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Offline mazari
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« Reply #750 on: July 07, 2017, 12:49:52 pm »
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hi again .A sharp and continuous sound I don't know what the problem?please help

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« Reply #751 on: July 07, 2017, 03:02:30 pm »
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 Did you check everything I circled ? 


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« Reply #752 on: July 07, 2017, 03:32:08 pm »
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yes i did .ihave found two diodes damaged .Then i replaced them and the sound appear.but now when i turn  the second pot(signal)at middle,
the sound disappear the  detection is vey very poor i detect  at a distance 2 cm only .

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« Reply #753 on: July 07, 2017, 05:21:12 pm »
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  Try the other Controls ? 

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« Reply #754 on: July 08, 2017, 02:30:39 am »
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thank you homefire.only the knob of signal adjust the sound

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« Reply #755 on: July 08, 2017, 05:24:54 am »
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Quote:Posted by homefire
  Thank You.  I bet I have like seven versions of these things.   Angry


LOL.

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http://storage7.static.itmages.ru/i/17/0708/h_1499513054_5649394_3fd3adf916.jpg


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« Reply #756 on: July 08, 2017, 08:07:36 am »
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please take a look at this video.

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MVI_0896.mkv


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« Reply #757 on: July 08, 2017, 08:24:31 am »
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   Some of your pot's look a bit Ruff looking.  Have you insured they function well ?

What test equipment to you have at hand?

All I can suggest is that you start at the front end on the thing and work your way through the whole thing until you find the problems. 

You seem to have worked thru the TX section and corrected a diode issue.  Keep going .  One stage at a time. 

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« Reply #758 on: July 08, 2017, 09:58:56 am »
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many thanks homefire .i'm checking to find the problem.


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« Reply #759 on: July 08, 2017, 10:04:17 am »
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Again, What test equipment to you have to work with ?

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