If your Olympus BX40, BX41, or BX45 microscope has power but won’t light up, the issue is often the lamphouse—especially if you’ve already replaced the bulb. In this guide, we’ll walk you through removing the old U-LS30 lamphouse and upgrading to the newer U-LS30-4 model.
Step 1: Check the Bulb First
Before replacing the lamphouse, ensure your microscope’s bulb is functioning properly. The Olympus BX series uses a 6V 30W halogen bulb, and a burned-out bulb is the most common cause of illumination failure. If you need a replacement, you can find a high-quality Osram 30W 6V bulb here.
Additionally, Microscope Marketplace carries a wide selection of replacement microscope bulbs from Osram, Ushio, and Phillips, ensuring you can find the right fit for any microscope brand. Browse all available bulbs here.
Step 2: Removing the Old U-LS30 Lamphouse
If you’ve confirmed that your bulb is functional but the microscope still won’t light up, the U-LS30 lamphouse is likely the issue. Over time, these units can degrade, causing connectivity issues or complete failure.
Watch this video tutorial for step-by-step guidance on removing the lamphouse and replacing it with the new U-LS30-4 model
Step 3: Installing the U-LS30-4 Lamphouse
The U-LS30-4 lamphouse is a direct replacement for the original U-LS30 and provides improved performance and reliability. You can purchase the new U-LS30-4 lamphouse here.
Installation is straightforward:
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Turn off and unplug your microscope.
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Remove the old lamphouse by loosening the screws and carefully disconnecting it.
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Attach the new U-LS30-4 lamphouse, ensuring a secure fit.
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Insert a fresh 6V 30W bulb and power on your microscope to test the new setup.
Get the Right Replacement Parts for Your Microscope
Keeping your microscope in optimal condition is easy with Microscope Marketplace. Whether you need a new lamphouse, bulb, or other accessories, we offer high-quality replacement parts for Olympus and all major brands. Check out our full selection of bulbs and accessories to keep your microscope running smoothly.
Got questions? Feel free to reach out—we’re here to help!