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Hi there.
Got dongle with water damage. All corrosion cleaned and broken traces repaired. But I have 3 missing components marked as "PB" it looks like diode but don't know how to find a proper replacement. Please help and thanks in advance
Unfortunately SM labelling is often completely meaningless, and the only way to identify parts is from the service manual for the unit - which is usually not available.
Check the one that's left to make sure it's a diode, and if it's a schottky type or not (you may need to remove it to test it), and replace it with something similar.
However, it doesn't seem to have a stripe to show which end is which, which most diodes do.
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