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Re: [Amps] Question: Where to buy?

To: amps@contesting.com
Subject: Re: [Amps] Question: Where to buy?
From: w4foa@comcast.net
Date: Tue, 8 Apr 2014 21:02:43 +0000 (UTC)
List-post: <amps@contesting.com">mailto:amps@contesting.com>
Well, once again, you all have been most helpful and I thank you for that ! 
Looks like Chinese 3-500s are in my future. 
A couple have asked about my problem with the LK-500ZB. After reading several 
comments, I suspect my problem is associated with heat. The fan on my ZB was 
quite noisy, I ran it on the low level but I did run an outboard fan, pulling 
the heat away from the tubes. There was a moderate level POP, but no smoke. 
Initial analysis is that both tubes are dead, the Zener is also dead. 
I wouldn't be surprised to find another component has fallen victim. 
Thank you again for your excellent responses. I will be back soon, seeking more 
advice. 
73 
Tony, W4FOA 
Any suggestions as to upgrading any components while the amp is on the 
operating table? 



Watch your thoughts; they become words. 
Watch your words; they become actions. 
Watch your actions; they become habits. 
Watch your habits; they become character. 
Watch your character; it becomes your destiny. 
Frank Outlaw 
----- Original Message -----
From: w4foa@comcast.net 
To: amps@contesting.com 
Sent: Tuesday, April 8, 2014 10:20:44 AM 
Subject: [Amps] Question: Where to buy? 

I can't tell you how impressed I am with the knowledge and willingness to help 
by members of the Amplifier Reflector. Having said that, I have had some 
serious problems with my beloved Amp Supply LZ-500ZB. I will need to replace 
the 3-500Z's finals and zener, etc.....as I repair this amp, I would like to DO 
IT RIGHT so that I can have another 15 or so years of trouble free operation. 
The question right now is are Eimac 3-500Z tubes available and if so, where may 
I find them. If not, is there a comparable brand and if so, what brand and 
where may I find them. 
Thank you for your time and advice. 
There will be more questions to follow, I'm sure. 
73 
Tony, W4FOA 
PS: Is there anyone on here that has had experience with the Amp Supply 
amplifiers? 



Watch your thoughts; they become words. 
Watch your words; they become actions. 
Watch your actions; they become habits. 
Watch your habits; they become character. 
Watch your character; it becomes your destiny. 
Frank Outlaw 
----- Original Message ----- 
From: "Joe Barnes" <n4jbk@comcast.net> 
To: "Amplifier Reflector" <amps@contesting.com> 
Sent: Monday, April 7, 2014 11:11:24 PM 
Subject: [Amps] Replacing light bulbs in a Command HF2500E 

Can anyone tell me how difficult it might be to replace the light bulbs in my 
Command HF2500E amplifier? The bulbs that are in there are not nearly bright 
enough for my taste, I have heard that the meters are held in place with some 
kind of rubber type glue or silicone. Also does anyone know of a direct 
replacement L.E.D. for these bulbs? I know that I am asking for a lot but in 
this crowd I have seen an awful lot more done with less. 

Thank you and 73, 

Joe N4JBK 

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