[NJARC] Advice Needed:

[Mike Feher]

Al -

Agreed, I probably have suffered from the same syndrome. I guess better
sitting at home than being out, at least from my perspective. It is not
unique to this reflector. It seems often than the simplest questions get a
barrage of replies all essentially saying the same thing. Usually, I like to
read all of the responses before I respond, so as not to make me look too
stupid. It just happened, since I did not watch the big ball fall I was
awake real early (since 2 AM) and was the first to answer Joe's question. I
am not claiming my reply was 100% on the nose, but, I figured a guy with a
ham ticket and who was able to bring back the radio to life, could certainly
read between the lines. As an example - you mentioned bias on the output
tubes, well, I just said total current. If the bias was off on those babies
they would really glow and, I do not think the audio would be as good as Joe
mentioned. OK, time for my nap, wish you all the best of happiness and
health and lots of new radios in 2008. - Mike

 
 
Mike B. Feher, N4FS
89 Arnold Blvd.
Howell, NJ, 07731
732-886-5960
 
 

-----Original Message-----
From: njarc-bounces at mailman.qth.net [mailto:njarc-bounces at mailman.qth.net]
On Behalf Of Al Klase
Sent: Tuesday, January 01, 2008 1:27 PM
To: New Jersey Antique Radio Club
Subject: Re: [NJARC] Advice Needed:

Visit our web site - See http://www.njarc.org
_______________________________________________
Hi Mike,

Well, actually, I just responded to the original post, and was a little 
embarrassed to fine 17 others that pretty we'll covered the situation. I 
think everyone is just sitting around on New Years Day with nothing 
better to do.

Best regards,
Al



Mike Feher wrote:
> Visit our web site - See http://www.njarc.org
> _______________________________________________
> So, with all of this good advice, what has anyone added to my original
post
> that really meant anything? It is amazing how a simple question can turn
> into a thread with no further substance. Is this becoming an I can out do
> your answer with mine better? I have yet to see one that added anything
more
> of significance to my original reply to Joe's post. As I said, early on,
> leave the damn transformer alone. Is it that the rest knows a lot more
than
> I? If so, and I do not doubt that a lot do, demonstrate it in your posts.
-
> Mike
>
>  
> Mike B. Feher, N4FS
> 89 Arnold Blvd.
> Howell, NJ, 07731
> 732-886-5960
>  
>  
>
> -----Original Message-----
> From: njarc-bounces at mailman.qth.net [mailto:njarc-bounces at mailman.qth.net]
> On Behalf Of Al Klase
> Sent: Tuesday, January 01, 2008 12:09 PM
> To: New Jersey Antique Radio Club
> Subject: Re: [NJARC] Advice Needed:
>
> Visit our web site - See http://www.njarc.org
> _______________________________________________
> Hi Joe,
>
> The transformers in a lot of these old sets run warm/hot.  The solution 
> to that, in the original design, was more iron and more copper, but they 
> cost money.  The question is how hot does it run?  Can you keep your 
> hand on it for a while?  If you can that's less than about 125 F, and 
> should be OK.  The "tar shower" was probably the result of overload at 
> some point as components were failing.  If the thing still get hot 
> enough to melt tar, I would play the set for any length of time, and 
> start looking for a replacement. 
>
> You also might want to check that the 41's have correct grid bias, and 
> aren't drawing excessive current.  The output tubes are the primary 
> power consumers in most radios.  The bias is easy to measure, as the 
> cathodes are grounded in this set.  41 is equivalent to a 6K6.  The tube 
> manual shows the bias should be -25.5 for  285 volts on the plates 
> (push-pull class A1).
>
> Al
>
> JOE CRO wrote:
>   
>> ......Has anyone else in our group come across a situation like this? If
>>     
> so, what did you use to repot the transformer? I was thinking of silicone
> RTV, but due to it's curing properties I don't know if it would be a
> suitable medium to use. Should I just leave it alone and hope for the
best?
> Again, any advice will be greatly appreciated.
>   
>> Many thanks in advance for any advice, and a very Happy new year to all.
>>     
> May 2008 bring you more radio that glow in the dark!
>   
>>   
>>     
>
>   

-- 
Al Klase - N3FRQ
Flemington, NJ
http://www.skywaves.ar88.net/

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