I put a new transistor in mine. It is relatively easy and the part is very cheap.
Find that old thread and there is pretty much detail there on what to order and how to accomplish the repair.

What size watt soldering iron did you fells use?? Also did you use heat sinks when soldering the piece?

I am having a similar problem with my dryer. I replaced the transistor but it still seems to not be working right... however, it is working better.
I'm going to try and replace the transistor again and am wondering what is normal for the blower?

When the blower motor is functioning properly does it continually run while the dryer is on?

heeb8:

You have to take the aluminum housings off of both sides of the motor. This should expose the circuit board allowing you access to the transistor solder pads.
The housing that covered the circuit board end (solder end) stuck on for me and I had to gently pry between the housing and the windings through the cutout where the wiring harness comes through. Just remove the rubber grommet and you will see where to pry. Shouldn't take much since the housings are slip fit.

Question for those who bought new transistors - what markings are you seeing on the actual part you received?
I ordered the KSA733CYTA from Mouser and the part I received has 'A733' on the first line and 'YCJ39' on the second line. I looked on the Fairchild Semiconductor site and it seems to be a valid part, although the date code indicates a lead free component. I know it has been mentioned earlier in this thread that this was a problem. Also, I have the LG motor with the K322A1266Y transistor. Is this going to be an issue using the KSA733CYTA as a replacement?

update: I just tried the 'A733 YCJ39' transistor and the motor did not work. While the dryer was going through the factory test, it looked like the motor would turn half way around then coast to a stop. A few seconds later it would turn the other way and coast to a stop. Never made a full revolution (let alone the required rpm).
I did notice that the transistor case was hot to the touch after soldering. Could I have damaged the device with too much heat?


I did test the inverter board and everything came out OK.

Thanks!

Never mind guys, it took a few tries to remove the blower wheel. Removed it and replaced the transistor with mouser part number KSA733CYTA. Put the motor back together and put all the part back.


Thanks for the research on the transistor part for the blower.:) :) :)