[Elecraft] K2 kit building problem

[Gordon LaPoint]

Just got the new Q6 from Elecraft, installed it, and have power out!!!  
Now to finish the alignment and get the K2 on the air!
Looks like lots of fun ahead!
Thanks!!
Gordon - N1MGO

On 3/4/2018 4:20 PM, Don Wilhelm wrote:
> Gordon,
>
> That amount of RF is about (with 800mV on the Q5 collector).
>
> I am close to agreeing with you about a bad Q6, but do the checks I 
> mentioned anyway.
>
> If you do find out Q6 is the culprit -- if this is a kit less than 1 
> year old, contact support at elecraft and ask for a replacement.
> If more than 1 year old (or you were not the original purchaser), it 
> is not under warranty and you will have to pay for the part - contact 
> the sales office to do that (make sure you have the part number 
> handy). They will need payment information.  The phone number is 
> 831-763-4211.
> The minimum parts order is $5.  Get a replacement for Q10 at the same 
> time, just in case.
>
> 73,
> Don W3FPR
>
> On 3/4/2018 3:39 PM, Gordon LaPoint wrote:
>> Don,
>>        I have about 220mv P-P on the base of Q6.  I'm off to check 
>> all the components in the base ckt of Q6, with just DC on the 
>> collector. This is in Tune with the Power out set to 2W.
>>
>> Thanks,
>> Gordon - N1MGO
>>
>> On 3/4/2018 3:10 PM, Don Wilhelm wrote:
>>> Gordon,
>>>
>>> It is doubtful (but possible) that Q6 is bad.  Did it overheat when 
>>> you powered up? - if it did, you would most likely have seen a wisp 
>>> of smoke.
>>>
>>> How large is the signal at the base of Q6 when you have 800mV P-P on 
>>> the collector of Q5?
>>>
>>> The base voltage on Q6 is higher than normal, it should be around 
>>> 1.1 volts.  I would suggest you check all components in the base 
>>> circuit of Q6 first.
>>>
>>> 73,
>>> Don W3FPR
>>> age delivered to donwilh at embarqmail.com