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Hello did you replace the high limit? and just so I am clear it worked fine for a week correct?
The comforter did the high limit in, it blocked too much air. You may want to replace the high limit with a higher temp limit. You can check the felt seals and the seal where the blower meets the bulkhead, make sure all seals are good...but a comforter will restrict too much airflow sometimes and pop these lower high limits on the dryers now.
A bad connection may cause that issue...repair the terminal and try it.