So my spindle drive breaking doesn’t work. As it tries to brake it will brake then coast the brake Until it stops but this takes a while.
The resistors at the top seem good measuring 13ohms for a dual resistor but I cannot put a new fuse in as it burns out immediately. Firstly the one of the transistors at the top of the drive was blown out so I replaced that. But it still does the same thing seems like as soon as the drive is powered on and the dc bus has power it’s being drained straight to the resistor. The transistors I replaced looked like what sent the dc bus to the resistor but I’m not sure. Does anybody have a schematic of the drive or at least the regem circuit? I read on a forum somewhere that it may be the other large transistors on the drive but I couldn’t find those locally to replace them at the time and they seemed ok. Anybody have any hints clues or things to look for? I don’t want to pay half of what I payed for the machine for a new drive.