4A fuse in 160V DC motor drive board keep blowing

hello fellow guru.. i have a DC controller board which keeps blowing the 4A fuse on the board instantly at the moment i try to run the motor. even after i disconnected the motor. so i think the only left is about the board which i have no idea where to start with
its a 160VDC brushed motor. any tips or guide will be grateful. thanks fellow guru in advance~

First suspects are bridge rectifier and any of the power device on heat sinks.
Max.

MaxHeadRoom78 said:

First suspects are bridge rectifier and any of the power device on heat sinks.
Max.

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thanks alot man ! I'll have a try n get back with the results
Vincent.