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Anyone any good at soldering...

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sickpup
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Joined: 21 Apr 2004
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PostPosted: 10:46 - 16 Oct 2020    Post subject: Anyone any good at soldering... Reply with quote
circuit boards and up for some work, I'm happy to pay?

Got a few of these controllers for heated jackets and they either need new thermal fuses, top right in the picture or new on/off switches on the left.

Anyone got the skills to sort these out? I can supply the fuses and switches.

https://cdn.bcf.44bytes.net/files/20201016_114042.jpg
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c_dug
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PostPosted: 12:44 - 16 Oct 2020    Post subject: Reply with quote
How many is a few?

If it's literally just 3 or 4 of them I can ask one of my electronics guys to do it when they have a quiet few minutes.

I come through your sort of way on my commute or you could drop them to the museum if you're ever in South Ken.
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sickpup
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PostPosted: 12:50 - 16 Oct 2020    Post subject: Reply with quote
It would be 2,3 or 4. Got a few each with asingle fault, quite happy to buy your chap a few beers for the work or pay him some cash in an Oliver North style.

Won't be for a couple of weeks, about to start a 12 night shift.

Thanks for the offer, it's appreciated. I'll get back to you over it Thumbs Up
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c_dug
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PostPosted: 12:53 - 16 Oct 2020    Post subject: Reply with quote
Sure, fyi I'm in Hong Kong for work for the best part of three weeks from the 31st October.

I can probably still sort something out from there as I'll still be in contact with my team, but it would be much easier to arrange before or after then if possible.
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sickpup
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PostPosted: 13:31 - 16 Oct 2020    Post subject: Reply with quote
c_dug wrote:
Sure, fyi I'm in Hong Kong for work for the best part of three weeks from the 31st October.

I can probably still sort something out from there as I'll still be in contact with my team, but it would be much easier to arrange before or after then if possible.


After would be fine, I have 12 day shifts all the way through to April so no rush.
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Easy-X
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PostPosted: 15:59 - 16 Oct 2020    Post subject: Reply with quote
I recently bought myself a Chinesium desoldering iron - hollow tip, solder suck built into the handle - and it works quite well. Any particular reason you don't want to do this yourself?
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oilyrag
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Joined: 07 Oct 2020
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PostPosted: 17:01 - 16 Oct 2020    Post subject: Reply with quote
With a cheap iron and some lead solder you could easily replace those two parts yourself.
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c_dug
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PostPosted: 17:25 - 16 Oct 2020    Post subject: Reply with quote
I get the point about DIY being possible, but the alternative I've offered is a repair FOC by one of my very experienced electronics engineers (of which I have 4 working for me), part of our recruitment process is literally PCB component replacement. DIY would seem a silly choice in comparison? Laughing
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TbirdX
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Joined: 06 Dec 2015
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PostPosted: 17:32 - 16 Oct 2020    Post subject: Reply with quote
Which museum c_dug?
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c_dug
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PostPosted: 17:59 - 16 Oct 2020    Post subject: Reply with quote
Science
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jeffyjeff
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Joined: 02 May 2020
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PostPosted: 22:48 - 16 Oct 2020    Post subject: Reply with quote
sickpup wrote:
quite happy to buy your chap a few beers for the work or pay him some cash in an Oliver North style.

What this? As I recall, Oliver North became well-known for his skill at driving a shredder, lol.
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WD Forte
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Joined: 17 Jun 2010
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PostPosted: 00:30 - 17 Oct 2020    Post subject: Reply with quote
C-dug's guys would probably check and reflow those mosfets as well
some rough looking joints on those.
With all those through holes, I wonder what's on the other side of the PCB,
some PWM control or similar circuitry to drive the mosfets I'd guess.
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TbirdX
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PostPosted: 08:39 - 17 Oct 2020    Post subject: Reply with quote
c_dug wrote:
Science


Just wondered, I've spent a fair bit of time working in the V&A myself.
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ThatDippyTwat
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PostPosted: 09:01 - 17 Oct 2020    Post subject: Reply with quote
oilyrag wrote:
With a cheap iron and some lead solder you could easily replace those two parts yourself.

