Funny you should mention it Dave I bought the smaller one and promptly fryed it 
Rob
Whats broken on it Rob? I'm surecwe can fix it.... 
Sure mate , shall I stick it in the post


As you can see Bob has been at it

, I now have all the toys to desolder stuff ,,,,,,,,,,,,,,,,,sort of all the gear ,no idea

Smoke was emanating from between the two inductors .

So to see whats what you have to remove the two capacitors from underneath .

To remove the inductors ,

To get to the things that have had the ID scrubbed , for F*&k sake it a friggin toy , why!


These turned out to be N channel MOSFET,s

The diodes test OK

As do the resistors

So can the magic smoke be released and the heater stop working , then the parts test ok under no load ?
It died due to some tit not limiting the max current on his bench PSU
So that's the project , just build it bigger

Rob