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Touch Activated Lamp Transistor Replacement

简介

In this guide, you will be instructed how to repair a transistor in a 3 setting touch lamp. First you will need to take apart the device, followed by a small bit of circuit repair.

An indicator that a transistor has broken on a touch lamp is that it will revert to static “on” and “off“ options.

It is important to note that this is also a general guide, and will not necessarily match your lamp. If you do not already have a replacement transistor ready to use, follow the guide to step 4 and look on the transistor for its specifications so that a replacement can be ordered.

Be sure to unplug your lamp prior to beginning the guide. Soldering is required for this guide, if you do not have soldering skills, check out the How to Solder and Desolder Connections article on the site.

你所需要的

  1. Touch Activated Lamp Transistor Replacement, Transistor: 步骤 1 中的图像 1，2 Touch Activated Lamp Transistor Replacement, Transistor: 步骤 1 中的图像 2，2

    • Failure to unplug device or remove lightbulb may result in damage to device or persons. Always take care when handling electronics.

    • Always unplug device before removing the bulb.

    • Unplug and romove the lightbulb from the lamp to avoid accidents.

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  2. Touch Activated Lamp Transistor Replacement: 步骤 2 中的图像 1，2 Touch Activated Lamp Transistor Replacement: 步骤 2 中的图像 2，2

    • This is a general guide for transistor repair, screw sizes may vary with lamp model.

    • Using the Phillips #00 screwdriver, remove the 5 mm screws holding the bottom plate to the bottom of the lamp.

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  4. Touch Activated Lamp Transistor Replacement: 步骤 3 中的图像 1，3 Touch Activated Lamp Transistor Replacement: 步骤 3 中的图像 2，3 Touch Activated Lamp Transistor Replacement: 步骤 3 中的图像 3，3

    • Remove the bottom panel and locate the circuit box. The circuit box is usually a small plastic container with several wires entering it.

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  5. Touch Activated Lamp Transistor Replacement: 步骤 4 中的图像 1，2 Touch Activated Lamp Transistor Replacement: 步骤 4 中的图像 2，2

    • Be careful not to damage any of the electronic components on the board while prying open the box.

    • Pry open the circuit box with your fingers or plastic opening tool and remove the circuit board.

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  6. Touch Activated Lamp Transistor Replacement: 步骤 5 中的图像 1，3 Touch Activated Lamp Transistor Replacement: 步骤 5 中的图像 2，3 Touch Activated Lamp Transistor Replacement: 步骤 5 中的图像 3，3

    • Locate the transistor.

    • Note the location of the three pins of the transistor.

    • Soldering irons can heat up to excess of 500 degrees Fahrenheit. Take caution when soldering. If you need more information on soldering check out How to Solder and Desolder Connections

    • In this image I am using a pencil to model a soldering iron.

    • On the reverse side of the board, carefully desolder these three pins and remove the broken transistor.

    • Pay attention to the direction in which the new transistor is facing, Solder it in where the damaged one was removed. Ensure that no solder from each of the pins contact each other or any other component.

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结论

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

一条评论

The touch lamp I repaired had a slightly different lighting control box labelled MT-1009A (perhaps it was just an off/on). Anyway I followed the same procedure as above and soldered in a new 3 pin triac (BT134 PH600E) and all worked well. Good pictures, thanks

Dave Empson - 回复

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