General > General Technical Chat
DEADLY WIRING FAULT ; Atten 858D+ Hot Air Rework Station
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DEHiCKA:
I did not say it's the biggest, but it's nice to be sure mains won't short to the ground in your hand. 
Guns for this station sell in china for $6, and I plan to build double PID controlled station myself.
saturation:
Its a fixed temperature version, a simple 'hair dryer'.


--- Quote from: DEHiCKA on September 18, 2015, 08:11:58 pm ---Looks like chepoo $18 version that is selling all over china does not have this stupid interconnect board waiting to kill you. HV wires go stright to the heater:

--- End quote ---
AF6LJ:
Some of this crap that is for sale; scares the living crap out of me.
weilrennwagen:
I received my "WEP 858D" today from eBay. Fully expecting it to be ghetto wired. But for $40... with a guarantee. Can you go wrong?

First thing I did was turn it on to test it. The digital display has multiple burned out/dead segments.

I opened it up. The power input cable has three wires - brown, blue, and green. Brown is supposed to be hot, and blue is supposed to be neutral, but when I continuity tested them back to the plug, the blue wire is hot and the brown wire is neutral! Still, the fuse is on the neutral line.

The ground wire from the handheld unit was grounded to the circuit board via a 24awg wire, but the board isn't grounded to anything. So a few things are wrong so far lol. Haven't taken the handheld unit apart.
cracklincrotch:
Picked up a Sigma R700 hot air rework station yesterday, straight from Amazon.  Came with three tips and a spare heater element, that I wasn't expecting.

Looks just like the rest of the 858 stations.  So, having found this thread the first thing I did before opening it up for further checks was grab the ohm meter and see if I was going to wake myself up by touching the wrong spots later.  Everything was good so far.  Powered it up and everything appeared to me to be working as expected.

I shut it down and cracked it open.  I found the fuse on the neutral side of the 120V and the board isn't grounded.  Nice.  But, for $65CAD it's a whole lot cheaper than that Hakko that my heart wanted.  But the wallet liked the idea of this one much more LOL.  I changed the wiring around and fired it up to re-shrink the connections I'd modified.  Put it all back together and it's all good now.

So long as you know what this thing is for, and you know about these are the potential issues going in to the purchase, you already know how to fix it.  It's a pretty quick fix. 
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