Electronics area: xytronics iron down (de-solder fine)

[Lorin Parker]

All,

The soldering iron on the xytronics station needs to be fixed. The de-soldering iron on the same unit is fine.

For soldering, the weller station is working.

I'll fix it within the next couple days.

Lorin

[Dave B.]

What happened?  There are quite a few spares in box above the area.

-D

Lorin

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[Lorin Parker]

No current going to iron. Might be a blown fuse or a fried power transistor. I've seen similar in similar stations. Not sure till I lift the hood and check the voltages. 

I'd like to fix it, as that iron is a bit more agile than the weller for spall pitch soldering.

Lorin

[Lorin Edwin Parker]

Dave, opened it up and here's the likely: sense switch is not seeing the iron when plugged into the station, so it disables it. I can't find a service manual or tech info on that model online. If you have it, it would help. The extra iron we have at hive is for another model (it has a 5 pin amphenol style connector, this is a 7 pin) There are some test points in the station...

All points on the iron have proper continuity and the element, though somewhat worn is not kaput. I'm not sure what R the sense wires are looking for. If another iron works we can replace the element and it'll probably work. If not, we'll know it's the station PSU / control. It's a simple circuit, but I don't feel like reverse engineering the circuit when there is probably a service manual somewhere that could get me through it in 20 minutes...

Do you have a spare iron for that model you could bring down and plug in? Then we'll know if we need to replace the element or look into the sense circuitry.

Lorin

[Lorin Edwin Parker]

No rush. THE DE-SOLDER SIDE WORKS GREAT. I would like to keep the whole thing in nice shape, though. It's a good iron.

[Dave B.]

I bought it in 02 from Howard Electronic Instruments in Kansas.   It is discontinued.  I dropped off a box of spares with it when I  dropped it off, including a spare iron I thought.  I have more spare parts for my current model which is a lead-free higher wattage unit.  I'll try to see about a service manual.  I can bring in the iron I have but I think it's higher wattage.

-D