[R-390] R-390 won't power up...

Flowertime01 at wmconnect.com Flowertime01 at wmconnect.com
Wed Jan 18 17:12:55 EST 2012


Terrence,

You should be able to use an ohm meter and check the 120 volt power circuit 
to the primary of the transformer and power supply.

As the receiver has been setting for some time you can expect some 
oxidation in the chassis connectors that may need looking into. Unplug and replug 
the connectors a time or two to clean off the pins and plugs in the connectors.

Do check the fuse and fuse holder silly little things break inside and 
bigger things then do not work.

Other than the micro switch on the function switch there is not much in the 
primary circuit. If it is good then at least one of the secondary circuits 
should be good and give you some filament lights.

Go off to R390.net and get the R390 schematics from the Y2K manual. You can 
down load parts of the Y2K manual. This is nice if like me you are doing 
very low speed dial up. 

Look into a broken wire on a pin in the wire harness under a connector 
hood. No reason to just shot gun the eye ball. Get the schematics and ohm meter 
out and systematically trouble shoot the problem to the point of failure.

Roger Ruszkowski AI4NI</HTML>


More information about the R-390 mailing list