@sn2804 that would be a great start to replace the digitizer
[link|https://www.amazon.com/Timorn-Replacement-Controller-Digitizer-Screwdriver/dp/B0718WWNP8/ref=d_pd_sbs_vft_none_sccl_2_3/144-6781758-9384418?pd_rd_w=OtExh&content-id=amzn1.sym.1e7a0ba4-f11f-4432-b7d8-1aaa3945be18&pf_rd_p=1e7a0ba4-f11f-4432-b7d8-1aaa3945be18&pf_rd_r=8TA6RCTFC5CGAYZHX4JM&pd_rd_wg=GxFjG&pd_rd_r=d8cc949a-2ae8-44fc-bd07-4abccfcb620e&pd_rd_i=B0718WWNP8&psc=1|https://www.amazon.com/Timorn-Replacement-Controller-Digitizer-Screwdriver/dp/B0718WWNP8/ref=d_pd_sbs_vft_none_sccl_2_3/144-6781758-9384418?pd_rd_w=OtExh&content-id=amzn1.sym.1e7a0ba4-f11f-4432-b7d8-1aaa3945be18&pf_rd_p=1e7a0ba4-f11f-4432-b7d8-1aaa3945be18&pf_rd_r=8TA6RCTFC5CGAYZHX4JM&pd_rd_wg=GxFjG&pd_rd_r=d8cc949a-2ae8-44fc-bd07-4abccfcb620e&pd_rd_i=B0718WWNP8&psc=1|new_window=true]
bt if that doesn't work, you could take it to a shop instead of replacing the unit as a whole, as they may know what is wrong