If you love the radio...buy both and be done with it!
Cecil
K5DL
Sent from my iPad
On Aug 22, 2013, at 3:05 AM, "Rick - DJ0IP / NJ0IP" <Rick@DJ0IP.de> wrote:
> If you buy a Crystal, then I'll bet you $5 it's the cpu! (hi)
>
>
>
> -----Original Message-----
> From: TenTec [mailto:tentec-bounces@contesting.com] On Behalf Of Mike Bryce
> Sent: Thursday, August 22, 2013 2:47 AM
> To: Discussion of Ten-Tec Equipment
> Cc: Discussion of Ten-Tec Equipment
> Subject: Re: [TenTec] Paragon logic board
>
> Bob and the group,
>
> The project continues, no joy insight, the microprocessor oscillator is not
> running.
>
> So, is it the Crystal or the microprocessor?
>
> The Crystal is not hard to come by. EBay has them 10 for $15.
>
> Right now, it's a crapshoot 50-50 chance it could be the microprocessor or
> it could be the crystal.
>
> I wonder, if I were to take a 4 MHz crystal And solder it in the place and
> see if it would oscillate. I realize it would not work correctly but that
> would show if the oscillator inside the microprocessor is operating.
>
> Ten tec has no parts in stock. I called.
>
> Mike wb8vge
>
> Sent from my iPad
>
> On Aug 20, 2013, at 10:31 PM, "Bob McGraw - K4TAX" <RMcGraw@Blomand.net>
> wrote:
>
>> Yea, the board is a pain to pull. My schematics are at the shop, and I'm
> not so I can't say exactly which designator is the timing cap. It is on the
> RESET line of the MP to ground and has a value of R to the 5 volt line as I
> recall. This is not the same as the external reset line to the switch on
> the side of the radio.
>>
>> As power is applied, be it from activation of the switch on the front
> panel or from the power supply, there is a reset pulse generated by the
> timing cap and resistor that resets the microprocessor, but only after the
> operating parameters are loaded. In other words, the MP starts with a clean
> load of data.
>>
>> Worth a try.
>>
>> 73
>> Bob, K4TAX
>>
>>
>>
>>
>> -----
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