I have a JCD 8898 has a faulty zener diode ,I'm looking for a replacement zener voltage rating.
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JCD 8898 zener diode ratings
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Re: JCD 8898 zener diode ratings
Originally posted by mintostrich View PostIt's a glass zener diode with a single blue line
The below link is a more direct tear down and explanation of the parts which might help you.
https://www.bing.com/videos/search?q...5D&FORM=VDRVRV
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Re: JCD 8898 zener diode ratings
It's a strange soldering station - super cheap at ~$30 and the SMPS power supply looks so small.
MELF diode D5 looks like part of a capacitive dropper arrangement for the top MCU board power. It's just strange that isn't powered by the lower board SMPS and it seems to use a triac for the soldering iron heater (as well as the hot air), which is odd/ The heaters must be all mains powered?
Without clear pictures or a schematic, there's no way to guess the zener's voltage or to figure out the power system.
I would suspect the dropper capacitor failing low value before the zener.
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