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@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@comcast.net
> de nf4r Dave
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