Hi ecoward7,
I'm sorry to hear you are having issues with the flash on your PowerShot SX740 HS. The Busy sign by itself is not an error message. The camera will show Busy anytime the camera is in the middle of process it needs to complete before moving on to the next task. It can be shown for a range of things like if it still needs to clear the buffer after taking a bunch of photos back to back or if the flash needs to cool off and recharge before taking another photo.
So for the flash issue when does the Busy sign start? If you pop up the flash, it hasn't been fired yet, and you see the Busy sign when you try to take a photo that can be a sign of an issue with the flash. That can indicate something like the bulb malfunctioning and being unable to fire. If the Busy sign is showing after you've fired the flash multiple times that is a sign that the flash needs time to cool off before being used again. In that case it is working correctly.
If the camera is giving the Busy sign without firing the flash we would recommend sending the camera in for repair. There aren't any settings that would cause that kind of behavior.
The Canon U.S.A., Inc. online repair portal allows you to set up service in a few simple steps. The repair portal gives you the ability to set up service for multiple pieces of equipment at once, and to receive a repair estimate in the majority of cases, depending on your model and issue. The portal also allows you to upload images or videos that will assist us in repairing your product. You can also select how you wish to be notified of the progress of your repair. The portal's service history section allows you to view all services that have been performed on any of your camera or video products since January 7, 2020.
Please follow the link below to access our online repair portal to arrange for service:
https://mycanon.usa.canon.com/signin
Instructions for Accessing and Using the Online Repair Portal
You will need to access or create your My Canon Account.
If you already have a My Canon Account and your product is already registered, simply click on the “Get Repair Services” link on the left menu and follow the onscreen instructions to arrange for service for your product.
If you have a My Canon Account and your product is not registered, you must register your product first. Click on the “Get Repair Services” link on the left menu, then click on the “Register Product” link on the right. After your product is registered, click on the “Get Repair Service” link on the left menu and follow the onscreen instructions to arrange for service for your product.
If you do not have a My Canon Account, you will need to create one. After you create your account, click on the “Add Product” link to register your first product. After your product is registered, click on the “Get Repair Service” link on the left menu and follow the onscreen instructions to arrange for service for your product.
Once you have completed the repair request, you will have an opportunity to print a copy of the request for your records. This request form will also contain shipping instructions and an address label that you will attach to the outside of your shipping box when mailing your equipment for repair.
