Heat Break Problems

[FitzgeraldS]

I have the A20M printer. The hot end keeps clogging up. After several attemps and the purchase of a new 2 in 1 Hot End,
I discovered that the heat break was clogged. I took a gas torch and burned out the heatbreak, to discover what looks like a defuser.
Both my new and old hot end heatbreaks have them.1. Why is this not mentioned in any of the publication about this Printer. 2 Is this part important to the operation of the hotend? Are replacement parts available?

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Please Advise, I like my printer and I want to keep it working.

[William]

Hi，the check ring cannot be removed, it can prevent the consumables from flowing backward.

[FitzgeraldS]

Thank You for your response.
Unfortunately, the rings came out quite easily.
Is there a fix for this?
If not a fix, can I get replacement heat Breaks or do I need to keep buying new hot-ends?
Any help that you provide, will be greatly appreciated.

[William]

If the hot end is clogged, you can try to clean it first.
If it cannot be solved, you can replace it.
You can provide an email, and I will send you a video on how to clean the hot end and replace the hot end.

[FitzgeraldS]

Dear Mr. William
Thank you, I really appreciate your help.
I will be glad to look at the video. Please send video link to the following address: pedalsock@gmail.com
However I would like to explain my situation. A little over a year ago I purchased my Geeetech A20M 3D printer. When I first received it and put it together, it worked great; my students and I love it. Approximately six month later, I developed a clogged and proceeded to remove the nozzle. In the middle of changing my nozzle, there was an electrical short, and I destroyed my controller card. I purchased a control card, and transferred the stepper motor modules to the new board. I moved one marcher at a time, placing it in the same spot on the new board. After I got everything back together, I turned it on and the hot end clogged immediately. I took the hot end part, to discover that the clog was in the heat break. I cleaned the heat break, and it clogged again. If I hand feed the hot end, filament will come out of the nozzle. When I start a print job, it clogs up.
I ordered a new two in one hot end unit. It does the same thing. I really like my printer, but I cannot get it to work. Please help me, I do not know what to do, I do not want to throw my machine away if I can get it working. I Ordered a new 2 in 1 hot end unit, on 16 April 2020. I can't wait to get it, but I am afraid that I will get the same results. I will be glad to look at the video, that you suggest. How ever, do you offer any other suggestions?

Please and thank you.

[William]

Hi, I have sent the link, you can clean or replace the hotend, to see if there is still a problem.