Are you facing the issue of not being able to see the 3D view in Revit after importing a DWG file? This can be a common problem, but fortunately, there are some simple troubleshooting steps you can take to resolve it.

First, check the visibility settings in Revit. Sometimes, when a DWG file is imported, the visibility of the elements in the 3D view may be turned off by default. To fix this, go to the 'Visibility/Graphics' menu and make sure that the 'Imported Categories' are set to be visible in the 3D view.

Next, ensure that the DWG file was properly linked or inserted into the Revit project. Navigate to the 'Manage' tab, and under the 'Manage Links' or 'Import CAD' option, verify that the DWG file is correctly positioned and aligned in the project. Sometimes, incorrect placement can cause the 3D view to display empty or incorrect information.

Another possible cause of the 3D view not displaying correctly is related to the scale of the imported DWG file. If the scale is off, it can make the elements appear too small or too large, resulting in them not being visible in the 3D view. Double-check the scale settings and make adjustments as necessary to ensure that the imported elements are appropriately sized for the 3D view.

In some cases, the issue may be related to the graphics card or hardware acceleration settings on your computer. If these settings are not optimized for Revit, it can impact the display of 3D views, including those with imported DWG files. Go to the 'Options' menu in Revit and check the graphics and hardware acceleration settings to ensure they are compatible with the software requirements.

Lastly, if none of the above steps resolve the issue, consider re-importing the DWG file into Revit. Sometimes, the initial import process may have encountered an error or glitch, leading to the 3D view not displaying correctly. By re-importing the file, you may be able to correct any issues and restore the 3D view to its intended state.

In conclusion, encountering issues with the 3D view in Revit after importing a DWG file can be frustrating, but with the right troubleshooting steps, you can address the problem and continue working on your project with confidence. By checking visibility settings, ensuring proper file placement, adjusting scale settings, reviewing hardware acceleration, and considering re-importing the file, you can tackle the issue head-on and get back to creating stunning 3D views in Revit.