[TenTec] Need help with corsair ii

[nf4r at comcast.net]

Thanks for the reply. No scope. Mine has abt. 8.4v at pin four since it is a later sn.Also tried battery. 

73 de nf4r 



----- Original Message -----


From: "Barry N1EU" <barry.n1eu at gmail.com> 
To: "Discussion of Ten-Tec Equipment" <tentec at contesting.com> 
Sent: Sunday, March 24, 2013 4:42:33 PM 
Subject: Re: [TenTec] Need help with corsair ii 

Have you tried putting a fresh 9V battery in the 705 mic? 

I assume you don't have an oscilloscope. 

73, 
Barry N1EU 

On Sun, Mar 24, 2013 at 8:01 PM, <nf4r at comcast.net> wrote: 

> 
> I am told that my corsair ll has low audio while on the air. Was using my 
> 705 
> mic.,have also tried my heil mics,with same reports. Both of these mics 
> work 
> fine on my paragon. Corsair was purchased from a friend that had not used 
> it for 
> 3 or 4 years. sn. is 580 02129. I am no tech but have used schematics to 
> troubleshoot and did some homebrewing. Problem is I only have a foggy idea 
> of 
> what I am doing. Traced mic input to audio processor board and found 
> u2a,on pin 
> 3 has 3.7v instead of .9 and pin 5 of u2b also has 3.7v instead of .9 and 
> pin 6 
> has 4.1v instead of 1.0. On u1 pin 5 has 2v instead of 0. This is where I 
> get 
> lost and foggy. I have replaced the vfo with the n4yg board but can't see 
> where 
> it should cause my problem. I know the small electrolytic 
> caps go bad but not how to check them. This my first post so am sure I 
> did not give all information needed. 
> Thanks for any help or insight. You can reply to nf4r at comcast.net 
> de nf4r Dave 
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> TenTec at contesting.com 
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