[TenTec] Argosy 2 525d

[Bob McGraw K4TAX]

DeOxit Gold is good cleaner.  I don't have any marvelous or magic potion 
to suggest.   I do find that many of the Caig Laboratories products are 
considered to be good to excellent when applied correctly.

As with all of my recommendations, do not spray anything into the radio 
or other equipment.   Apply the cleaner via some non-spraying means to 
the specific item to be cleaned and lubricated.  Some of the ingredients 
in cleaners will or can damage certain parts, i.e. plastic etc.     Used 
correctly and sparingly, there will be no harm done.

I've had radios sent to me for repair {when I was repairing radios} that 
were literally dripping with sticky, gooey, greasy contact cleaner.   
Nothing short of an entire bath in solvents would get the stuff off.   
Yes, you can give a radio a bath.  And I hate to get my hands dirty when 
working on radios as I view it isn't necessary.    Electronic equipment 
should be clean, very clean, inside and out.

73

Bob, K4TAX


On 9/4/2018 9:51 AM, ROLAND HOWELL via TenTec wrote:
> Hi BobThat may well have been the fault, as you say intermittent faults are a pain to find and rectify.I have 'Detoxit gold', purchased to clean the pots on my valve amp, still to do! so that will do.Not cheap here in the UK!.Thanks for the advice73Snowy G0HZE
>
>      On Tuesday, 4 September 2018, 13:54, Bob McGraw K4TAX <rmcgraw at blomand.net> wrote:
>   
>
>   Steve:
>
> Have you cleaned connectors for cables and edge connectors? This is
> often found to be an issue with many 20+ year old radios, of which the
> Argosy is one.  I use a Q-Tip with contact cleaner applied.  Unplug
> each, scrub the male pins and then exercise the connector on and off a
> couple of times to effect wiping of the female contacts.  Usually this
> resolves many non-explainable issues.
>
> In many of the Tentec radios the screws which secure the printed circuit
> board to the chassis is the ground path.   This is another are to which
> can cause issues.  Make sure the contact under the board is clean,
> proper lock washers are in place and the screws tight.
>
> These general maintenance procedures are suggested as a first approach
> unless one has confirmed a hard failure, such as burnt components or
> failed components.   I've spend many hours chasing an issue only to find
> to mysteriously goes away.   Very frustrating and leaves one in question
> if and when it may return.
>
> 73
>
> Bob, K4TAX
>
>
> On 9/4/2018 7:46 AM, ROLAND HOWELL via TenTec wrote:
>>    Hi allWell truly puzzled I am, have gone thru' the IF/AF board but apart from a couple of resistors that had their legs cut and soldered again I could not fault it, everything appeared to correct.Then I noticed that pcb numbering was different to what is in the manual, just the same as the low pass filter which was a 91696, this pcb also was a 9**** series, got me thinking that perhaps I am chasing a non existent fault.Refitted board to radio and attached my inverted 'L' and the signals romped in on 7mHz with the 'S' meter doing a dance across the scale, the other bands were the same.So it would seem that the fault has gone or I have unknowingly cleared it, now if I can just get the power control to work and the pa to give continuous RF output all will be well, just so long as that finals board is in the manual and not a later model 525d for which there will be no diagram, parts placing and listing.Thanks to those that offered help and advice especially Steve Hunt73Snowy G0HZE
>> _______________________________________________
>> TenTec mailing list
>> TenTec at contesting.com
>> http://lists.contesting.com/mailman/listinfo/tentec
>
>
> _______________________________________________
> TenTec mailing list
> TenTec at contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec
>
>
>     
> _______________________________________________
> TenTec mailing list
> TenTec at contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec