Author Topic: WTA 3500 UC 80/IV Bosch Dryer  (Read 10160 times)

Offline Jake

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WTA 3500 UC 80/IV Bosch Dryer
« on: June 03, 2008, 01:43:12 PM »
I know very little about Bosch Applainces, anyone run into this problem before:
http://www.applianceblog.com/mainforums/showthread.php?t=13282
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Offline Penguin45

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Re: Bosch Dryer
« Reply #1 on: June 03, 2008, 06:56:09 PM »
Hi Jake,
It'll be a WTA3500UC/08. Digital control vented tumble dryer. Faults which will stop the machine running are door switch, door hook and PCB. If start activates the machine but the drum doesn't run it's a capacitor start/run motor - capacitors do fail.

Use www.bshappliancecare.com and follow links into eShop for schematics and parts listings. Use model number as above.

Cheers,
Chris.

Offline Jake

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Re: Bosch Dryer
« Reply #2 on: June 04, 2008, 03:01:38 AM »
Thanks Chris. O0
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Appliance Repair School 1987-1988
Star Appliance Tech. 2 yrs. 1988-1990
Wards Appliance Tech. 11 yrs. 1990-2001
Sears Appliance Tech. 4 yrs. 2001-Oct. 2005
Jake's Appliance Repair Nov. 2005-present

Offline Mr. G

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Re: Bosch Dryer
« Reply #3 on: June 05, 2008, 07:43:53 PM »
A.J.,

I checked the cap with a analog simpson meter.  It checked good.  The motor windings read about 27 ohms.  54 ohms in series. The cap looked good:  no burn marks no bulges.  Any other suggestions?  Do you think the cap checks good under static conditions but fails when you apply voltage?  I have seen diodes check good staticly but fail under operational conditions.  Any other ideas?  My original blog said that the dryer lights come on and function switch seems to work.  The start button is pushed and the drying light comes on but no motor movement.

Offline Penguin45

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Re: Bosch Dryer
« Reply #4 on: June 06, 2008, 06:57:48 PM »
With the lid off, will it start if you push the drum round (careful....!)?

I have forwarded a bunch of Tech info to AJ - hopefully he will forward it to you soon.

Penguin45.

Online AJ

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Re: Bosch Dryer
« Reply #5 on: June 06, 2008, 07:09:43 PM »
You can find the information that Penguin45 sent me here.

Bosch WTA34 WTA35 Tumble Dryer Repair Instructions

Thanks Penguin45  O0

Offline Mr. G

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Re: Bosch Dryer
« Reply #6 on: June 07, 2008, 09:59:04 PM »
I think it's the door switch.  How do I get to it?  The screws seem to all be removed but the control face and the front panel is only loose.  I don't want to pry on it and break something.  WTA 3500.

Thanks in advance.

Offline Penguin45

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Re: Bosch Dryer
« Reply #7 on: June 08, 2008, 08:24:55 AM »
Fascia is held by pins in spring clips along the bottom edge - pull and lift firmly and it should pop free. Then ease downwards to release the row of hooks along the top. Additionally, remove the door and the Torx screws from the front panel around the tub opening and things should start to fall off........

Door switch is the 3 way connector on terminals 5/6/7 on connector block X1 on the power board - you may be able to test it without demolition.

Penguin45.

Offline Mr. G

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Re: Bosch Dryer
« Reply #8 on: June 13, 2008, 01:45:52 PM »
Joy!

It works.  I did check that plug and it didn't change states with switch movement.  I took the whole thing apart and located the door switch.  I took the plug off the switch and rang the switch.  The switch then checked fine.  I put the plug back on and rang the other side of the wires and now the wiring checked fine.  I hooked up the connector to the board and the dryer worked!

There may have been a little corrosion on the switch.  I took pictures so I'll send them later.  Thanks for all the help!  Is pay pal the only method of making donations?

Thanks again

Online AJ

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Re: Bosch Dryer
« Reply #9 on: June 13, 2008, 05:53:51 PM »
Glad to hear you got it repaired.

Quote
I took pictures so I'll send them later.

Looking forward to seeing them photos. :)

Quote
Is pay pal the only method of making donations?

Donations are taken through paypal, but you should be able to make a donation using a debit card or a checking account without opening a paypal account yourself.


 

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