On this page I will go through the operation of the GHD Mk4 to Mk5 pcb to help people with fault finding and repair of the pcb.
what the pcb components do
|D2, R1||Frequently counter of mains input|
|R5, R6||Measure input voltage|
|R10, C1, D9, C7 , C6||Power supply and smoothing|
|R7, R3||Pull up or pull down resistors|
The other components are easy to work out so I have not added their descriptions.
GHD PCB Repair service
We also offer a PCB Repair service at £6 per PCB when you send over 5 or £7.50 when you send 4 or less.
To book a repair click on our booking form.