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Timer Switch Relay Replacement

Introduction

The guide shows how to replace the relay (transformer) in a timer switch. This transformer is used for heater control. Without this transformer, the switch does not work.

The timer switch was bought at Gamma (link), a large construction store.

What you need

  1. Timer Switch Relay Replacement, Relay: step 1, image 1 of 2 Timer Switch Relay Replacement, Relay: step 1, image 2 of 2

    • Locate the screw holes.

    Edit

  2. Timer Switch Relay Replacement: step 2, image 1 of 2 Timer Switch Relay Replacement: step 2, image 2 of 2

    • Use the #1 Phillips head screwdriver to remove the screws. This may cost some prying effort.

    Edit

  3. Timer Switch Relay Replacement: step 3, image 1 of 2 Timer Switch Relay Replacement: step 3, image 2 of 2

    • Open the case by pulling the back case from the front case.

    Edit

  5. Timer Switch Relay Replacement: step 4, image 1 of 3 Timer Switch Relay Replacement: step 4, image 2 of 3 Timer Switch Relay Replacement: step 4, image 3 of 3

    • Use the #1 Phillips head screwdriver to remove the screws on the inside.

    Edit

  6. Timer Switch Relay Replacement: step 5, image 1 of 3 Timer Switch Relay Replacement: step 5, image 2 of 3 Timer Switch Relay Replacement: step 5, image 3 of 3

    • Pull the PCB (printed circuit board) from the case.

    Edit

  7. Timer Switch Relay Replacement: step 6, image 1 of 3 Timer Switch Relay Replacement: step 6, image 2 of 3 Timer Switch Relay Replacement: step 6, image 3 of 3

    • Locate the relay.

    • Locate where the relay is connected to the PCB.

    Edit

  8. Timer Switch Relay Replacement: step 7, image 1 of 3 Timer Switch Relay Replacement: step 7, image 2 of 3 Timer Switch Relay Replacement: step 7, image 3 of 3
    Tool used on this step:
    Desoldering Pump
    $3.99
    Buy

    • Melt the solder with the soldering iron.

    • Don't burn yourself by touching the hot soldering iron tip.

    • Use the desoldering pump to suck up the old solder.

    • Pull the relay from the PCB.

    Edit

  9. Timer Switch Relay Replacement: step 8, image 1 of 2 Timer Switch Relay Replacement: step 8, image 2 of 2

    • Put a new relay at the same place as the old relay.

    • Use new solder and the soldering iron to connect the new relay to the PCB.

    • Don't burn yourself by touching the hot soldering iron tip.

    Edit
Conclusion

To reassemble your device, follow these instructions in reverse order.

One other person completed this guide.

1 Guide Comment

Very nice instruction, also for maintaining gardening equipment as a robotic lawnmower.

theodevries - Reply

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