freezing after battery running low; new battery doesn’t help

My old friend stopped working after I used it when the battery was very low. I believe, it tried to go to a waiting regimen; and screen now shows one of the pictures, but inverted with number of white horizontal lines. I did charge it many times, but the device never revived. I suspected battery death and decided to buy a new battery. Unfortunately, it did not help at all. I tried many times to press and hold power button for 30-40 sec. Did not work. I charge it almost every day, but it seems something wrong with other things. I feel that there is not enough impulse for initiation. And may be battery is not charging well (I did not measure voltage yet), or its controller is not working. Any advice much appreciated.

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