Hi All,
Connector heater packed up after falling over whilst on.
After much head scratching I found an O/C thermal fuse.
I?ve got a replacement (157 degree), I?m planning mechanical fixing with some machine screws and nuts, but was wondering, at that rated temp, would it be possible to solder it? Or would that = another O/C fuse?
TIA
Chris
Assuming you have basic soldering skills, you should be OK.
If you are concerned, you could use the 'heat shunt' trick which was commonly used in the early days of transistors etc. (Early transistors were more prone to damage while being soldered than modern ones.)
All you need for this is a pair of thin-nose pliers. Just use them to hold the lead between the solder joint and the main body of the component while soldering and until the joint cools.
I've soldered them on car resistor packs.
When cutting out the old fuse leave 0.25 to 0.5 of the wire. This allows a mexchanical joint to be made by bending the wire and crimping with a pair of pliers. To solder you need a large (high wattage, 50W) and solder quickly
And if you use the heat sinc idea you can also make the pliers stay on with elastic bands around the handles. Saves growing another arm and hand. Brian
Gosh that takes me back. Havn't done that for decades. (Not that I do much electronics any more).
I still have an actual (normally closed jaws) heat shunt in my toolbox!
Thanks everyone (well, almost everyone!) for your replies.
The fuses have turned up, as have the 2mm machine screws, but no sign of the nuts. So I might give the heat shunt a try.
So, I was ready to get the sodding iron and pliers out, went to the froiler room to get the thermal fuses and thought ?I?ll just check the packet the machine screws came in in case the nuts are also in there......
Yup! All screwed up, tested and working!
About 10 minutes after reading your replies earlier, I thought, I remember dad* telling me about holding stuff with pliers to keep the heat away from the components. Just the other day when I was about 8.
*His soldering iron was a six inch piece of 1/2 inch copper pipe hammered flat at the end. With an old file shoved in the other end for a handle. He used to heat it on a gas ring.
In those days you could buy a house for the amount it cost me to buy a round of drinks in london (slight exaggeration)
They're generally wire ended? Use a heatsink between wire and fuse before soldering. Like you once did with transistors. ;-)
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