[TenTec] Paragon Problem

[Dr. Gerald N. Johnson]

On 3/11/2010 2:04 AM, KA6UUP wrote:
> My 586 Paragon has developed a noise problem. It sounds like lightening
> crashes but lower in frequency.
> It starts after the rig has been on for a while (1/2 hour or so) and
> will go away for a while if the rig is switched off and about a minute later
> back on.
> It is not affected by disconnecting the antenna.
> It does not show on the s-meter but is controlled by the volume control.
> It is present on all bands, all modes and all filter widths.
> My plan is to get some cold spray and start looking for a noisy resister
> etc.

First tighten all the board mounting/grounding screws. Then get some 
Cramolin Deoxit (I prefer the dropper bottle) and apply a quarter drop 
to each cable connector pin and exercise the cable connections to clean 
them.

If that fails, then rather than a massive attack of heat and cold, 
remove one baord at a time and look for unsoldered or poorly soldered 
connections. The Paragon has had some history or poor soldering. Heat 
the bad ones.

THEN go with alternating heat and cold to find more bad soldering and 
components.
> Any help or advice would be greatly appreciated
> thanks,
> Chuck KA6UUP
> _______________________________________________
>
73, Jerry, K0CQ