OK, this is beginning to sound challenging.
First off, I have a parts cadaver C21 that has all of the power supply intact
so we have a parts stream.
What if I were to send this to you and you could power your C21 from my power
supply just to see if there is a hidden design flaw or if there really is a bad
part in yours (I’d want it back of course).
It might be a good learning experience for both of us!
Gary
> On Jun 3, 2017, at 7:32 PM, Josh Gibbs <gibbsjj@gmail.com> wrote:
>
> My shielding attempts made no difference. I also unbolted the transformer
> so I could move it around slightly (as much as the leads would allow). That
> had no effect.
>
> I think my next step will be to remove the transformer + power board from
> the chassis and run it on the bench. That should stop the noise if its
> magnetic. Might replace the bridge rectifier while I have the power board
> out.... its a $2 part (VJ048 - NTE53000 equivalent).
>
> -Josh WA7FPV
>
> On Sat, Jun 3, 2017 at 2:53 PM, Gary F <dukeshifi@comcast.net> wrote:
>
>> If those are cracked, I guess I wold replace them.
>>
>> They likely will not fix the hum but should not be left if cracked.
>>
> _______________________________________________
> TenTec mailing list
> TenTec@contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec
_______________________________________________
TenTec mailing list
TenTec@contesting.com
http://lists.contesting.com/mailman/listinfo/tentec
|