Scary youtube reviews.

[gb243]

I was looking at some reviews of the cheap and cheerful 'lab' power supplies (YIHUA PS-3010D for example). The construction was poor but with potential. Old fashioned in a way (2n3055s and LM741s) but adequate. Also some really nasty CUT killing transients.

What did scare me were some of the reviewers who gave the kit a thumbs up after only connecting a voltmeter/ammeter. The covers were not even removed and no transient check. Then we have this:- . I am not picking on this guy but contrasting it to the eevblog where David produces such high quality output that I have a chance to improve my pitiful knowledge.

[jancumps]

Name of the blogger says genius though. Should be an expert

Like the soldering iron.

[dannyf]

Not sure what beef you have with that particular video.

[david77]

Anybody else think he'd be better of getting a bigger iron? That weedy thing he's got there can't have very good thermal capacity.

And I've learned that a broken PSU is still a usefull tool.

 

[JoeO]

He should have unsoldered both cap leads at once.  The iron was large enough.

[SkyMaster]

At 8:36, this soldering iron is probably capable of soldering rail road tracks 

[ModemHead]

At 8:36, this soldering iron is probably capable of soldering rail road tracks 

   

[gb243]

My main point is I use videos as a means of self-education. Some like eevblog are very good. Others not so.  I also see our friend has produced another video where he uses the said power supply straight across a range of larger and larger caps and then shorts them out with a screwdriver.   I know youtube is full of this sort of thing but maybe David could do a basic 'This is not a good idea' video as a warning against self-destructive curiosity. Or would that just encourage more people?

This video looks at the same subject but is actually useful.

[electr_peter]

I do not understand what is the grief with the original video. Video is showing that crap PSU failed because of unidentified reason and will be replaced. And I like that SMD iron
Assumption that every video has to have full justification and explanation of everything makes no sense.

[Stonent]

Lets poke some metal tweezers in there, and hold the board close to the filter cap.

[Stonent]

At 8:36, this soldering iron is probably capable of soldering rail road tracks 

   

For my next trick, I'll show you how to dead-bug solder a Virtex 7.

[mentaldemise]

I do not understand what is the grief with the original video. Video is showing that crap PSU failed because of unidentified reason and will be replaced. And I like that SMD iron

He mentioned that he reversed the polarity of a cap. Could that have caused the failure? I'm new.

[dannyf]

My main point is I use videos as a means of self-education.

Then that may be the wrong expectation or wrong use of this video.

[PA0PBZ]

For my next trick, I'll show you how to dead-bug solder a Virtex 7.

_{From https://www.eevblog.com/forum/eda/dead-bug-soldering-a-256-pin-bga/}