[TenTec] Orion audio input issue

[Byron Cordes]

If alc is ok I would check out the mic amp chip and the clean the connectors . I have had a Orion with Plug problems in audio and one that had bad resistors in audio and a cap. 
  It is hell following the schematic. Do your self a favor and print it off.  
I would clean the pins first. And if that don’t work trouble shooting time.
73s Byron AC9PA 


Sent from my iPad

On Oct 24, 2020, at 9:40 AM, Byron Cordes <byroncordes at icloud.com> wrote:

Hello 
I had a Orion that had funny power It might work then it would drop power down to 10-20watts  . Dirty or bad alc pot. I cleaned the alc pot and worked fine for two months then total drop off of power . Replaced pot back to working. 
     Adjusting power on the Orion isn’t the easiest thing to get right. Don’t remember the the order of adjusting but mine didn’t like running 100 watts at that setting it would go to 130-140  watts on some bands . But set it at 90 watts and it’s rock solid on all bands.
Why???  
73s Byron AC9PA 

Sent from my iPad

On Oct 24, 2020, at 5:49 AM, Enzo via TenTec <tentec at contesting.com> wrote:


My Orion does not handle the audio input correctly on several bands. By setting the full power, on 160 and 80m it is OK, but on the others the ALC led does not light and the output power is about on 20% (30% on 40m). The issue is present both on MIC and AUX. Increasing the Speech Processor or the mic gain does not help. On CW mode all bands are fine with full power output.Last year, the radio did not work at all, but by following Bill (N4LG) and Gary (W0DVN) suggestions, I changed all the caps of the A9  board and the radio was reborn. But I did not check the audio input, as I use it mostly on CW and low bands. Now, I would make some QSO on the CQ WW DX SSB contest and I have got the "surprise".Any help will be really appreciated.Best 73 de Enzo, IK3SWB
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