Here is an update:
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I received notice today from Icom America in Bellevue WA that my IC-7000 has been repaired and is on its way back to me.
Here is the diagnosis and the repairs:
Description of repairs required
Replace bad driver and final amp FETs.
Perform complete alignment.
Perform operational testing on all bands and modes.
I have asked Icom America's service department to provide possible reasons for such failure so that, if it is operator error, I make changes so that the failure doesn't
Thank you all for your input and I would appreciate any thoughts on possible causes of the problem
Keith W2KWO/KD2CWQ (just got my vanity call sign)
--- In ic7000@..., "Keith" wrote:
Hello and 73 to everyone. I just joined the group and hope someone might have some input with the problem I'm having, it seems similar to the topic "Re: Strange issues with output power"
This is the description of the problem I just sent to Icom:
I plan to send my IC-7000 (S/N 0506030)in for repairs but thought I would give
you some idea of the problem in the hope that you might be able to give me a
preliminary assessment of the problem and range of cost.
Other operating conditions:
LDG AT7000 autotuner (found to be working properly)
Buckmaster 300W 7-Band OCF dipole
SWR (according to the internal meter) <= 1 on all HF bands
OPEC 2M/440MHz dual band vertical antenna
RF level set to 100%
I noticed that the ALC, Po, and COM meters were not moving when I tried to
transmit on SSB.
As I tried to adjust the mic gain according to the instructions in the manual I
found that there was no reading on the ALC meter and that adjusting the main
knob had no effect on the meter reading.
RF level set to 100%
I was able to transmit on the 2M band but:
- The ALC reading went full scale into the red
- Attempts to adjust the ALC -- the ALC reading went full scale into the red when the PTT was activated and adjusting the main control know had no effect on the meter reading.
-The strength of my transmission signal grew weaker as the transmission progressed.
My Elmer, and former owner of the radio, transmitted a carrier and found the peak output to be 5W.
I understand that you will be able to give a better assessment once you can test the radio but any preliminary thoughts would be appreciated.
Keith Obrosky KD2CWQ