Washing machine cold cycle not working (again)

Hey all, I have an older Estate washing machine (ETW4400XQO). I'd like to hang onto it because it's a larger washer but I'm wondering if it's beyond fixing.

About 2 months ago my washing machine would not cycle any cold water. The inlet filter had no blockages that I could see, and the water line itself flowed water fine when turned on. I wound up replacing the entire inlet valve after finding a part on amazon and it worked perfectly for the past 2 months but now it's back to not wanting to flow cold water again, which is a problem since the rinses are all cold water.

Any idea what's going on?