@ Liudr, I found a Hakko 936 for $50.00 and I bought it. I got it from Electrodragon but I think they've sold out.
You might get lucky but if I had it to do over again I'd build one. The reason I didn't was that I found the schematic after I bought the iron.
The one I bought is a 220V version but with a step-up/isolation transformer I can use it on 120VAC and I gain an isolation transformer for my O'scope.
I do have a copy of the thermal controller schematic and it would be easy to duplicate as it only uses an LM358 and perhaps a dozen other parts.
The Irons can be found where ever and shouldn't cost more than $12.00. I bought a new one about a year ago for my old 907 (same 24V ac iron for all) and I've seen a few since then. If you have a 24V 3A transformer and an LM358 all you need really is the schematic and I just attached it to this post.
When I used that iron in production I think perhaps I bought 10 tips in 2 years and that was for four irons. Extremely long lasting.
Bob
