its a screen issue, if your motherboard was dead you wouldn't get anything out of the device, like no sound or lights
you probably need to replace the LCD part of your screen
[product|IF216-004]
as this one is out of stock, heres another option
https://www.amazon.com/Mugast-Display-Replacement-Console-Professional/dp/B07NNYP2ZS/ref=d_pb_allspark_dp_sims_pao_desktop_session_based_vft_none_sccl_2_3/131-9210840-7554502?pd_rd_w=bEUJi&content-id=amzn1.sym.6b5008ac-c24a-4aea-a3ea-015a531184f5&pf_rd_p=6b5008ac-c24a-4aea-a3ea-015a531184f5&pf_rd_r=ACREZ3V5WV32DB6QP0M2&pd_rd_wg=CNWHQ&pd_rd_r=b3864517-0e6d-40a6-ad1c-ec39e3070436&pd_rd_i=B07NNYP2ZS&psc=1
[guide|1270]