Tell us about yourself!
Given that most IC's are temperature rated at 70C (125C max for milspec) and that the gas torch is many times that temperature, component damage is a very real issue.I would suggest buying a good quality temperature controlled soldering iron and a quality solder sucker or a surplus de-soldering machine, you will retrieve more in-tact components and won't run the risk of damaging passive components whilst "Banging" the board against a wooden block.Professional Electronics Engineer since 1978.
I am an electronics engineer with over 40 Years experience designing and building electronic equipment and agree totally with JodyF1. I suggest replacing the power supply here with a good quality 220VAC to 12VDC Plug Pack, readily available from any electronic components supplier.BigRob215275: FYI The international standard for electrical outlets for home and offices is 220VAC, few places outside the USA even have 110/120VAC outlets.
For your 5V supply use a 7805 Voltage regulator and heatsink.