[Vintage-Audio] 7591 replacements

[Helmut Usbeck]

Amazin' but true, if you took one of those down to the Rat Shack today they 
would replace it.  Two things to watch out for.  One, make sure there's still 
at least some of the Rat Shack Logo on it, otherwise they will send you on 
your way.  Find someone in the store who knows what a tube is.  I returned a 
6BQ5 from a set I have and the kid behind the counter said they didn't have 
any.  Another sales type told him to call the warehouse and order me another. 
The kid then asked me what it was and I told him it was a vacuum tube.  He 
asked me what it was it used for and I told him that was the  devices used in 
electronics before semi-conductors came about.  He told me he knew all about 
electronics and never heard of one.  He called the warehouse and said there's 
a guy here who needs a tube for his vaccuum cleaner.  I burst out laughing!  
The kid didn't like that and kicked me out of the store because "I was making 
fun of him".   I left and got my tube another day, no problems.  Sales type 
was Oriental.  Losing face or some such non-sense.  

Helm.  WB2ADT
 
On Wednesday 05 June 2002 13:29, you wrote:
> I thought so. I had an ST-70, and each pair of 7591's I put in would get
> microphonic after a few months. My solution was to buy a set of Radio Shack
> LIFETIME 7591's, and get free replacements when they went microphonic. They
> never went microphonic! Had the amp about 5 more years, and the tubes were
> still just fine. I wonder how Radio Shack replaces these LIFETIME tubes
> today. Of course, I wish I still had the amp.--Mike--WV2ZOW
>