Canon pixma mg3550 not printing color

The carts on these are unforgiving of sporadic use :-(. I had one of these at one point that used the 240/241, and the others aren't much better. The issue is the ink is short lived on these vs how the printer reads the levels, so the ink tends to run out before they go into the soft stop mode, or they are streaking at the same point in time. Try cleaning it manually with 90%+ alcohol - it tends to bring these carts back. 95% of them are bad cartridges.

First thing I did with mine because I didn't care being I got it from Goodwill is I refilled the cart - that brought it back, and I overrode the soft stop. I don't like DIY refills for $100+ printers (buy reman for cheap-ish CMYK models or OEM for photo grade models), but all of these ultra cheap printers are unsustainable without doing your own refills, using the set you have until the printhead fails (typically 2-3 refills, 3-4 if you are okay with defective prints). That did the job. Just make sure to use the right ink - PGI is Pigment with Canon, CLI is dye. The good thing is if you cause damage from mixing the types you can toss the cartridge and swap another in, Mine was empty with a premature monitor issue. If you are against doing a DIY refill, see if you have a shop like Cartridge World or a Walgreens which does it for you. It will be pricier then buying it and DIYing it, but you don't deal with the mess.