this post was submitted on 18 Jun 2023
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Emisar D1K UV emitter fried itself. Bit of a bummer, but I've already reached out to Hank. Anyone else run into this with the 5W UV emitter?

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[–] dmenezes 6 points 2 years ago

@[email protected] is the person you want to talk to about anything UV-related.

[–] Sakowuf_Solutions 6 points 2 years ago* (last edited 2 years ago) (1 children)

Ooh yeah that’s a goner. I wonder what happened. Usually it takes a lot of extended heat to do that and that would be hard to do given the way hank sets up his lights.

It could be anything from a driver fault to a short. Just replacing the led won’t be sufficient.

[–] [email protected] 5 points 2 years ago* (last edited 2 years ago)

Maybe a bad reflow giving poor heat conductivity to the MCPCB? Since the temperature is measured at the MCU, that could result in an LED overheating without the MCU going into thermal protection in time.

[–] FiFoFree 4 points 2 years ago (1 children)

Update: Hank didn't initially see the issue, but showing him the beamshot as well as a few shots of the emitter turned on cleared that up. He's sending a replacement head, shipped accordingly. :)

[–] [email protected] 2 points 2 years ago

Glad he got you fixed up, Hank is the man. I wonder, was the driver misconfigured for that emitter? (ei, outputting higher amperage than what the emitter could take?).

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