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crwdns2892124:0crwdnd2892124:0Tefal Turbo Pro 400 Steam Iron Disassemblycrwdnd2892124:0crwdne2892124:0

crwdns2892146:0Philip Le Richecrwdnd2892146:0crwdne2892146:0

crwdns2875918:0crwdne2875918:0 crwdns2892120:0crwdne2892120:0 Philip Le Riche

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Introduction
In my limited experience steam irons can be difficult to take apart. Maybe I just got lucky, but this one came apart quite easily allowing the fault to be identified if not fixed.
Very many different models of steam iron have appeared over the years (this one had been giving good service for around 25 years) and they all work on the same principles. Methods of construction are largely similar, the main challenge tending to be gaining access to a screw near the front, usually under the top handle cover, which itself can be tricky to find out how to remove.
Disassembly will allow you access to the thermostat and other electrical connections, which can then be cleaned up, possibly fixing the fault.
Summary
Steam irons probably fail more often than not through water leaking where it shouldn't but disassembly can be challenging. This iron may be typical of many other models.