hello to all K2/100 owners, advise needed

[John Klokis]

I recently got my K2 serviced and updated.  I was told by the technician that I needed to tighten the mounting screws on Q1 and Q2 after 10 to 12 hours of use. Failure to do so could destroy the transitors. I have read the KPA/100 manual and it says to tighten these mounting screws after initial use.  My radio is 6 years old.  Do I still have to try and remove the board to tighten these mounting screws periodically when using high power(100 watts).  If so needed, can I access these mounting screws easily or do I have to remove the KPA100 PCB?
    My K2/100 and KAT100 really performs well since it was updated and correction of a problem fixed.  I do not work on radios, but I would try and do this maintanence if needed to prolong the life of the transitors.  John K3JK
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[Vic K2VCO]

John Klokis wrote:
> I recently got my K2 serviced and updated.  I was told by the
> technician that I needed to tighten the mounting screws on Q1 and Q2
> after 10 to 12 hours of use. Failure to do so could destroy the
> transitors. I have read the KPA/100 manual and it says to tighten
> these mounting screws after initial use.  My radio is 6 years old.
> Do I still have to try and remove the board to tighten these mounting
> screws periodically when using high power(100 watts).  

No, it only has to be done once after initial assembly or whenever the
transistors have been removed.

> If so needed,
> can I access these mounting screws easily or do I have to remove the
> KPA100 PCB?

You need to take the shield off of the KPA100, but you do not need to
remove the board.
--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
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[Ken Wagner K3IU]

John:
If the thermal pads for the PA transistors were replaced then you DO
need to re-tighten the screws after 10 - 12 hours of use. Check with
the technician who serviced and updated your K2 to see if they were replaced.
73,
Ken K3IU
~~~~~~~~~~~~~~~~~~~~~~~~~~
At 05:19 PM 5/30/2008, John Klokis wrote:
>I recently got my K2 serviced and updated.  I was told by the
>technician that I needed to tighten the mounting screws on Q1 and Q2
>after 10 to 12 hours of use.
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