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Author Topic: MFJ-927 autotuner / system resets to fix problem  (Read 7326 times)
AC4RD
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Posts: 1236




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« on: April 24, 2013, 04:14:04 AM »

I said this in another forum, and it occurs to me to put it in the "repairs" forum in hopes it might be useful to someone doing a search:

I put my MFJ-927 autotuner in a spot I thought was protected from the weather, but I was wrong about that.  The tuner was fairly full of rainwater when it finally stopped working.

I took off the cover and dried it for a couple of days, then tried the "reset" process.  It failed, several times in a row.  I went through all the diagnostics and resets in the manual, and it wasn't working.  Ordinarily, I would have given up on it after a half-dozen tries, but I had nothing better to be doing, so I kept doing resets.  After maybe a dozen "system resets," the thing suddenly started working right.  :-)  It's been back up for a few months now and works perfectly well now. 

So, short version:  trying LOTS of "system reset" procedures isn't going to hurt, and it might just help.  FWIW.
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KA4POL
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Posts: 1924




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« Reply #1 on: April 24, 2013, 04:26:39 AM »

You certainly have done according to the manual. So this would indicate a contact problem in at least one of the buttons.
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W6LMP
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Posts: 1




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« Reply #2 on: May 13, 2013, 10:48:50 PM »

Thanks for your post, my MFJ-927 began endless searching on 17M today.  It's the band I use the most and it has been at the base of my 43' DX Engineering fast taper vertical since October 2009.  I don't suspect water here in San Diego County but I'll having a look in there and try the reset process. 
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KE3WD
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Posts: 5694




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« Reply #3 on: May 14, 2013, 02:34:10 PM »

Sounds like you perhaps did not know to put a Drip Loop on the wiring, allowing water to run towards the gland? 

Drip Loop. 


73
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