Electronics > Repair
Metcal MX-5000 repaired for not heating up
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gregpl:
Didn't see this posted anywhere so thought it might help someone one day.
Was using my metcal mx-5000 and turned it off to replace tip then it wouldn't
heat up anymore. Everything else would work. When I picked up the iron to use
the bar graph did nothing and of course would not heat up.
Took it apart and found SMD diode D12 bad. SK16 - https://media.digikey.com/pdf/Data%20Sheets/Diodes%20PDFs/SK12-SK16.pdf
Replaced the diode and its working again. Almost bought a new one. Glad I took it apart.
Zucca:
Thanks gregpl, great job!
memed:
Hi.
I have same issue with my MX-5200.
Did Q4 MOSFET was heating up that time?
Diode D12 was shorted?
Thanks
gregpl:
I used an IR camera and could see D12 getting hot. It read shorted. Replaced it and its working now.
I didn't check any voltages or anything else. Just used the IR to see if anything was getting hot.
helpmerepair777:
Hi , im new around here ! ehhe :D
i was going to check this link https://media.digikey.com/pdf/Data%20Sheets/Diodes%20PDFs/SK12-SK16.pdf EDIT : the link is expired
its for the D12 diode , but the link is expired , and I wanted to know what SK12 diode to choose , im getting a used metcal mx-5000 and ordering come stuff from mouser so I told myself , why not get some spare parts , im gonna order thursday so let me know if you have any other spec for this SK12 diode
THANKS ALOT !
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