[NJARC] Advice Needed:

[Al Klase]

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/