80D: ext. flash fires but pictures are dark + built-in flash doesn't fire

[gico62]

Hi,

big drama last night at my daughter's 18th birthday: both flash stopped working.

In the beginning everything was fine with my Canon 80D but then something happened. I gave the camera to another person for a while (but I suppose she did not change any setting). After that I could not use flash anymore: ext. flash started firing too much and pictures were almost white, built-in flash did not fire anymore.

Now, this is the situation:

Built-in flash doesn't fire anymore.

Extrnal flash (Yongnuo EX500 mounted on hot-shoe, E-TTL) fires but pictures are dark (like flash fires before or after the shot).

I'm testin using P program, checking again and again flash settings in camera and on ext. flash, resetting flash settings from menu, resetting camera settings... nothing to do.

Any idea?

Thank you in advance

GC

 

[gico62]

Model Canon EOS 80D
Shutter Speed 1/60 s
F-Number f/4
ISO ISO 400
Exposure Bias Value 0.00 eV
Metering Mode Pattern
Flash On, Fired (and it really did!!!)
Focal Length 32 mm
Lens Model 17-50mm
White Balance Details Auto
Date/Time Original 07/09/2025 08:37:18

 

[Kamguy43]

I have one but hardly do flash. However, I have a Manual flash and set cameral shutter at 1/250. Don't know if this helps..

 

[rsn]

I am wondering if somehow some setting was changed. You might try a camera reset.