Re: [FAQ] Atten 858d problem S-E (or 5-E) or stuck in 498'C.
Yes correct, I hold 2 buttons and I have like 3 seconds to set a default temperature...
jmbinette
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Last Activity: 08-21-2019, 06:09 PM
Joined: 11-22-2017
Location: Chambly
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Re: [FAQ] Atten 858d problem S-E (or 5-E) or stuck in 498'C.
Only setting I found is pressing the 2 buttons at the same time and I can set the default power-on temp. And it gets remembered by the EEPROM.
As for the replacement firmware ... I would consider it but would rather start with a fully functional unit before...Leave a comment:
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Re: [FAQ] Atten 858d problem S-E (or 5-E) or stuck in 498'C.
I tried every input pin with a jumper (both high and low) without any success of finding "the hidden input"
Seems like the device was not programmed with a standby mode but the manual says clearly that it has one ...
I bought the first unit, returned it and now this one has the same problem. I wondered if I could repair it easily but seems like I will also return this 2nd piece of Chinese cr*p !!...Leave a comment:
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Re: [FAQ] Atten 858d problem S-E (or 5-E) or stuck in 498'C.
For the record, here is another PCB to add to the "clones database" ! lol
I re-tested everything and pin 18 on the IC is really switching from 5V to 0V(Wand on the holder)...Leave a comment:
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Re: [FAQ] Atten 858d problem S-E (or 5-E) or stuck in 498'C.
I received a second unit from amazon with the same behavior... weird !
And yes the cpu pin is changing between 0V and 5V.
Anything would prevent the cpu from triggering the input?...Leave a comment:
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Re: [FAQ] Atten 858d problem S-E (or 5-E) or stuck in 498'C.
The standby function isn't working, but that doesn't , mean the Triac is shorted.
It heats properly to whatever temperature I set and then maintains it....Leave a comment:
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Re: [FAQ] Atten 858d problem S-E (or 5-E) or stuck in 498'C.
Actually it matches this schematic (resistor and cap ID are different but circuit is the same....Leave a comment:
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Re: [FAQ] Atten 858d problem S-E (or 5-E) or stuck in 498'C.
That is exactly right...Leave a comment:
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Re: [FAQ] Atten 858d problem S-E (or 5-E) or stuck in 498'C.
I originally thought about it but it controls according to temp setpoint. This part seems to work....Leave a comment:
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Re: [FAQ] Atten 858d problem S-E (or 5-E) or stuck in 498'C.
Hi to all,
I have a Sigma R700 (858D clone) and would like to repair it.
PCB is marked SBK858D 2017.01.03
The heater is always ON no matter it is on the holder or not. I troubleshooted the whole circuit and the reed switch is good.
On microcontroller input P0.1, I get 5V when off the holder and 0V when on the holder.
Am I missing something here ? Any other conditions in the firmware would keep the heater ON all the time ?
Thanks !Leave a comment:
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