[R-390] R-390 Rectifier Stack Replacement

Roy Morgan roy.morgan at nist.gov
Mon Jun 18 09:18:52 EDT 2007


At 04:52 PM 6/17/2007, Cecil Acuff wrote:
>The bigger problem are the 4ea. 47 ohm resistors...two under the 
>regulators and two under the audio deck if I remember correctly.

There are four under the audio module at the 6082 sockets, one for each of 
the triode series regulators.  I've used square shaped "sand" resistors of 
7 watt rating, and I like to use Teflon tubing where I can to avoid any shorts.

DO PUT A FAN ON THE SIDE OF THE RADIO TO KEEP IT ALL COOL!

>  Change all of them out with 5 watt wire wounds.  May have been more than 
> 4 total...I'd have to go back and look at my pictures...

Four under the 6082's and more in the power supply module.  Buy a bunch.. 
they are cheap.

Roy


- Roy Morgan, K1LKY since 1959 - Keep 'em Glowing
13033 Downey Mill Road, Lovettsville, VA 20180
Phone 540-822-5911   Cell 301-928-7794
Work: Voice: 301-975-3254,  Fax: 301-975-6097
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