How different is the 707's heater with the next generation A1008 used in the 470's (802 gun)?
Dumpster rescue of a Hakko 470, needed a new heater A1008 or A1029 which are discontinued. Instead, I did the heater retrofit (conversion from 802 to 809 gun) to A1313 heater. So you need a new sleeve, nut, tips, and seal for the conversion. Pics below for ideas etc.
The A1313 heater (which is a generation after the A1008) they increased wattage, bigger diameter and added the longer tube. The 470's controller board looks at heating element resistance for temperature sensing, there is no dedicated temp sensor.
What I find is the base is not worth that much, despite having the monster vacuum pump. It's the guns that get dropped and broken and are worth almost all of the money. Many surplus 470's for sale... but missing wand. I thought there were Hakko gun knockoffs though on Aliexpress under
"Yihua 948" but you'd have to change the controller to use them, they are 4 wire heaters. Or look at
Proskit.Hakko A1014 Valve Plate fits many models FM-204, FR-400/410, 470, 470B, 472D, 474, 484, 701, 702, 702B, 703B. You can still buy them.