💡 DIY Repairing LED Bulbs (60W to 100W) – Step-by-Step Guide

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💡 DIY Repairing LED Bulbs (60W to 100W) – Step-by-Step Guide



LED bulbs are Guidey-efficient and long-lasting — but like all electronics, they can stop working. The good news? You can repair most 60W to 100W LED bulbs at home with basic tools and safety care.

This guide is perfect for electronics hobbyists, shopkeepers, or anyone who loves DIY repairs.

🛠 What You’ll Need

  • Screwdriver (flat or Philips head)

  • Soldering iron and solder wire

  • Multimeter

  • Replacement SMD LEDs, driver circuit, or resistors

  • Insulated gloves (for safety)

  • Super glue or heat-resistant tape

⚠️ Important Safety Tips

  • Always unplug the bulb before opening

  • Wait until the bulb cools down

  • Wear gloves to avoid electric shock or sharp edges

  • Don’t touch live wires

🔍 Step-by-Step Repair Process

✅ Step 1: Open the Bulb

  • Use a flat screwdriver to gently pry open the diffuser (the white plastic cap).

  • Some LED bulbs have clips or glue; be careful while opening.

✅ Step 2: Inspect the Circuit

  • You’ll see a circular LED plate and a small driver circuit behind it.

  • Look for burnt LEDs, damaged components, or loose wires.

✅ Step 3: Test the LEDs

  • Use a multimeter in diode mode to test each LED.

  • A working LED will glow slightly or show 0.6V–0.8V.

  • A dead LED will show OL (open loop) or no response.

✅ Tip: One dead LED can break the whole series!

✅ Step 4: Replace Faulty LEDs

  • Desolder and remove dead SMD LED(s)

  • Replace with a new one of the same rating (usually 1W 3.2V per chip)

  • Make sure polarity (positive and negative) is correct

✅ Step 5: Check the Driver

  • If all LEDs are good but the bulb still doesn’t work, the driver circuit may be faulty.

  • Test the output voltage (usually 24V to 48V depending on the bulb)

  • Replace with a matching driver if needed

✅ Step 6: Reassemble the Bulb

  • Once fixed, carefully place everything back

  • Use glue or tape to secure the diffuser

  • Plug in and test!

🧠 Common Faults & Fixes

IssueLikely CauseFix
Bulb doesn’t turn onDead LED / driver issueTest & replace faulty part
Flickering lightLoose connection / weak driverRe-solder or replace driver
Dim or uneven lightingOne or more weak LEDsReplace weak LEDs
Smell or burn marksBurnt componentReplace damaged part

🧰 Where to Buy Parts?

In Pakistan, you can buy LED parts from:

  • Hall Road, Lahore

  • Saddar, Karachi

  • Online stores: Daraz, Symbios, Robu.pk

Look for:

  • SMD 5730/5630 LEDs

  • LED driver circuits (24V, 36V, etc.)

  • Thermal paste (for heat transfer)

🎯 Final Thoughts

Repairing 60W to 100W LED bulbs is simple, affordable, and satisfying. With a little practice, you can save money and even start a small repair business. It’s a great way to learn electronics too!

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