those are the latest update.
i cleaned VR2 with some alcohol, rotate it, the voltage changed to +350 ACV for couple of second then back to the same issue again
i replaced VR2 still same issue.
i found that D6 and D5 are shorted, took them out of circuit and they were fine. tested where they been soldered to and it's shorted . is it suppose to be shorted? i don't think so. but i'm not sure what cause that shortage.