Soldering 101 — Smiggy's Guide to Electronics Repair Basics

Welcome to Smiggy's electronics repair basics! Whether you're fixing a vintage computer, repairing a broken gadget, or building a kit, soldering is the fundamental skill you need. Here in my Rainhill workshop, I solder almost every day.

Choosing Your Iron

For general electronics repair, Smiggy recommends a temperature-controlled station. I use a Hakko FX-888D — it's reliable, heats up fast, and has excellent tip selection. Budget option: the Pinecil is brilliant for portable work.

Essential Supplies

• Solder: 60/40 leaded solder (0.8mm) for vintage work, lead-free for modern boards
• Flux: A good flux pen makes all the difference
• Solder wick & solder sucker: For desoldering mistakes
• Brass wool tip cleaner: Keeps your tip tinned and clean
• Helping hands / PCB holder: Third hand tools are essential

The Perfect Solder Joint

A good joint looks like a shiny volcano shape. Here's Smiggy's technique:

1. Clean the tip on brass wool
2. Apply a tiny bit of solder to the tip (tinning)
3. Touch the tip to BOTH the pad and the component lead
4. Feed solder into the joint (not the iron)
5. Remove solder, then remove iron
6. Don't blow on it! Let it cool naturally

Common Mistakes

Cold joints (dull, grainy appearance) are the #1 beginner error. This happens when you don't heat the pad enough. Another classic: lifting pads by applying too much force. Patience is key in electronics repair!

Stay tuned for more Smiggy electronics repair tutorials from Rainhill, UK!