Lou asked ... Mac Allister 35cm electric lawn mower?    |    Ronald Charlwood asked ... Beko fridge/freezer not cold enough?    |    John Broadbent asked ... Advise?    |    suzy asked ... Brother kh-940 not in sync with DAK9 in interactive knitting?    |    Susan asked ... How can I stop my steam iron spraying water with the steam?    |    Click here to ask your question

Dcmd67 resistor problem?

Hello,
I have a treadmill DCMD67 board that is broken. Has burned k15n60 and resistors R63 and R65. The problem is that the resistors as they are burned I can not know their ohmic value. Could you help me? Can you tell me the value of R63 and R65?
It's my dad's treadmill plate and I liked to repair it.
Best Regards
Trivial69, November 2016
330:R63
332:R65

UGUR, August 2017
The burned component k15n60 is an IGBT semi conductor (Insulated Gate Bipolar Transistor) commonly used as a high speed switch in motor control.

Electronic components do not usually just burn up - too much current because of a failure elsewhere is a typical cause. My suspicion is that the motor that the IGBT controls has developed a fault and the specification of the IGBT was exceeded by the current taken by the motor - the K15N60 is rated at 15 Amps 600 Volts.

I also suspect that the two resistors that show signs of burning are in the same motor control circuit. Quite likely the IGBT failed first and acted like a fuse - the resistors just got hot.

If you really need the value of these two R63 & R65 you might unsolder one end of each and measure them in isolation. Also by looking underneath you may actually see their colours.

nevertheless - you should be very suspicious of the motor.

Good Luck..., November 2016