Thermal fuses can be a royal pain to replace, depending on the temp they're set to blow at. Wave soldering (how they're manufactured) typically doesn't get them hot enough to blow, but your average bloke with an iron will usually kill them outright.
You usually solder in some sort of plug/socket and crimp them into that to effect DIY repairs.
The switches are a straight replacement and commonly available.
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Easy-X
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PostPosted: 11:13 - 17 Oct 2020    Post subject: Reply with quote
c_dug wrote:
I get the point about DIY being possible, but the alternative I've offered is a repair FOC by one of my very experienced electronics engineers (of which I have 4 working for me), part of our recruitment process is literally PCB component replacement. DIY would seem a silly choice in comparison? Laughing


I'm a great believer in self-reliance but then again I'm a great believer in any old excuse for beer to make an appearance Very Happy
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oilyrag
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Joined: 07 Oct 2020
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PostPosted: 12:23 - 17 Oct 2020    Post subject: Reply with quote
ThatDippyTwat wrote:
oilyrag wrote:
With a cheap iron and some lead solder you could easily replace those two parts yourself.

Thermal fuses can be a royal pain to replace, depending on the temp they're set to blow at. Wave soldering (how they're manufactured) typically doesn't get them hot enough to blow, but your average bloke with an iron will usually kill them outright.
You usually solder in some sort of plug/socket and crimp them into that to effect DIY repairs.
The switches are a straight replacement and commonly available.


Good point. I didn't think about that
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c_dug
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PostPosted: 14:12 - 17 Oct 2020    Post subject: Reply with quote
TbirdX wrote:
c_dug wrote:
Science


Just wondered, I've spent a fair bit of time working in the V&A myself.


Ah cool, I know a few of their technicians. What do you do?
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colinM
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Joined: 02 Oct 2020
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PostPosted: 16:25 - 17 Oct 2020    Post subject: Reply with quote
I see a few people have already replied to this but I do electronics repair as a hobby I have a full setup for doing soldering work (professional irons,hot air stations, microscopes etc)

this looks like a pretty simple job.

I'm in Scotland
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ThatDippyTwat
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PostPosted: 17:11 - 17 Oct 2020    Post subject: Reply with quote
colinM wrote:
I see a few people have already replied to this but I do electronics repair as a hobby I have a full setup for doing soldering work (professional irons,hot air stations, microscopes etc)

this looks like a pretty simple job.

I'm in Scotland


Thermal Fuses. Probably not straightforward.

Sickpup - What temp is specified on the fuse?
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sickpup
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Joined: 21 Apr 2004
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PostPosted: 18:34 - 17 Oct 2020    Post subject: Reply with quote
Easy-X wrote:
I recently bought myself a Chinesium desoldering iron - hollow tip, solder suck built into the handle - and it works quite well. Any particular reason you don't want to do this yourself?


I don't have the soldering skills a the moment or the time to learn due to the excessive hours I'm working.
The controllers can't easily be replaced, they haven't made them for over 10 years so I can't really risk learning on the job with them and to replace with alternatives would cost about £60 each and not work so well.

Oli North was the king of the clandestine back hander.
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Islander
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Joined: 05 Aug 2012
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PostPosted: 19:37 - 17 Oct 2020    Post subject: Reply with quote
ThatDippyTwat wrote:

Thermal Fuses. Probably not straightforward.

Sickpup - What temp is specified on the fuse?


Simple enough, you use a clip on heat shunt on the lead next to the component - a bit like miniature self closing tweezers. You also work quickly. The first precaution is belt and braces, working quickly means that the fuse won't get that hot anyway. Thumbs Up
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TbirdX
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PostPosted: 19:49 - 17 Oct 2020    Post subject: Reply with quote
Quote:


Ah cool, I know a few of their technicians. What do you do?


Contractor, look after the biometric access control and other security stuff.[/quote]
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colinM
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Joined: 02 Oct 2020
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PostPosted: 00:39 - 18 Oct 2020    Post subject: Reply with quote
Islander wrote:
ThatDippyTwat wrote:

Thermal Fuses. Probably not straightforward.

Sickpup - What temp is specified on the fuse?


Simple enough, you use a clip on heat shunt on the lead next to the component - a bit like miniature self closing tweezers. You also work quickly. The first precaution is belt and braces, working quickly means that the fuse won't get that hot anyway. Thumbs Up


👍 You can also pre-heat the board to make the process quicker, thermal shunt/heatsink like you suggest. They also usually have a few seconds at soldering temp for installation which will be documented in the datasheet.
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sickpup
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Joined: 21 Apr 2004
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PostPosted: 14:07 - 18 Oct 2020    Post subject: Reply with quote
ThatDippyTwat wrote:
Sickpup - What temp is specified on the fuse?


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