Before ordering a string of various parts, I would install the logic board in a known good housing (a buddy's phone) and see if the problems were still present. If not, then begin ordering replacement components.
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If the logic board itself was the source if the problem, then that is a bigger fish to fry--but still likely salvageable --although it would require professional assistance.
Before ordering a string of various parts, I would install the logic board in a known good housing (a buddy's phone) and see if the problems were still present. If not, then begin ordering replacement components.