UYUE 8586 Getting Hot! - Page 1
Forum section: electronics / general

author: NivagSwerdna
author_rank: Super Contributor
timestamp: July 09, 2017, 09:16:53 pm
content: I bought a cheap combined soldering and hot air station about a year back, marked as "UYUE 8586"It has served me well so far but today whilst packing up I noticed the box was VERY hot. I would not expect the box to be hot at all since the working parts are in the hand tools connected via long leads.I turned everything off, unplugged and removed the back cover.It seems the transformer was still very hot... at least 70CDo I have trouble? Or is this a feature!Thanks in advance

author: amyk
author_rank: Super Contributor
timestamp: July 09, 2017, 10:54:27 pm
content: No it's not supposed to get hot... check for shorts (and see if the iron was also glowing red hot! The hot air gun element runs on mains so it won't be that causing the transformer to heat up.) You may also want to check that your mains supply doesn't have a DC component to it, that will also cause transformers to heat up.

author: NivagSwerdna
author_rank: Super Contributor
timestamp: July 10, 2017, 09:11:27 am
content: Oh dear that doesn't sound hopeful then. (things getting hot isn't normally very hopeful though!)I was doing some SMD soldering before hand (and some hot air reflow) and I'm pretty sure I would have noticed if the soldering iron was over-temperature.I will have to take it apart and try and reverse engineer it. There seemed to be lots of wires coming off the transformer i.e. it might have multiple secondaries... I will have to look closer.

author: amyk
author_rank: Super Contributor
timestamp: July 10, 2017, 10:56:57 am
content: The unit being hot after use is rather less concerning than it being hot even when not in use, which is what I thought you were saying from your initial post... Check how much current the iron draws when heating up and idle (should be near 0), it might just be an underrated transformer that isn't designed for continuous duty cycle, or perhaps your mains has some DC offset.

author: NivagSwerdna
author_rank: Super Contributor
timestamp: July 10, 2017, 11:21:16 am
content: Quote from: amyk on July 10, 2017, 10:56:57 amThat's a fair point. I will see how rapidly it heats up during my next soldering session.I would seriously hope that my mains doesn't have a significant DC offset, if it did I would expect quite a few things around the house to be getting hot... that's something that I could measure though.

author: NivagSwerdna
author_rank: Super Contributor
timestamp: July 11, 2017, 11:04:06 pm
content: I used the solder station again tonight... it was unplugged to start with so at ambient temperature. After approx 20mins soldering I felt the case and it was still cool or at most warm. (I had no need for hot air today)I'm wondering if it should not be left plugged in when not in use (and the previous heating was a result of a long time plugged in but not operating).I unplugged it when done!

author: AjA
author_rank: Contributor
timestamp: October 31, 2017, 08:44:27 am
content: Quote from: NivagSwerdna on July 11, 2017, 11:04:06 pmDoes this soldering station showing correct temperature? coz i hear cheap Chinese station have this issue, can you advise whether its worth to buy or it will wast of money,Thanks.

author: NivagSwerdna
author_rank: Super Contributor
timestamp: October 31, 2017, 01:05:46 pm
content: I still use it. Works for me. I have read that it overshoots when warming up so I always give it a second or two before pointing it at anything I care about.

author: AjA
author_rank: Contributor
timestamp: November 01, 2017, 01:06:01 am
content: Quote from: NivagSwerdna on October 31, 2017, 01:05:46 pmMy question is whether this soldering station given you correct temperature while set it on some range? since this station have issue with calibration, let say we need 350-C temp & we set it but actually it given us 330-C or 320-C with hot-air & for iron it may be difference is 50-C so did you actually test this station calibration? of-course it will works as long as it not die...

author: NivagSwerdna
author_rank: Super Contributor
timestamp: November 01, 2017, 02:25:48 pm
content: Quote from: AjA on November 01, 2017, 01:06:01 amIn absolute terms... I have no idea, never measured it. In relative terms.. I have it set and it works.I am a hobbyist. If I was a professional electronic person I would have binned it a long time ago, for me it was cheap and works... I do NOT leave it plugged in when I am not using it though!

author: AjA
author_rank: Contributor
timestamp: November 02, 2017, 01:57:47 am
content: Thanks for reply NivagSwerdna, i already bought this cheap station and now worried whether this station will work or it will fry my board components, since I am also hobbyist but not professional electronic person, but don't want to fry components due to miscalculation & wrong calibration, i am planing to rework QFN IC on my laptop motherboard, since highest Temperature as per data sheet of IC is 260-C so i am worried whether it will fried chip/board,Thanks.

author: NivagSwerdna
author_rank: Super Contributor
timestamp: November 02, 2017, 11:26:32 am
content: Quote from: AjA on November 02, 2017, 01:57:47 amThe tool is up to the job. I am sure there are more experienced people here who can comment on laptop rework but my advice would be.. make sure you pre-heat. I would practice on a scrap board first!

author: AjA
author_rank: Contributor
timestamp: November 03, 2017, 12:45:42 am
content: Thanks NivagSwerdna, appreciated your suggestions & help, waiting for some one more experienced people comment here.

author: NivagSwerdna
author_rank: Super Contributor
timestamp: November 03, 2017, 10:36:45 am
content: Quote from: AjA on November 03, 2017, 12:45:42 amProbably worth asking a question in a new thread since it won't be tool specific.