Don asked ... Find the charger or how to convert the battery?    |    Tanzania asked ... How can i mend my sanyo fwbp505f q?    |    Mark Goodwin asked ... Mount field 725m ride on mower?    |    Joan Sorrentino asked ... Barcalounger issue?    |    David asked ... Not starting until I bang door closed?    |    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
link Click here to see other fixes for DCMD67.