Scary youtube reviews. - Page 1
Forum section: electronics / beginners

author: gb243
author_rank: Contributor
timestamp: February 08, 2015, 10:44:59 pm
content: 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.

author: jancumps
author_rank: Unknown
timestamp: February 08, 2015, 11:31:41 pm
content: Name of the blogger says genius though. Should be an expertLike the soldering iron.

author: dannyf
author_rank: Super Contributor
timestamp: February 09, 2015, 01:25:28 am
content: Not sure what beef you have with that particular video.

author: david77
author_rank: Frequent Contributor
timestamp: February 09, 2015, 01:42:19 am
content: 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.

author: JoeO
author_rank: Frequent Contributor
timestamp: February 09, 2015, 02:41:38 am
content: He should have unsoldered both cap leads at once. The iron was large enough.

author: SkyMaster
author_rank: Frequent Contributor
timestamp: February 09, 2015, 03:12:14 am
content: At 8:36, this soldering iron is probably capable of soldering rail road tracks

author: ModemHead
author_rank: Frequent Contributor
timestamp: February 09, 2015, 03:44:52 am
content: Quote from: SkyMaster on February 09, 2015, 03:12:14 am

author: gb243
author_rank: Contributor
timestamp: February 09, 2015, 07:43:07 am
content: 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.

author: electr_peter
author_rank: Unknown
timestamp: February 09, 2015, 10:09:37 am
content: 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 ironAssumption that every video has to have full justification and explanation ofeverythingmakes no sense.

author: Stonent
author_rank: Super Contributor
timestamp: February 09, 2015, 10:17:21 am
content: Lets poke some metal tweezers in there, and hold the board close to the filter cap.

author: Stonent
author_rank: Super Contributor
timestamp: February 09, 2015, 10:26:09 am
content: Quote from: ModemHead on February 09, 2015, 03:44:52 amFor my next trick, I'll show you how to dead-bug solder a Virtex 7.

author: mentaldemise
author_rank: Regular Contributor
timestamp: February 09, 2015, 12:00:25 pm
content: Quote from: electr_peter on February 09, 2015, 10:09:37 amHe mentioned that he reversed the polarity of a cap. Could that have caused the failure? I'm new.

author: dannyf
author_rank: Super Contributor
timestamp: February 09, 2015, 12:14:53 pm
content: QuoteThen that may be the wrong expectation or wrong use of this video.

author: PA0PBZ
author_rank: Super Contributor
timestamp: February 09, 2015, 12:20:18 pm
content: Quote from: Stonent on February 09, 2015, 10:26:09 amFromhttps://www.eevblog.com/forum/eda/dead-bug-soldering-a-256-pin-bga/