[R-390] 60 Hz Hum Output from R-390A IF Module

[Flowertime01 at wmconnect.com]

Jon,

We are running out of easy things real quick.
I missed the mail where you did isolate the filter cans and checked them 
all.

Time to pull the back shells off the IF and Audio deck connectors and 
inspect for crud and good bonds on all the shields on all the shielded wires.

You may want to go over the front panel and check the shielded wire bonds 
around all the switches also. 

I forget if you have an alternate receiver and have been able to isolate 
the problem to within a sub assembly or not.

Roger AI4NI


In a message dated 20-May-09 6:56:28 PM Eastern Daylight Time, 
ews265 at rochester.rr.com writes:
Jon,



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