look at the grinder. They will know right away what's wrong.
Aloha, ukeboy57

Apr 17, 2018 | Coffee Makers & Espresso Machines

1 Answer

I have a Delonghi magnifica s plus and it won't grind the beans and as a fault message saying less coffee

Try less beans and see if it works. If still nada it may be an issue with the motor not working and grinding the beans. If there are motor brushes they may be worn and render the motor inert.

Sep 04, 2017 | DeLonghi Coffee Makers & Espresso Machines

1 Answer

Bunn g3 commercial grinder

Humm, G-3 grinders. Okay what common problems I've come across:
* Wrong setting for grind on label. Usually means worn out grinder burrs. But this does not happen often unless you are using it to grind commercial amounts of coffee? It's a retail level grinder meant to be user friendly and simple to use. Say grind a bag of beans once every 10 mins or so even with customers lined up to grind there own. Running a G-3 constantly is usually done by upcoming coffee vendors whom are using it for small flavored bean batches. But expect the burr plates to only last 3 to 6 months. We used to change it every month till the boss bought a bigger pro grinder. (whew!)
* Out of calibration (for grind) This usually happens as soon as it's installed. Either the grinder got banged (Dropped?) around or the lock nut was not tighten down. If caught quickly then it's a simple adjustment. Left unchecked will wear out the burrs or crack the plate.
* Trips out breaker. This is common at retail stores as it's located in a shelf rack that really does not have the required outlets. Many times there is a brewer(s) connected to the same line. It only trips out when one or both brewers are heating and the grinder is running a very fine grind.
* Trips out breaker when grinding espresso or very fine grinds. Worn burrs or slim chance the grinder was miss calibrated (but you would catch this when first installed)
* Shocks the customer. Dry climates or heavy air conditioning will build up static electricity at the chute. There usually a small chain attached to the chute to prevent this. Attach a SHORT metal chain or thin cable to the metal case of the grinder and add a metal clip to attach to the coffee bag. Many use a chain and clip just short enough to keep the bag positioned under the chute. Note many coffee bags come with bag clips. Just make sure the clip and chain can't get stuck in the grinder.
* Not working. This is usually the on/off switch as it gets beat up the most. There is sometimes a safety micro switch under the chute to sense if there is a bag there. I've found may have been defeated.
* No power, check cord, breaker (GFRI) outlet, Plug prongs if broken off or bent.
* power but no motor hum. Tripped thermal breaker (usually a red button on side or back. Some models may have it inside on the motor itself. Call for service to check.
* Turns on but loud hum (may be hot too). Burrs stuck. This could be from adjusting grinder while grinding beans and adjusting to a fine setting. Grinding finer slows down the beans feeding the burrs. Large settings flood the burrs with a lot of beans. Adjustments are usually done when the grinder hopper is completely empty. If loaded and turned down from coarse to fine grind the beans already in the burrs get crushed and stuck between the plates thus locking them in. It may be possible to clear the hopper and open up the grinder to its coarsest setting to jog out the crushed beans. Otherwise call for service to have the burrs cleared manually.
*Finally check with your vendor if your still having problems.

Aloha! ukeboy57

Mar 22, 2017 | Bunn Coffee Makers & Espresso Machines

1 Answer

I've owned my Baratza Virtuoso for almost two years. Over the past four months it has started acting up on my when I grind beans with a high oil coating. I tried cleaning it today by running white rice...

First, I'm not a Baratza tech, but I have worked on commercial grinders. You should contact your vendor for service.
*** The following is for information only ***
* check on line for your model parts manual. The diagrams will help you identify the parts needed and should provide instructions on replacing/cleaning the burrs.
* As you've figured out, cleaning with rice is not a good idea.
* Burr plates do get dull and needs to be replaced. Longer grind times and frequent adjustments to get finer grinds is an indication of dull plates.
* The oil in the beans used gets caked up under and on the sides of the burr plates.
* Heavy usage and long grind times will melt the oils and fill every part of the burr chamber and even get into the motor and bearings. I've found oil in the on/off switches and rotary switches.
* The burr plates must be removed and chamber cleaned of all oil residue and beans (rice too). Use a vacuum cleaner and stiff brush to clean. Do not use water or any liquids in the burr chamber. You can clean the burrs in wash water once it's removed from equipment. Dry thoroughly before reinstalling.
* The motor should turn freely by hand (no power!) with nothing hitting the sides or under the plate. If it's difficult to turn or makes grinding or whirling noise. Then the lower plate needs to be removed and cleaned. The motor bearings will need to be replaced if the motor does not turn at all.
* Once cleaned and assembled(without any beans) Power up and check the operation. You should have a motor hum without any clanking or screeching (metal rubbing metal) sounds. Stop and power down if you do. Motor bearings are bad.
* If you get nothing then check the switches. Oil probably got in them. Replace.
* Runs okay? Then set the grinder to a large setting (like drip coffee; Turn on and allow to run while you drop some whole beans into the hopper. Use 1/4 cup or less. This should grind through smoothly.
* Placing another 1/4 cup of whole beans. Turn on grinder again. Just hums without grinding? Power down. Replace motor starter capacitor.
* The capacitor is round and usually attached to the motor like a 'hump' on the side or near the top. If you didn't take it apart then one of the wires in the switching side may be miss wired or loose. Check both for loose and correct wired. Careful around the capacitor as it may still have a charge! The capacitor is used to kick start the motor with it's heavy burr plates.
* If your still having problems with low power. Check the motor for burnt smell as you may have overheated and fried the motor. They usually have thermal resets, but if you kept forcing the reset to keep grinding then the motor is defiantly burnt out.
* Final; if everything is working but your not getting the fine grind setting (you should at least get espresso setting but not turkish) then the burrs are gone. It will only be good for drip coffee.
Aloha, ukeboy57

PS I found a cute video on how to clean the burrs (frequent cleaning)

Jan 29, 2018 | Baratza Virtuoso Electric Grinder

2 Answers

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I'm on my second grinder of this model.......... in the past 2 months. The first stopped working so I just took it back and replaced it. The second time it quit working I removed the cup with the grinded coffee and noticed smoke wafting up from the unit. Both times it quick working I was grinding 12 cups of beans (12 cups of brewed coffee, not 12 cups of actual beans). The unit shouldn't have a setting to grind that much coffee if it burns the motor out, which is what happened.

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