Author Topic: Rosin Short Circuit Detector - Does anyone know about this tool?  (Read 1006 times)

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Offline t1d

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I saw this on YouTube:


Is it junk?
How does it work? I saw a comment that said it is similar to an e-cigarette? Maybe it creates a cold water vapor and, when the faulted component heats up, it clears the fog covering that component?
How to get one in the USA? I saw the unit on Ebay, but no rosin chips...

Please and thank you. Cheers!
« Last Edit: July 28, 2021, 05:13:50 am by t1d »
 

Offline ataradov

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Re: Rosin Short Circuit Detector - Does anyone know about this tool?
« Reply #1 on: July 28, 2021, 05:22:36 am »
This is the same thing as you can do with a regular canned air in an upside down freezer mode. It relies on the shorted capacitor heating up.
Alex
 

Offline t1d

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Re: Rosin Short Circuit Detector - Does anyone know about this tool?
« Reply #2 on: July 28, 2021, 05:35:58 am »
Found the answer:

Start after 3:00

Thanks
 
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Online Berni

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Re: Rosin Short Circuit Detector - Does anyone know about this tool?
« Reply #3 on: July 28, 2021, 05:51:57 am »
Yeah this is the same white residue left after soldering iron smoke. The white residue just gets motivated to evaporate once it gets hot enough.

I suppose it is a pretty neat trick. The other way of doing this is to pour some alcohol over the board and watch where it evaporates really quickly. Both of those are better than nothing when you don't have a fancy pants thermal camera.
 

Online SteveyG

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Re: Rosin Short Circuit Detector - Does anyone know about this tool?
« Reply #4 on: July 28, 2021, 09:50:25 am »
Not such a great thing to vapourise in such quantities though  :o
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Offline WattsThat

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Re: Rosin Short Circuit Detector - Does anyone know about this tool?
« Reply #5 on: July 29, 2021, 12:02:15 am »
This is the same thing as you can do with a regular canned air in an upside down freezer mode. It relies on the shorted capacitor heating up.

Beware of using canned air as freeze spray. They now add some rather nasty bitterant agents to prevent kids from inhaling the propellants. Spraying a can upside down to get a liquid will result in drenching your board with this bitterant and if you don’t work with gloves, you’ll know if you ever get the stuff on any mucous membranes. It’s nasty with a capital N.
 

Offline ataradov

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Re: Rosin Short Circuit Detector - Does anyone know about this tool?
« Reply #6 on: July 29, 2021, 12:20:24 am »
Beware of using canned air as freeze spray. They now add some rather nasty bitterant agents to prevent kids from inhaling the propellants. Spraying a can upside down to get a liquid will result in drenching your board with this bitterant and if you don’t work with gloves, you’ll know if you ever get the stuff on any mucous membranes. It’s nasty with a capital N.
That bitterant is not that strong. You will probably not like if you inhale it directly, but in normal use you can kind of feel it, but there is definitely no need to use gloves. I use canned air all the time to cool things and never had any issues with it.
Alex
 

Offline Towger

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Re: Rosin Short Circuit Detector - Does anyone know about this tool?
« Reply #7 on: August 06, 2021, 07:53:54 am »
I would be more worried about sicky rosin residue building up in your lungs and basically everything in the room.
Someone asked where to buy rosin, it can be bought in blocks in any music instrument shop. It is rubbed on bows to increase the friction between the bow and string.
« Last Edit: August 06, 2021, 08:01:36 am by Towger »
 

Online Shock

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Re: Rosin Short Circuit Detector - Does anyone know about this tool?
« Reply #8 on: August 06, 2021, 10:57:53 am »
Rosin isn't what I'm worried about, you probably get years worth of worse from an open fire or gas heater. Just don't breathe it in. The flux you need to worry about is whatever they throw into Chinese flux or the ones not intended for hand soldering.

Anyway rosin in the lungs, just cough it out onto your hands and start your gymnastics routine :).
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Online wraper

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Re: Rosin Short Circuit Detector - Does anyone know about this tool?
« Reply #9 on: August 06, 2021, 11:39:55 am »
This thing has very limited use. IME shorted ceramic capacitors usually heat a few oC above surroundings, so this thing will be completely useless for finding that. Faulty ICs often heat only slightly above normal too. Not to say this thing contaminates everything with rosin. What you really need for such job is a thermal camera (which became quite affordable lately). Everything else is a piss-poor substitute which does not work half of the time (can detect only what's really frying) and is worth to use only if you really don't have the money or it's for a one-off thing you won't do again.
 

Online wraper

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Re: Rosin Short Circuit Detector - Does anyone know about this tool?
« Reply #10 on: August 06, 2021, 11:45:05 am »
Yeah this is the same white residue left after soldering iron smoke. The white residue just gets motivated to evaporate once it gets hot enough.
It melts, not evaporates.
 

Offline DavidAlfa

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Re: Rosin Short Circuit Detector - Does anyone know about this tool?
« Reply #11 on: August 06, 2021, 02:07:55 pm »
It's more like it sublimates.
I've had too much Breaking bad to see that as a tool ;D
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Offline coppercone2

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Re: Rosin Short Circuit Detector - Does anyone know about this tool?
« Reply #12 on: August 06, 2021, 05:14:27 pm »
poor mans thermal

1/30th the price but I would say for a EE, buying a thermal cam is worth it because it opens doors. you learn how to manage a new sensor spectrum

IMO save your 9$ in a slush fund and buy a Ti
« Last Edit: August 06, 2021, 05:17:25 pm by coppercone2 »
 


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