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 Airzone Midget 553 chassis 504 (1936)
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 Return to top of page · Post #: 1 · Written at 11:23:35 PM on 31 July 2014.
Marcc's avatar
 Location: Wangaratta, VIC
 Member since 21 February 2009
 Member #: 438
 Postcount: 5239

Would anyone perchance have a circuit for above?

Marc


 
 Return to top of page · Post #: 2 · Written at 8:12:06 AM on 1 August 2014.
MonochromeTV's avatar
 Location: Melbourne, VIC
 Member since 20 September 2011
 Member #: 1009
 Postcount: 1179

Here is a copy of the circuit from the 1938 Mingays Radio Trade Annual.

Airzone 553 Circuit Diagram


 
 Return to top of page · Post #: 3 · Written at 8:15:43 AM on 1 August 2014.
Scraps's Gravatar
 Location: Blue Mountains, NSW
 Member since 10 March 2013
 Member #: 1312
 Postcount: 401

Email sent


 
 Return to top of page · Post #: 4 · Written at 9:33:54 AM on 1 August 2014.
Marcc's avatar
 Location: Wangaratta, VIC
 Member since 21 February 2009
 Member #: 438
 Postcount: 5239

Thanks guys: I can now trace where the stray wires belong (owner attempted repair & got lost). The pain is I see a broken coil wire. So after the food forage & trip through the medical system, I will attempt a coil repair (has to come out). Green is ominous.

Marc


 
 Return to top of page · Post #: 5 · Written at 5:43:52 PM on 3 August 2014.
Garyoz's avatar
 Location: Perth, WA
 Member since 19 November 2008
 Member #: 381
 Postcount: 240

The circuit is exactly the same as my Airzone 545. Only diffence is the 6C6 is a 77 and the 6D6 is a 78. Apparently there is common fault on this type of 6F7 oscillator on the Airzones. The secondary of the local osc coil goes open circuit. I and am trying to rewind it and get it back on frequency. If you are looking for C1 & C2 they are inside the osc coil former.

Airzone 503 Oscillator Coil


Cheers,
Gary


 
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