[Heathkit] DX-100B on Phone - bad audio distortion / oscillation

[Garey Barrell]

Rick -

No, it won't hurt anything to reverse them.  Again I don't recall much from the DX-100 schematic, 
but if is has any audio feedback circuitry reversing the phase of the transformer can cause the 
audio to oscillate, or not.

73, Garey - K4OAH
Glen Allen, VA

Drake 2-B, 2-C/2-NT, 4-A, 4-B, C-Line
and TR-4/C Service Supplement CDs
<www.k4oah.com>


Rick Poole wrote:
> At 05:24 PM 12/1/2011, Garey Barrell wrote:
>
>   >>>>>
>> Just a quick check.  I don't recall whether it's possible or not,
>> but can you swap the plate caps on the two 1625s?  If so, you may
>> have reversed them from original.  If impossible, disregard!  :-)
> <<<<<
>
> Good afternoon, Garey.
>
> I thought I was being careful not to do that, but it is certainly
> possible.  Physically it would be not only possible but easy.
>
> I could try swapping them and see what happens.  From the schematic
> it doesn't look like I'd be likely to blow something up by doing
> that, but can't be sure (I haven't done anything with AM or tube
> stuff in 45 years and am far from an expert).
>
> Am I taking a chance on blowing something up if I swap the plate caps?
>
> Rick WA1RKT
>
>
>