Question about DeLonghi DCU72 Coffee Maker

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Delonghi DCU72 refused to heat on 6th use.

Refused to heat at all on 6th attempted use. Heating element measured normal resistance for 1000 watt rating, no obvious overheating failures on circuit board. No voltage measured downstream of circuit board. Is there any typical failure of an element on the board or ? that I should look for or try to fix? The unit was never submersed or abused, looks like new inside, outside and underside.

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  • deerken Feb 06, 2009

    Identical problem on same model. Failed after 4 uses. Power light burns, but element does not get hot.

  • dhank Feb 17, 2009

    At least you made it work, non automatic, let us know what you find out about fixing the board, what failed, what replacement works.

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I have the same problem.
Being an electrical engineer, I would like to debug the circuit card.
However, I would like to brew coffee also.
I disassembled the bottom of the coffee maker, and unscrewed
the bracket holding the circuit card.
I cut the input power and ground wires from the plug to the card, and detached its modular wire to the heating element.
I removed the card
(to take to lab for further debugging).
Then I bought some .25 inch modular tab connectors at the hardware store and attached one to the power wire formerly going to the circuit card. I attached this to the heating element.
I covered the spare ground wire with electric tape.
Now I have a coffee maker which brews coffee again (except that I must pull the plug to shut it off).
If I figure out what is wrong with the circuit card, I will update you.

Posted on Feb 08, 2009

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I have the same problem.
I disassembled the bottom of the coffee maker, and unscrewed
the bracket holding the circuit card.
I cut the input power and ground wires from the plug to the card, and detached its modular wire for the heating element.
I removed the card (to take to lab for further debugging).
Then I bought some .25 inch modular tab connectors at the hardware store and attached one to the power wire formerly going to the circuit card. I attached this to the heating element.
I covered the spare ground wire with electric tape.
Now I have a coffee maker which brews coffee again (except that I must pull the plug to shut it off). I must be careful not to let the
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If I figure out what is wrong with the circuit card, I will update you.
It has a microprocessor, and I am not optimistic about replacing
that (with the right program in it). If it is the triac (the component
with the big block heat sink), it can be done.

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