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 Post subject: Beware of the Philco 47-1230...
PostPosted: May Sun 27, 2012 2:56 pm 
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Joined: Jul Fri 13, 2007 1:48 am
Posts: 2054
Location: Washington DC
After a gazillion hours troubleshooting this radio, it has now taken the number one spot as the most unfiriendly radio in history for servicing. The "front-end" is buried beneath a rube goldberg bandswitch, which means the only way to access the tubes underneath is to remove the bandswitch. Which, once you have removed the bandswitch [ a large task], the front end is disabled. This is one to stay away from. I am sure it is a great performer if you are lucky to "get" one that does not have a problem in this area, but so far I am batting 100% [ 2 out of 2], which tells me the chances of getting a good one are not good. Perhaps I should get training in laproscopic proceedues using fiber optics and micro-tweezers. This radio is equivalent to the dreaded bandswitch area on a SX-42, if not worse. Just a warning, though I am sure many 47-1230 units have failed with "easy" problems like IF transformers, etc. that would make them simple to troubleshoot. Actually, I am puzzled as to how they did the original assembly and checkout - must have been a bear.

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John O.

"Apolitical and staying that way"


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 Post subject: Re: Beware of the Philco 47-1230...
PostPosted: May Mon 28, 2012 10:48 pm 
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Joined: Mar Sat 06, 2010 11:34 pm
Posts: 185
Location: Las Vegas, NV
So what is it doing? A weak 7F8 can make the radio intermittent...went through that on a 48-482 a while back.

You can get the full blown Philco Service Bulletin for free here (you will need to download a DjVu file viewer

http://www.audiophool.cjb.net/Philco.html


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