Check for a leaky filter capacitor. Check for loose transformer assembly
screws, which can also be the mounting screws. Check for a steel case
close to the core, maybe touching. Might take some stuff foam insulation
to slow the magnetic vibration of the case.
73, Jerry, K0CQ
On 2/17/2011 11:06 PM, Jim Anderson wrote:
I just picked up a 255 power supply for my Omni D and it has a pronounced
hum. This is not coming from the speaker, but from the supply itself. The
supply that came with the radio (non speaker type) does not do this. Does
anybody know what to check?
Thanks,
Jim K6JEA
_______________________________________________
TenTec mailing list
TenTec@contesting.com
http://lists.contesting.com/mailman/listinfo/tentec
|