Can Anyone guess the PWM ICs in this circuit?

you're going to want to optoisolate or transformer isolate your output.... 380V is a lot of voltage to have floating around....

sorry,i have many same board and want to rebuild it in new way .
marc, you didin't show the reed switch internal and forgot a diod bitween base of pnp 2sc9012 and R 5k1 .
and +5v goes no where (it's nothing).
think i will start with LM311 first and othres later.

sorry, marc there is no reed switch internal .am trying to show some conections on the pwm board which i note it lately .hope to be usefull.