John Crighton wrote:

Hello All,
The desoldering gun of my Hakko 700 station is
not heating. The element is OK.
Hakko do not supply schematic information.
I need information on the following parts
to trace the circuit.

AC05D 4YL flat pack made by NEC SCR maybe?
I can't find any data on this part, ratings, lead info etc.

C170IC (an 8 pin integrated circuit)
No luck in finding information on this part also.

All clues greatly appreciated.
Regards,
John Crighton



Most likely the temperature sensor has gone bad. My Weller
did that, the display read 890 F or something like that the
second you turned it on. Yup, the sensor read infinity ohms.
It was expensive, but not as expensive as an entire handpiece.

Jon