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IC-7000 Won't transmit
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Keith Obrosky
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 73! Keith W2KWO/KD2CWQ (just got my vanity call sign) --- In ic7000@..., "Keith" wrote:
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Keith Obrosky
Gordon,,
My Elmer checked the radio and didn't go into a lot of detail but I know he checked the power output. I assume he was using a dummy load but I'm not sure. I have sent the radio to Icom and will let you and the group know the results. Thanks for your suggestion. 73! -- Keith W Obrosky, KD2CWQ 962 Searles Hill Rd Bainbridge, NY 13733 USA |
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w3drm
Sounds exactly like the problem I had with my IC7000. All modes EXCEPT for SSB worked just fine. I sent it in to ICOM for repair. They found a the ALC ic to be bad. Cost me close to $200 for the fix including shipping charges.
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To be sure, check to see if it works on the VHF/UHF bands in FM mode. CW & RTTY modes should also show full power output if the problem is the same that I had. 73 - W3DRM - Don --- In ic7000@..., "Keith" wrote:
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Keith Obrosky
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 SSB 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. FM 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. CW 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. Sincerely, Keith Obrosky KD2CWQ 73! |
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