[TenTec] 252mo supply

[Chris Howard w0ep]

My bridge rectifier seemed to be ok.

But the big pass transistor was reading dead short
between collector and base.

I replaced that with another 2n3055 that I had on hand.
That seems to have done the trick.


Chris


On 2/9/2015 1:24 PM, Chris Howard w0ep wrote:
> 
> Thank you Ralph!
> 
> I hooked the Omni up to a Pyramid linear supply
> that I have here.  I can run up to about 10 watts
> and then the voltage sags enough to cause the frequency
> to change.  So, I am ok if I stick to lower power.
> 
> I'm going to dive into the 252mo supply and see
> what is what.
> 
> Do you think it would be better to get a switching-type
> supply?  Should I be worried about noise on the power
> line?
> 
> Chris
> 
> 
> On 2/8/2015 9:22 PM, Ralph Arnold wrote:
>> I had the same problem with my OMNI D  the PS is bad mine blew the Bridge
>> Rectifer and the 3055 Voltage Regulators were leaky  I also replaced the
>> electrolytic cap it was old  Now it works like a champ  Oh BTW check output
>> with a known good DVM and I also Scoped PS for clean power.(no 60 cy
>> ripple. Im an old USN Aviation Tech  KD8BTQ ---Ralph
>>
>> On Sun, Feb 8, 2015 at 11:41 PM, Chris Howard w0ep <w0ep at w0ep.us> wrote:
>>
>>>
>>> I was tuning up the antenna with my Omni-D yesterday
>>> afternoon and everything went completely dead.
>>> I was not high on SWR and not turned up to maximum power.
>>>
>>> Turning things off and on I was able to get the power
>>> supply meter light to come on, but nothing on the rig.
>>>
>>> I have the light in my SWR meter hooked up to the supply
>>> also, and that is not working.  I think the supply has
>>> problems.
>>>
>>> -- later --
>>>
>>> I jumper the "SW" ports of the connector, plugged in
>>> in the supply and fired it up.  Sure enough, the supply
>>> lights up but no output.
>>>
>>> Any advice before I dive in?
>>>
>>> Chris
>>> w0ep
>>>
>>>
>>>
>>> _______________________________________________
>>> 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
> 
>