[R-390] Power Transformers

[Bob Camp]

Hi

I obviously am going brain dead. When I read this message I noticed 
something odd about it but could not exactly identify what it was. It's 
taken me a couple of days of thought to figure out what it was.

How in the world does

	"picking up 7 R-390A's"

fit in with

	 "a need to slim down the stock of radios"

mentioned in your earlier posts?

This sounds like a recurring sickness.  The only solution is of course 
total abstinence. You must immediately dispose of all of the R-390's. I 
will forward my shipping address directly ....

	Take Care!

		Bob Camp
		KB8TQ


On Jul 25, 2004, at 11:04 PM, Llgpt at aol.com wrote:

> I have had 33 pass through my hands, none were bad. Picked up 7 
> R-390A's today, haven't checked any of them out yet, but expect all of 
> them to be fine. Also, 1 R-390 and expect that to be ok too.
>  
> Les
>  
>  
> In a message dated 7/25/2004 9:45:29 PM Central Daylight Time, 
> ham at cq.nu writes:
> Hi   
>
> One of the things that there "are no more of" is the power transformer
>  in our favorite radio. Given the way they made these we are unlikely 
> to
> get together and make up a batch of them. Obviously this is not the
>  only part in the radio that might be in this category ten or twenty
>  years from now. Let's just focus on the power transformer right now.
>
> I have never seen a R-390 with a blown power transformer. How common is
> power transformer failure in these radios? Certainly it is not in the
>  top ten or even the top 20 observed failures. That alone is an
>  encouraging thing. It is especially encouraging when I compare it to
> the number of computer power supplies I seem to see.
>
> There are things we can do to lengthen the life of the transformers we
>  have *if* it's an issue. All of these things have an impact so you
>  really don't want to fix one thing only to break another.
>
> So, has anybody ever seen a blown power transformer in one of these
>  radios? If so do you have any idea what caused it to fail?
>
>     Thanks!
>
>         Bob Camp
>         KB8TQ