- #1
Guineafowl
- 762
- 366
This board is out of an appliance test station (Clare A433). The unit tests the Earth circuit, insulation resistance, load current and also has a HV flash probe to check for flashover from live parts to metal casings.
The insulation resistance function is faulty - it’s meant to apply 1 kV ac between L+N and E (ground) and measure the leakage.
I’ve narrowed the problem down to this board:UIKEYINPUTRIGHTARROW
The component PD1 is open circuit. Here are some details of the numbers, but they are hard to read:
Is PD1 a power diode? Do the (obscure) numbers ring a bell? The best I can make out is CP2060A.
Many thanks.
The insulation resistance function is faulty - it’s meant to apply 1 kV ac between L+N and E (ground) and measure the leakage.
I’ve narrowed the problem down to this board:UIKEYINPUTRIGHTARROW
The component PD1 is open circuit. Here are some details of the numbers, but they are hard to read:
Is PD1 a power diode? Do the (obscure) numbers ring a bell? The best I can make out is CP2060A.
Many thanks.