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Tommy, Pay careful attention to what I am saying here. If you key the radio RTTY, AM, FM, CW and you are drawing 20 amps AND if you key the mike on SSB and you draw just a couple of amps you are

Andrew I am retired but sometimes household task take priority. I can discuss radio things most afternoons. I did measure the transformer output in CW mode at 28 MHz and saw 6+ watts and 20amps. I

Right ok Assuming you work you tell me, 23:00 is 18:00 your end, or we could do a weekend ? 73 Andrew ?Get BlueMail for Android ?

Oh !!! Well done how much current was it drawing when you were measuring 6 Watts, now you can put a watt meter try FM or CW see if you get 100 Watts. If the rig draws 20 Amp and you are only getting

Andrew, I am in Tallahassee FL. Eastern time zone. Tomorrow would be better for me. What is a good time for you? Tommy [email protected]> wrote:

Andrew I removed the PA board, separated the transformer and reinstalled the board so I could access the transformer output on the top side. See photo attached. Tommy [email protected]> wrote:

How much current? It might be better to set up a teams meeting, how far behind are you in time, I am GMT KR Andrew ?Get BlueMail for Android ?

Yes indeed, CW or AM would be my preferred option, also you need a PEP Watt meter. KR Andrew ?Get BlueMail for Android ?

Andrew Yes the power supply amps does peak with the modulation. I do have a generator. I have used it when setting tx gain and output power for vhf/uhf. Tommy [email protected]> wrote:

Hi as you removed the PA board how did you then power it up, did you have ribbon extensions? KR Andrew ?Get BlueMail for Android ?

In SSB mode current draw should be low until audio is being modulated. I would expect high current draw when using carrier modes

Hi Tommy, Is it still drawing 20 amp from the power supply? When you are speak into the mic,? do you have an audio dig generator? KR Andrew ?Get BlueMail for Android ?

Andrew, I have done some more measurements as you recommended. I removed the PA board and attached a connector to the output of L305 separated from the rx/tx relay and HPF. I have attached photos of

If you do remove the PA board to get to L305 to remove it, can you do a ringer test on the transformer to see if it has any shorted turns? With the level of power normally passing through L305 it is a

This is a very hard radio to work on, as you cannot easily get to the PA board the way it is mounted and soldered into the pa driver board I would remove the PA board, replace L305, for starters

This is a very hard radio to work on, as you can not easily get to the PA board the way it is soldered into the pa driver. I would remove the PA board, replace L305, for starters while it is out you

Tommy This is very interesting. It seems like you now have a list (short?) of a suspect components but I realize some might need to be removed from the circuit to fully test. Look forward to hearing

Hi Tommy . Have you tried to inject a signal after L305 ? The output circuit is passive and at least you can verify losses in that part of the circuit. Or maybe little loss which means power

Bob, Thanks for the encouragement I have considered all of the suggestions for troubleshooting the problem I have with the IC7000. I have tried to trace the HF RF path with an oscilloscope from