Hello Friend. The transistor replacements bul 312 fp is 2sc6090ls, 2sd2689ls, tt2222, md1802fh, st1802fh, 2sc6092ls, bu1508ax, but12ax, but11apx-1200, buh515xi, bu4508az, but11ax, but12af. I hope this data served you. but first check the polyester capacitors that are close to the tsh. and the filters of 47ufx160volt. luck and regards