New to forum needs help on ZD 916 Soldering station - Page 1
Forum section: electronics / general

author: Priestblood
author_rank: Contributor
timestamp: July 27, 2013, 03:03:34 pm
content: I bought a Soldering station from eBay it was stated that it was faulty and power just switched off when I received and opened it up there were components missing somebody please let me know the component that is missing off the Display board And is labelled as E2 . I have tried to look for the schematics but have not been able to locate it. Any help will be appreciatedRegardsPriestblood

author: John Coloccia
author_rank: Super Contributor
timestamp: July 27, 2013, 07:25:35 pm
content: https://www.eevblog.com/forum/reviews/zhongdi-zd-916-soldering-station/Looks like a tantalum cap.

author: Priestblood
author_rank: Contributor
timestamp: July 28, 2013, 11:41:55 am
content: CheersIt looks like a 10uf 16v tantalum cap but not sure can't find scamatics don't want to guess but cheersI did read that post but pics aren't clear enoughRegardsPriestblood

author: amyk
author_rank: Super Contributor
timestamp: July 28, 2013, 11:59:22 am
content: A missing component might be the least of your troubles.

author: Priestblood
author_rank: Contributor
timestamp: July 28, 2013, 12:02:30 pm
content: Yeh I agree not the best £20.00 av spentDam that eBay,its so addictive?

author: John Coloccia
author_rank: Super Contributor
timestamp: July 28, 2013, 05:44:06 pm
content: Quote from: Priestblood on July 28, 2013, 11:41:55 amSend a message to the guy that posted the teardown. Maybe he has better picture or is willing to take better pictures. Tantalums typically short when they blow up. Is the board discolored? Does it smell like someone let the smoke out of something? There's always the question of why the tantalum blew, but my guess is your power issue is probably a failed cap followed quickly by lots of smoke and a blown fuse (which is probably still blown).Do be careful in that thing...don't kill yourself, OK? I do wonder why a cheap device would use tantalum caps, and especially 10uF tantalums. It's not like it's crowded in there...it's practically empty. You should be able to ring out the board and figure out what that cap is doing. If you really do have a blown fuse, and that's a decoupling cap, it may actually power up OK without the cap in place once you replace the fuse (definitely unplug the iron first so there aren't any great power demands). IMHO, it's still a head scratcher why tantalums are in there in the first place.

author: Priestblood
author_rank: Contributor
timestamp: July 29, 2013, 08:38:23 am
content: Thanks for help, will email him

author: Priestblood
author_rank: Contributor
timestamp: July 29, 2013, 11:11:24 am
content: I did find that he had chopped the wires in the iron and just wound them together without any insulation ,that's one of the problem with buying faulty goods for cheap the DIY amatuer that try to repairs and ends up making things worse.The guy I bought it from said it just went off lol I emailed him and his reply was it was sold as faulty so what ever he tried to do was not relevantWhat a @osser

author: John Coloccia
author_rank: Super Contributor
timestamp: July 29, 2013, 01:03:10 pm
content: Well, this is good, actually. Why did he cut the wires in the iron? Well, whatever...doesn't matter. If he had things shorted out, he could very well have blown up that cap, and that could very well blow the fuse, so you MIGHT be in good shape. You really do need to trace that circuit out and figure out what that cap is doing so you can figure out why it's gone in the first place. If you can't do that, you probably shouldn't be playing around in there.Have you checked the fuse yet? Have you traced out the circuit yet?

author: Priestblood
author_rank: Contributor
timestamp: July 29, 2013, 01:31:10 pm
content: I have traced the problem to a transitor that has blown tooI have orderd new conponants I think that the guy just poked about in it and didn't know what he was checking for and pull the smd cap off the voltage into display board is fine ,I have tested the input power and that seems to be the fault .i can't see any other bits missing or smoked so will replace parts and retrace before power upCheersWayne

author: John Coloccia
author_rank: Super Contributor
timestamp: July 29, 2013, 02:03:46 pm
content: Hah...you may have scored really well here. It's not an expensive station to begin with, but it's a good deal for $20 if it's really just a component and some mangled wiring.