AXBB charge pump fault

[john swift]

Its a pity they had not used a DIL (dual in line ) octal transistor array like the ULN2803
or a new FET array
like the Toshiba TB D62381A series DMOS transistor array
that would enable the user to plug in a replacement





If the AXBB controller was mine I would remove the AA6 FET
To prove the 74HC14 and resistors that drive the FET are OK

then either replace the AA6 FET with a
Vishay Si2306DS if it has the same footprint



John

plan B could be link the Gate & Drain PCB pads

that would enable the use of a relay and an external relay driver

for example

after checking the boards details



https://www.ebay.co.uk/itm/24V-TOP-A...592caec3ec0e9d