[TenTec] Omni 6 intermittent fault

[Bob McGraw K4TAX]

There are some reported incidents regarding electrolytic capacitor 
failures.   I have found these to be in the audio circuits where they 
are used as coupling capacitors between stages.  In as much as these are 
polarized capacitors, should the stage offset drift in the wrong 
direction by only a few millivolts, the capacitor can be reverse 
polarized in the circuit.  The result is a slow but noted deterioration 
of the capacity of the component.  The result is usually observed first 
by decreased low frequency response and finally a decrease in overall 
signal level.    Replacement of the capacitor is thus warranted.   In 
some instances I have elected to use non-polar electrolytics of the same 
voltage and capacity ratings.

With older radios such as the Omni VI and Omni VI Plus, it isn't a bad 
idea to replace electrolytics as they normally decrease value with age.  
On the other hand, if it is working..........don't bother to fix it.

73

Bob, K4TAX


On 6/29/2018 10:17 AM, Malcolm McLeman wrote:
> Mylast(s) and kind replies. Sorry for delay plus missing out the U-tube link here https://www.youtube.com/watch?v=6RnAC2PuuI8 and grateful on any comment re electrolytic failure in reply from WA4AOS and others..
> Another thing I've noticed which was not there before is the "chuffing" sound when I move the main dial..
> 73
>
> Malcolm F5VBU
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