Electronics > Beginners
Soldering station Quicko T12-943 no power
Specmaster:
This is the third T12-943 that I know of that has failed and I'm beginning to wonder if it isn't either the power supply not being stable enough or the actual controller itself. I know that there are other forum members who also use T12 and they are happy with their setup's just like I am with my two. Personally I'd cut my losses on the 943 and invest in the T12-952 complete with supplied Power Supply.
Haggis McHaggis:
--- Quote from: bd139 on May 08, 2019, 02:11:22 pm ---Mine exploded. Check the tip doesn't short anything out in the handle if you push it in and out. That's what finished mine off.
--- End quote ---
Do you mean changing the tip while the unit is powered can cause a short?
Specmaster:
While that should not be possible, it has to said that not all the handles are equal in their construction qualities and likewise with the tips themselves, many have poor contacts and changing tips all the time can cause these contacts to fail completely and cause shorts. I have had some issues with my tips with the contact rings on them coming undone. This one of the reasons why I ended up getting 2 stations so I could keep different tips in each and then use which ever one best suited my soldering requirements at the time and thus minimise the possibility of a short that could blow the Mosfet. I keep a K and C4 tip in my handles for almost all of my work and it works really well.
floobydust:
I mentioned in another T12 thread:
Quicko says T12-943 must be limited to 25VDC max. input voltage :palm:
So any overshoot or surges might be too much.
Some of the low cost 24V PSU's have extra 1k load resistors, but who knows what voltage the PSU gives at light load (heater off).
There is a high risk if the DC adapter (or bench PSU) is already on and then you plug it (DC) into the soldering station, a surge occurs that can make an overvoltage spike and damage the controller. It's due to the cable inductance and capacitors. Best to plug in AC power last.
Haggis McHaggis:
Should we install a voltage peak protection then? If yes, what circuit should be used? Is there a cheap ready made module available for this?
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version