(DIR) Return Create A Forum - Home --------------------------------------------------------- Lionel Trains (HTM) https://lioneltrains.createaforum.com --------------------------------------------------------- ***************************************************** (DIR) Return to: Power & Control ***************************************************** #Post#: 1491-------------------------------------------------- Solder? By: Chaser95 Date: February 4, 2017, 2:52 pm --------------------------------------------------------- I am attempting to change the power cord on a TW transformer. To get to the terminals I will have to remove a bracket above it which requires disconnecting a couple of wires. I first tried to heat the solder with a pen and then a Weller 8200 100-140 watt gun. I still have not melted the solder to break the connection. How much power does it take? The tip on the gun has been cleaned and re-tinned for proper heat transfer. I get a little smoke but, no melting. Do I need more power? Thanks! #Post#: 1492-------------------------------------------------- Re: Solder? By: TrainLarry Date: February 4, 2017, 7:52 pm --------------------------------------------------------- You need more heat than your 140 watt gun can deliver. A 260 watt gun like the Weller D550 (HTM) http://www.weller-toolsus.com/soldering/guns/weller-d550-gun-soldering-professional-d550.html (HTM) http://www.weller-toolsus.com/soldering/guns/weller-d550-gun-soldering-professional-d550.html<br />is what you need for those heavy terminals and wire. Larry #Post#: 1494-------------------------------------------------- Re: Solder? By: Chaser95 Date: February 5, 2017, 2:53 pm --------------------------------------------------------- I was afraid that was the problem......... Now the search is on! I know they made a higher wattage D550 in the past. I will see if I can find one of those. I was hoping it was just my ignorance! Thank you for your knowledge and kind response. *****************************************************