[TenTec] love my Omni V

[John Molenda]

  Thanks Jerry for such a detailed response The darn thing has been 
working good the last two days go figure .  John

On 9/16/2010 10:33 PM, Dr. Gerald N. Johnson wrote:
> I downloaded the manual and studied the display circuit. Its a
> multiplexed display where the driver puts out the bits for each number
> in sequence and a digit select line enables the appropriate chip. To get
> an extra digit means the digit select sequence has to have an extra bit
> part of the time, its a glitch so flickering and low intensity might be
> part of the problem. The link from the control board to the display
> driver board is a serial data link. I think I'd attack board grounding,
> connections, and electrolytic capacitors, replacing all the capacitors
> on the control, display driver, and display boards with high temperature
> very low ESR caps. I might try some heating and cooling to see if I
> could find a spot that cycling would make the extra digit come and go.
> Careful inspection of the soldering might turn up some intermittents
> too, but alternating hot and cold should make those show up.
>
> 73, Jerry, K0CQ
>
> On 9/15/2010 8:46 AM, John Molenda wrote:
>>     That extra number  flickers and looks to be only half as bright as the
>> others .  Now I just turned the radio on for a 45 min and the display is
>> fine .  John
>>
>>
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