Re: Help with Motor Control Board
if both of those diodes read 0 both ways then they are both shorted. as toasty stated in post 13 you should check those 2 diodes dz1 and dz4 and budm stated in post 7. i'm not the best troubleshooter but i would bet those 2 diodes are part of the problem if not the complete problem just from looking at the burn marks on the board. you said they read 0. is that with the leads of the dmm reversed also? if so you would have to desolder a leg and retest to make sure. if they do read 0 both ways they are both shorted.
if both of those diodes read 0 both ways then they are both shorted. as toasty stated in post 13 you should check those 2 diodes dz1 and dz4 and budm stated in post 7. i'm not the best troubleshooter but i would bet those 2 diodes are part of the problem if not the complete problem just from looking at the burn marks on the board. you said they read 0. is that with the leads of the dmm reversed also? if so you would have to desolder a leg and retest to make sure. if they do read 0 both ways they are both shorted.
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