[Elecraft] Back to the SSB board

[Stewart Baker]

Ian,

What mods did you try, and then remove ?
Did the board work OK after you removed the mods ?
None of my mods involve work around the Xtal filter or diode areas, but they are 
round U3 and close to U2 and U4.
Is it possible that you may have put on a short ?

Stewart G3RXQ



On Sun, 21 Jan 2007 15:02:41 +0000, Ian J Maude wrote:
> I guess I should mention that this board has worked perfectly well
>
> before it went deaf.  I had tried some of Stewarts SSB mods and back
> engineered them before it failed.  I have checked and double checked all
> the parts of the circuit I messed with though and all seems fine in that
> area.
>
> Ian
>
> Don Wilhelm wrote:
>> Ian,
>>
>> Have you tried checking the small toroid RF Chokes for shorts to the crystal
>> can?  That is a common cause of the problem you describe.  Just stick a
>> small piece of paper between the chokes and the crystal cans for a quick
>> check - if the receiver comes to life, rewind the chokes (being careful not
>> to scrape the wire insulation).
>>
> Thanks for the info Don.  Unfortunately it is not the cause in this
> case.  I have checked the continuity of all the toroids and all seems
> well there.  I also had a response from Stewart G3RXQ and I have looked
> at what he mentioned.
> I don't think it is the VOXDET Stewart as I actually have *some* receive
> with the board plugged in, just well down on where it should be although
> I have looked very carefully for shorts but cannot find any currently.
> A S9 sig on the meter without the board does not move the meter with it
> plugged in and the receive is well down to match.  Any other ideas
> gratefully received.
>
> Skype ID is ian-g0vgs
>
> Ian