text: <s>[INST] PowerFlex 700 In Precharge Summary: PF 700 staying in Precharge under certain conditions.Hi all, I have a PF700 (20BD156FDAYNANCO) Frame 6 Series B that works fine most of the time. When the power gets cycled to it, it will stay in pre-charge and any residual DC bus voltage will eventually bleed off. I can't find much on the actually power structure of the drive, but from the documents I have gathered in the knowledge base it would seem that the pre-charge board needs replacing. Whenever the pre-charge board is not working, all of the LEDs are off on the board, but when the drive is functioning normally the green LED stays steady like it should. If we let the drive sit for a period of time (varys, but usually 10+ minutes), it will power up like normal. It is going to take a little time to get a board here. So in the mean time, is there anything else I can check? Thanks, DLR. [/INST] Just for clarification, there is an external power supply for the control voltage so the HIM is displaying the In Precharge. Someone here (the plant) thought it was a good idea for the external power supply so we would know what the drive was doing during the times it would not precharge (although, I have repeatedly asked for a precharge board to at least eliminate that component, even if it did not fix the problem). So, it has had this problem for a while now, but just hasn't received the attention it has needed due to the drive eventually working. Also, whenever I said let it sit, I mean with the power off, then turning the power on to it after a certain amount of time (doesn't matter if the external power supply is on or off during this period). Thanks, DLR \\n </s>