Hotpoint WD61 motor fails to run?

Problem with Hotpoint WD61 washer dryer: this may be a bit old now but it’s quite “low mileage” and doesn’t leak! I am very loathed to buy a replacement motor/ control board or even whole machine £££!!!

It is frustrating that more info is not available and am possibly condemned to spending £100 for a new motor to find out that it was something else (more £££!) at fault!

Came to do wash & found that the machine was completely dead. Replaced 13A fuse in plug. Subsequently the machine will only fill and drain out water- the timer tries to work but hangs but has to be helped - is it waiting for an event that never happens? Also the condenser unit motor runs seemingly OK.

The main motor will not attempt to run at all.

It would seem to be a “GDA” motor.

I have done some simple continuity checks around the motor (easy stuff first-rather than delve into complexities the electronic controller) and the windings and brushes are OK, BUT the connection to one of the brushes has a small component in line that sits on the laminated field coil frame. This seems to be open circuit and on face value would cause the motor to fail.

The component has Texas Instruments on it and some numbers-15AM252A 15K7S on the metal case and a 15A14 252A970A on the transparent plastic sleeve, but I cannot find any info on this on WWW search (including TI.com)

I can only speculate, although not totally convinced, that it’s a thermal cut-out. What goes against this is that it is not actually in good thermal contact with the frame, being in a plastic sleeve and pad. Alternative thoughts are that since it is in the B field of the field coil and is a TI component it is a semiconductor device and may be something like a Hall Effect sensor- but why in series with the armature???

What is this component and if it’s o/c with a DMM. has it failed, and can it be replaced?? Is there any source of service info on these machines?

wageslave
February 2008