[FAQ] Atten 858d problem S-E (or 5-E) or stuck in 498'C.

[senndogg]

Its only a week i have been working with my new Atten 858D+ heating station and i have experienced a problem. The station showed S-E in the digital display, the blower fan was ok but it was NOT heating. Searching the web showed that the heating element was gone, this was an error code, but it was not true. Measuring it showed 70 Ohms. Also the mosfet which drives it was not shorted. The station was also stuck in 498'C sometimes, again no heat.
Browsing again and saw some unresolved topics, there is one at a well-known polish forum. Mine is in warranty too but i was not thinking about shipping it ti China.
After close inspection at the small circuit in the gun, i could distinguish a cold joint at the soldering of the thermocouple sensor. Bingo!
Now the heating is working great again!
Thanks for reading.

First pic is the Atten 858D+. At the moment it is OK, SLP means "sleeping".
Second pic is the culprit.

[retiredcaps]

Originally Posted by senndogg

Mine is in warranty too but i was not thinking about shipping it ti China.

Good job on repairing it.

Someone who lives in Hong Kong theorizes that some sellers in China bank/rely on the fact that shipping defective goods back to China costs so much that most people don't bother.

[budm]

Chinese quality workmanship. I had been to China 5 times to inspect the products they put together for us, after Chinese New Year is over, they always get the new workers since the original workers that were trained went back home for the new year and do not want to come back, so the products made after new years are always problems for us. They just cannot retain their workers which I do not blame the workers at all due to the condition they have to live, they basically live in the dorms on the factory site.

[senndogg]

sad but true. this is claimed to be one of the best "in-home" manufactured heating station but overall quality is far from good.
a friend of mines shipped back a programmer, which by the way was fake, he paid almost the same price for it to be shipped, and they sent back another defective one. trying to contact them was useless. i have heard lots of stories like this, and i am always trying to avoid buying from non-reputable chinese sellers, better paying a little more and get a genuine one. its been 2 months i am buying my caps from badcaps.net and, man! c'mon! the small of original Rubys, nichis and pannys differs from the ugly counterfeit chinese cheapos!
economy is a little tight at the moment but i think we can go through it keeping the pro work up!

[Gabriel]

This was a nice fix - glad you got it working again.

What kind of programmer did your friend buy ?

[senndogg]

i dont know exactly, but it was for automotive use. maybe one for coding Airbag ECUs for VAG family or chrome Mercedes smart keys. I remember that the chinese cheapo was 1/10 of the original price.

[retiredcaps]

Originally Posted by senndogg

a friend of mines shipped back a programmer, which by the way was fake, he paid almost the same price for it to be shipped, and they sent back another defective one. trying to contact them was useless.

If it was purchased through ebay, don't send it back. Open a case and say it is counterfeit and ebay will likely refund the purchase price + shipping.

[senndogg]

nope! they arranged via email and everything was on behalf.

[dihackblo25]

Originally Posted by senndogg

Its only a week i have been working with my new Atten 858D+ heating station and i have experienced a problem. The station showed S-E in the digital display, the blower fan was ok but it was NOT heating. Searching the web showed that the heating element was gone, this was an error code, but it was not true. Measuring it showed 70 Ohms. Also the mosfet which drives it was not shorted. The station was also stuck in 498'C sometimes, again no heat.
Browsing again and saw some unresolved topics, there is one at a well-known polish forum. Mine is in warranty too but i was not thinking about shipping it ti China.
After close inspection at the small circuit in the gun, i could distinguish a cold joint at the soldering of the thermocouple sensor. Bingo!
Now the heating is working great again!
Thanks for reading.

First pic is the Atten 858D+. At the moment it is OK, SLP means "sleeping".
Second pic is the culprit.

i have the 858d+, but the heat is about 100C, not 450c, the seller say is bad the heating coil, the wanna sell the replacement, can you helpme? thanks!!!

[Amraks]

this is my problem there is a short is there anywhere I can buy a new thermo coupler? whats the parts called.

[Agent24]

Is the thermocouple part of the heater? If so you can get the thing here: http://www.ebay.com/itm/858-898-898D...-/360847659151

[jimic12]

Hi, mime give me an "Err", that meas de coil is broke, but is not.
This happend after I move the "CAL" trimmer, so I put it back in the same position and nothing happen.
What do you think it could be?

Greetings

[Agent24]

Perhaps the trimmer has broken when you adjusted it? Check the solder did not break on the leads or something.

[stj]

what is the soldering like?

some of the chinese units are terrible and you need to resolder most of the board!!!

[jmbinette]

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 !

[Agent24]

Whatever controls the heater, probably a Triac, may be shorted?

[jmbinette]

Originally Posted by Agent24

Whatever controls the heater, probably a Triac, may be shorted?

I originally thought about it but it controls according to temp setpoint. This part seems to work.

[stj]

so your saying the standby function isnt working, but it heats to whatever temperature you set?

[jmbinette]

Originally Posted by stj

so your saying the standby function isnt working, but it heats to whatever temperature you set?

That is exactly right

[stj]

not much to it if it matches either of these: