[Elecraft] K2 is dead?

Mon Feb 19 21:39:18 EST 2018

Ken and all,

Thank you for that endorsement - I endeavor to return a radio working 
'the best it can be' no matter if it is an official Elecraft repair on 
an independent repair.

At the current time, I am doing support for Elecraft as well as both 
Elecraft repairs and independent repairs for the Classic (legacy) gear - 
the K2, K1, KX1 and XV series tranverters.  All that keeps me quite busy 
and my turn-around time on repairs has slowed since I have been also 
doing support activities via both email and phone directly for Elecraft.

Be that as it may, I still do many repairs of the K2, K1, KX1 and XV 
series tranverters, but my turn-around time has slowed a bit because of 
my other activities.

Send me a direct email (w3fpr at embarqmailcom) asking for my service and I 
will send you my service form.  If you prefer to go through the official 
Elecraft repair channel, send an email to support at elecraft.com and ask 
for an RSA number and form - wait until you have received the RSA number 
and shipping instructions before sending your K2.

RSA repairs of the K2, K1, KX1 and XV series transverters are not done 
in Watsonville, but at my address in North Carolina, or possibility by 
Gary in Arizona.

73,
Don W3FPR

On 2/19/2018 8:55 PM, Ken G Kopp wrote:
> I'll add my enthusiastic endorsement for Don, W3FPR.  He's prompt and
> reasonable.
> 
> 73!
> 
> Ken - K0PP
> 
> On Feb 19, 2018 18:50, "Bill Johnson" <k9yeq at live.com> wrote:
> 
>> Dave,  my suggestion:  send it Don who is a fantastic expert. He is very
>> reasonalble in his fees.  While I am technically competent, and have the
>> equipment, he is natural at it.  I have to work at it, because unlike Don,
>> don't do it day to day.  I have sent equipment to him and it is done in no
>> time.  If you have time to do your own work, then give that a shot.  For
>> me, life it too short.
>>
>>
>> 73,
>> Bill
>> K9YEQ
>>
>>
>>
>> -----Original Message-----
>> From: elecraft-bounces at mailman.qth.net [mailto:elecraft-bounces@
>> mailman.qth.net] On Behalf Of Don Wilhelm
>> Sent: Monday, February 19, 2018 6:28 PM
>> To: David Perrin <dbperrin at gmail.com>; Elecraft <elecraft at mailman.qth.net>
>> Subject: Re: [Elecraft] K2 is dead?
>>
>> David,[Bill] n
>>
>> There are several possibilities.
>> While it is possible that the "serial" cable may have been the the
>> problem, that could have damaged the KIO2 (or KPA100), but it could also
>> have damaged the MCU (U6) on the control board.
>>
>> Did it go into transmit with no load?  If so, it may be that Q7 and Q8
>> have been damaged.  Check the resistance from the collector to ground.
>> It should start out at about 2k ohms and increase in resistance as the
>> electrolytics charge.  If it is substantially less than that, the PA
>> transistors may have been damaged - that will trip the internal resettable
>> fuse (F1).
>> To remove 12v power from the PA transistors, you can remove them (do that
>> if the resistance check reveals them to be shorted), or you can remove
>> transformer T3.
>> After removing 12v from the PA transistors, see if the K2 powers on.
>>
>> I don't know of anyone who is skilled in troubleshooting the K2 in central
>> FL, but someone may volunteer.
>>
>> If you remove the PA transistors and do not have adequate desoldering
>> ability, clip the leads at the transistor bodies and remove the leads one
>> at a time.  Clean up with solder wick and if solder remains in the holes,
>> heat the pads and push the solder out with a wooden toothpick.
>> Replace the PA transistors with the K2PAKIT from Elecraft - it has matched
>> PA transistors.  I can give you some tests to check with the PA transistors
>> out to check whether transistors Q11 and Q13 are OK (they are included with
>> the K2PAKIT).
>>
>>
>> 73,
>> Don W3FPR
>>
>>
>> On 2/19/2018 10:20 AM, David Perrin wrote:
>>> Hi-
>>>
>>> Two questions?
>>>
>>> After 18 years my K2 doesn’t turn on. I did it. I must have incorrectly
>> wired the Serial cable. When it got plugged in - that did it.
>>>
>>> There is power thru the Power button. With the radio disassembled to the
>> main pc board, (sans everything that can plug into the main board) and
>> power applied thru the 1/8” coaxial power connector power doesn’t seem to
>> get beyond that.
>>>
>>> I am not in a place where I can get more parts out on the bench, nor the
>> equipment except for a cheap digital Voltmeter.
>>>
>>> Question 1: Is there someone in the central Florida area who knows this
>> radio and can shed some light on my problem?
>>>
>>> Question 2: Is there someone in central Florida who repairs the K2?
>>>
>>> Thanks for reading.
>>>
>>> 73 de Dave
>>>
>>> k1opq.4 at gmail.com
>>>
>>> ______________________________________________________________
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>>> This list hosted by: http://www.qsl.net Please help support this email
>>> list: http://www.qsl.net/donate.html Message delivered to
>>> donwilh at embarqmail.com
>>>
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> ______________________________________________________________
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