Model Number: GHW9100L
I repaired a friends Hoover Wind Tunnel Canister vacuum today. The unit would only occasionally turn on - but only the vacuum/suction - I couldn't get the power brush head to turn on at all. I was thinking the issue might be in the handle where the buttons were located for: Off / Suction / Carpet-Floor.
I ohmed out the wiring between the canister and the handle up through to the circuit board that contained the switches and everything checked out okay.
Why am I writing about a vacuum in the Whirlpool washer section of this forum? Because I "repaired" this vacuum the same way I repaired a Duet Washer.
Several months ago, my friends washer - the same model as mine, stopped working. They couldn't get the display to come on. I brought home the front panel/display unit and checked it out. It didn't seem like the Control On button was working. I didn't have a spare, but since there are about a dozen of the same switches on this board, I ended up swapping the micro switch on the board with another switch that I thought they probably never or rarely used. After resoldering the switches back in, I found that both switches now worked fine. Problem solved and it's been working fine for about 3 months now.
So, here I am today, looking at what appear to be the exact same micro switches on this vacuum's control board. Since it worked before, I decided to just re-solder the 3 switches on the board. And it worked. I don't think any of this was related to Cold Solder joints, I think the issue might be dirty internal contacts and the heat 'cleaned' them off...
.....but that's just a guess. I had tried contact cleaner previously on the switch with no luck....but the spray probably wasn't getting inside the switch.
So, my questions are;
Do you guys ever troubleshoot to component level and have you found similar issues with these switches? Have I only bought myself a limited fix here or could the resoldering have cured the issue for a long time to come? Finally, if the issue with the vacuum or the washer returns, does anyone have a source to obtain these switches? They are pretty small - square, with 4 legs and a round button switch on top. The entire switch isn't much bigger than a pencil eraser.
Thanks for your thoughts!