[R-390] Dead R390A

[Chuck Rippel]

Check and see if the ballast tube is getting warm, V505 on the IF deck and 
the PTO tube filaments are lighting up.  If not, the ballast tube is open and its 
time to replace it with solid state like I did Les' radio.

If not, take a scope an start by checking the outputs of the various oscillators. 
They should all beat at least 2V p-p.

>To all:
>My R-390A puts out nothing but static. The RF and Local do control the 
>volume of the static but no signal. Not even from the strong local AM 
>stations.
>Speaker and antenna are working fine. The unit was receiving just fine until I
>turned the volume up and noticed the static. The unit was usually kept on all
>the time. Any comments on where to start looking?

>Thanks for your time

>GT



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Chuck Rippel, WA4HHG
R390A List Co-Administrator
Reply to: R390A@R390A.com

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1968 Contract Dittmore-Friemuth R390A #38
1967 Contract EAC R390A #2808 with outboard Sherwood SE-3 Sync. Detector
1967 Contract EAC R390A #5295
1967 Contract EAC R390A #5591
1967 Contract EAC R390A #1023

All in regular use as premier Shortwave Broadcast DX Receivers
       -and-
Vintage AM Amateur use
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