[R-390] Saturday's Line & Local Report

[Charles Steinmetz]

Craig wrote:

>All the negative leads of [C603] connect to pin one (1).  There is a 
>short wire directly from pin one (1) of the socket for C603 to the 
>AF chassis. Either from P120 or P119, the AF chassis is grounded to 
>the main chassis.

Well, it's supposed to be, but are you absolutely positive it really 
is, electrically (not just "looks like")?  C603B not doing its job is 
inconsistent with the Motorola AF deck not curing the problem when it 
is installed in the Amelco radio.  C603 may not be doing its job, but 
if your observation that swapping in the Motorola AF deck does not 
cure the problem is correct (i.e., repeatable), then it is not 
because the capacitor or the capacitor connections internal to the 
Amelco AF module are bad.  Which leaves bad grounding (most likely, 
of the AF module or the front panel) as the apparent culprit.

>Proceeding in an orderly, logical way is only one point of view.

OK, I'm done.  Proceeding in an orderly, logical way is how you avoid 
wasting a lot of your (and our) time and effort.

Best regards,

Charles