[TenTec] Ear Phone Audio

[Gary Follett]

This would be the case had he not reported that this once worked properly and then failed. Changing resistor values is probably not going to correct for a component failure.

There is, I believe, a headphone driver chip that can be damaged by plugging in a mono connector into the phone jack. I would look here.

I have a spare front panel board that has this circuit so, if needed, a replacement is available.

Gary

Sent from my iPad

> On Aug 24, 2016, at 4:30 AM, Barry N1EU <barry.n1eu at gmail.com> wrote:
> 
> There are some resistors in series with the headphone jack and you can try
> lowering their values.  I did that back when I owned a 565 and it helped.
> 
> 73, Barry N1EU
> 
>> On Tue, Aug 23, 2016 at 10:33 PM, Arthur Lewis <wa8vsj at gmail.com> wrote:
>> 
>> *I have a Orion 1 that I purchased in 2004. It has worked great and still
>> does, but I have noticed my receive audio is low and I have to turn the
>> volume up when I plug in my ear phones. The phones work well on my other
>> rigs. They are Sennheiser  HD280 pro. They have always worked well on the
>> Orion until last couple of days. In CW when I use the phones, I have to
>> turn the volume up, the CW sidetone gets extremely loud in the phones. The
>> phone audio is also low on SSB*
>> 
>> *The speaker audio is fine.  I like using the phones to separate the
>> receivers and it makes listening much easier.*
>> 
>> *Anyone ever have this problem.*
>> 
>> *Art WA8VSJ*
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