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| DEADLY WIRING FAULT ; Atten 858D+ Hot Air Rework Station |
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| floobydust:
I see a few safety concerns. The board is dated 2017. Mains "hot" always connects to the fuse first, and here the fuse is on the Neutral (blue) which is a no-no. Apparently they don't have these wire colours in china or russia. It should next go to the mains on/off switch. Check the nozzle is PE grounded as well. NEVER LEAVE THESE PLUGGED IN AND UNATTENDED. youtube vid of these lighting up on fire on their own. I think the triac fails short. The fan transistor could use a heatsink. |
| x79ftw:
I just checked the continuity of the neutral and hot wire on the plug and to my surprise the blue was wired as the hot and the brown is wired to neutral. I tested the unit and it worked fine without issues but i put the multimeter on the ground pin of the 3prong plug and touch the metal on nozzle but there is no continuity. I removed the ground wire that is held on the pcb that rests on the plastic standoff and shaved off some metal on the front panel and case then sandwiched it between the two with the case screw but the nozzle still isnt getting ground continuity when measuring the ground pin and nozzle. Is there something inside the handle itself causing this? |
| floobydust:
Inside my handle I found a terrible ground wire connection to the stainless steel tube. Because of the heat and difficulty soldering, they just wrap the ground wire on a tab and it doesn't make a good connection. One safety happening is the heating element breaks and touches the stainless steel tube. You don't usually touch it... but it is a shock hazard. |
| PlainName:
--- Quote ---Because of the heat and difficulty soldering --- End quote --- Looks a perfect case for a crimp. Wouldn't take more than a few seconds and couple of pence. |
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