Hi
I have a Quecoo T12-958 soldering iron and have noticed the soldering iron tip is not grounded
i dont want to use it like this
I only found out because the chassis ground wire from the ground lug / bannana socket came off
how can I ground the soldering iron tip

What I thought of doing is soldering a wire from the ground leg on the soldering iron tip connector to the ground lug
Would this be ok

There is a earth wire from the PSU to control board but its not connected to anything.

Has anybody tested this product? Posting this question on a Facebook tech group I'm in got a few responses like "that kind of thing corrodes the tips" and "just using normal solder paste is much better" so I'm not looking for generic responses like that, but rather, does anybody know for certain whether this exact product is good or bad for soldering iron tips?

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Hi all,

I am testing a USB powered soldering iron. It's made by Kaiweets but I believe it's also sold under other names.

As a standard test, I checked whether there was any voltage leak from the tip - that said the thing runs on USB-C power delivery so am I correct that the whole unit is floating and not grounded? If I check, I measure 90V at the tip but I have a feeling that that is not relevant? Maybe caused by that capacitor between primary and secondary inside the PSU? I do not see current flowing at all.

In other words, do you think it's expected and...

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I was pretty sure nobody touched it before, but that can't be from factory. There is flux, and capacitor is probably missing.
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There is « O » mark beside. All fuses have the same mark letter on main board. So, I can deduce it's a « O » fuse.
And this correspond to the issus I saw : when I plug the battery, I measure the voltage dropping...

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