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914 TCU seems dead

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kevann(at)gotsky.com
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Posted: Wed Nov 19, 2008 5:49 pm Post subject: 914 TCU seems dead

Hi All,



I first ran my new 914 (Europa) last April and began flight testing. All 

was good for 10 hours, then I had to put her in the hanger and go away 

to work for 6 months. When I got back a couple weeks ago and started it 

up the wastegate servo did not cycle and the tach was dead. I have made 

sure that power is getting to the TCU, but it seems dead. I plan to hook 

up a computer to it to see if that tells me anything, but I don't really 

know what else to do.

Any help appreciated,



Kevin

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K Dilks

Joined: 22 Sep 2008
Posts: 108
Location: UK

Posted: Thu Nov 20, 2008 1:21 am Post subject: Re: 914 TCU seems dead

I would say double check your voltage at the tcu connector, if the battery is low could be the snag. check also its not possible any water got in the large connector block and it has corrosion on the metal parts.

 Other than that very rare these fail.

 let us know what you find.

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kevann(at)gotsky.com
Guest

Posted: Thu Nov 20, 2008 7:07 am Post subject: 914 TCU seems dead

I checked the voltage at the big connector on the TCU, 12.5v.I keep the 

battery plugged in to a maintainer No corrosion or water as its hangered 

in the desert.



Anything else I can check?



Kevin



K Dilks wrote:

 	  Quote: 	
		   



 I would say double check your voltage at the tcu connector, if the battery is low could be the snag. check also its not possible any water got in the large connector block and it has corrosion on the metal parts.

  Other than that very rare these fail.

  let us know what you find.



 --------

 Austria .............





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daveaustin2(at)primus.ca
Guest

Posted: Thu Nov 20, 2008 8:48 am Post subject: 914 TCU seems dead

Did you drain completely the fuel system, including the carb. float bowls, 

for that 6 month downtime?  Gummy fuel can leave stuff in strange places 

left that long.

Dave Austin  601HDS - 912

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K Dilks

Joined: 22 Sep 2008
Posts: 108
Location: UK

Posted: Tue Nov 25, 2008 5:15 am Post subject: Re: 914 TCU seems dead

Sorry to here about your TCU , though now you have done the test I would I think its time to get another to test on your loom . Does sound as if it has died.

  Not cheap either  



Kevin

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kevann(at)gotsky.com
Guest

Posted: Tue Nov 25, 2008 5:47 am Post subject: 914 TCU seems dead

I have pulled the TCU box out of the plane and will send it off to be 

tested. I'll post the results here.



Kevin

914 Europa



K Dilks wrote:

 	  Quote: 	
		   



 Sorry to here about your TCU , though now you have done the test I would I think its time to get another to test on your loom . Does sound as if it has died.

   Not cheap either  



 Kevin



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