This fairly common power supply has a very silly flaw involving the choice of assembly hardware. It also has what I would describe as justacceptable separation of tracks with no antitracking slots.
These power supplies are the type normally seen lying loose in shop windows connected to badly installed LED tape and with their open live terminals perilously close to random metal junk in the vicinity and the aluminium window frame.
The hot diode issue is why I always recommend underrunning these power supplies for a much longer lifespan.
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