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 STC 512
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 Return to top of page · Post #: 1 · Written at 2:44:37 PM on 7 January 2016.
Kelso's Gravatar
 Location: Gold Coast, QLD
 Member since 7 January 2016
 Member #: 1847
 Postcount: 1

Hello

I have recently been given a STC 512. from my dying grandmother

She speaks of the many good times that she has had with the radio.

I am looking to fix it and get it working. not completely sure if this is even possible.

Looking for any advice.

Thank you


 
 Return to top of page · Post #: 2 · Written at 3:12:47 PM on 7 January 2016.
GTC's avatar
 GTC
 Location: Sydney, NSW
 Member since 28 January 2011
 Member #: 823
 Postcount: 6686

Most repairs are possible given sufficient time, effort and expertise.

If we are talking about the same model, it's a timber cased set from circa 1940. The schematic is available.

Are you experienced in working with high voltage electronics yourself, or are you looking for a repairer?


 
 Return to top of page · Post #: 3 · Written at 3:31:32 PM on 7 January 2016.
Tallar Carl's avatar
 Location: Latham, ACT
 Member since 21 February 2015
 Member #: 1705
 Postcount: 2154

If it is complete then its very possible.


 
 Return to top of page · Post #: 4 · Written at 6:36:17 AM on 8 January 2016.
Wa2ise's avatar
 Location: Oradell, US
 Member since 2 April 2010
 Member #: 643
 Postcount: 830

If you are comfortable with electronics with hundreds of volts, replace all the wax paper caps, and the electrolytic caps too (don't parallel a bad electrolytic with an new one, the old one could short out). Then you can try powering the radio up. Tubes are not usually the source of faults in radios this old at this time (tubes last pretty much forever if they are not powered up, in a radio or in a box on the shelf). The mentioned caps do degrade over time even if not used, though. I usually just clip the old cap leads off terminals, and connect the new caps to the terminals. Or clip the old cap leads at the body of the cap, and carefully "J hook" the new caps' leads to the j hook (making sure that the new cap is positioned where the old cap was, and the leads don't get close to shorting to something else).


 
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