Canon Rebel Error 30 Seeking Repair Advice

nichols89_ben

Member
Joined
Aug 31, 2024
Messages
1
Location
Washington, DC
Format
Digital
Sorry if this is the wrong place, it looked like the best fit

Canon Rebel T7i/800D Error 30 After Internal Filter Removal

Camera Model: Canon EOS Rebel T7i/800D

Issue:

I recently bought a used Canon Rebel T7i/800D to use as a dedicated astrophotography camera. I attach the body directly to a telescope and control it with astro-specific software. Many people modify this camera by removing the internal filter to allow more wavelengths, beneficial for capturing nebulae.

After using the camera stock for about a year without any issues, I decided to perform the modification myself. I’m fairly technical, have plenty of tools, and felt confident following a YouTube tutorial on removing the filter. I successfully removed the internal filter and reassembled the camera.

However, when I tried to take a shot or load the live view, I got an “Error 30” code. I double-checked all wire connections and sensor alignment but had the same issue. I went further and inspected the shutter blades and springs, ensuring nothing was loose. I removed the blades, reinstalled the springs, and tested the shutter motor with a 5V test. The test worked fine; the shutter operated normally.

After reassembling and verifying all cables, the issue persists. I also tried with and without a lens attached, but the problem remains.

I’ve attached a link to pictures of the assembly and videos showing the shutter test and the camera’s behavior.

Links:


Im fully aware the warranty is no more, and I did this at my own risk, but wanted to see if anyone familiar with repair may see where my issue may be and I can adjust it. Thanks for any advice
 

jvo

Subscriber
Joined
Dec 6, 2008
Messages
1,751
Location
left coast of east coast
Format
Digital
i admire your technical wizardry and photo skills.

I lack the experience to offer any advice and found this in case you hadn't come across it. I did see your query on the canon support forum - also with little response. Folks here will chime in.

Seems it's a fairly common error though none seem in the class of your advanced modifications

Good luck!
 
Cookies are required to use this site. You must accept them to continue using the site. Learn more…