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 STC T212DA circuit diagram/service manual needed
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 Return to top of page · Post #: 1 · Written at 11:41:51 AM on 31 December 2019.
John116's Gravatar
 Location: Ryde, NSW
 Member since 29 October 2008
 Member #: 370
 Postcount: 92

Hi - looking for a service manual or even a circuit diagram for this set, so I can the restoration of it. Happy to pay for it.

John


 
 Return to top of page · Post #: 2 · Written at 9:24:36 PM on 31 December 2019.
MonochromeTV's avatar
 Location: Melbourne, VIC
 Member since 20 September 2011
 Member #: 1009
 Postcount: 1133

There is a schematic at Radiomuseum. https://www.radiomuseum.org/r/stcaus_t212da_t212.html

However a TV like yours warrants the 39 page service manual. I'll scan the document and send a pdf copy here gratis. Might take a few days though.


 
 Return to top of page · Post #: 3 · Written at 11:02:19 AM on 1 January 2020.
John116's Gravatar
 Location: Ryde, NSW
 Member since 29 October 2008
 Member #: 370
 Postcount: 92

Wow - thank you MonochromeTV. Much appreciated.


 
 Return to top of page · Post #: 4 · Written at 3:14:24 PM on 6 January 2020.
John116's Gravatar
 Location: Ryde, NSW
 Member since 29 October 2008
 Member #: 370
 Postcount: 92

How are you going with this?


 
 Return to top of page · Post #: 5 · Written at 6:41:14 PM on 7 January 2020.
MonochromeTV's avatar
 Location: Melbourne, VIC
 Member since 20 September 2011
 Member #: 1009
 Postcount: 1133

Sorry John,

I am nibbling away at it , but most my time at the moment is taken up by work. I have a few days off later in the week and you should have it by the weekend.


 
 Return to top of page · Post #: 6 · Written at 5:42:49 AM on 8 January 2020.
John116's Gravatar
 Location: Ryde, NSW
 Member since 29 October 2008
 Member #: 370
 Postcount: 92

All OK, many thanks again.


 
 Return to top of page · Post #: 7 · Written at 2:55:02 PM on 15 January 2020.
MonochromeTV's avatar
 Location: Melbourne, VIC
 Member since 20 September 2011
 Member #: 1009
 Postcount: 1133

 
 Return to top of page · Post #: 8 · Written at 3:19:19 PM on 15 January 2020.
John116's Gravatar
 Location: Ryde, NSW
 Member since 29 October 2008
 Member #: 370
 Postcount: 92

Where did you send it to?


 
 Return to top of page · Post #: 9 · Written at 8:21:35 PM on 15 January 2020.
Brad's avatar
 Administrator
 Location: Greenwich, NSW
 Member since 15 November 2005
 Member #: 1
 Postcount: 6351

See the links in Post 7, John. Smile


‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾
A valve a day keeps the transistor away...

 
 Return to top of page · Post #: 10 · Written at 8:25:42 AM on 16 January 2020.
John116's Gravatar
 Location: Ryde, NSW
 Member since 29 October 2008
 Member #: 370
 Postcount: 92

Awesome!!! Thanks so much!!! This will be invaluable!


 
 Return to top of page · Post #: 11 · Written at 11:34:28 AM on 19 January 2020.
John116's Gravatar
 Location: Ryde, NSW
 Member since 29 October 2008
 Member #: 370
 Postcount: 92

Success! With the help of the manual, the television now works. It needs some height/linearity adjustment, but otherwise looking good.

It's actually a BGE branded TV, but made by STC.

STC T212DA Valve Television
STC T212DA Valve Television
STC T212DA Valve Television
STC T212DA Valve Television
STC T212DA Valve Television


 
 Return to top of page · Post #: 12 · Written at 10:51:48 PM on 19 January 2020.
Ian Robertson's Gravatar
 Location: Belrose, NSW
 Member since 31 December 2015
 Member #: 1844
 Postcount: 1909

They were a VERY good TV in their day. Many stayed in service until colour arrived in 1974.

The following 110 degree chassis was very much a cost reduction exercise and a very disappointing performer by comparison. I recall having to re-install one of these chassis after a workshop overhaul. The client had been left a loan set, a battered Pope Motorola metal case 14" portable. On re-installation, the STC picture faded and fluttered badly whenever a large vehicle on the road above passed through the signal path. Reason? Only two stages of vision IF and simple AGC with a long time constant. The older loan set outperformed the STC in an embarrassing way.

How to explain to the client that there was nothing we could do about it? I think I ended up booking it in for an antenna call.

Consider yourself lucky you don't have one of these!

Although, running from a modulator, you'd only have to put up with the floating, AC coupled black level.


 
 Return to top of page · Post #: 13 · Written at 3:55:56 PM on 20 January 2020.
Brad's avatar
 Administrator
 Location: Greenwich, NSW
 Member since 15 November 2005
 Member #: 1
 Postcount: 6351

Photos uploaded to Post 11.


‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾
A valve a day keeps the transistor away...

 
 Return to top of page · Post #: 14 · Written at 10:36:04 AM on 29 January 2020.
Irext's avatar
 Location: Werribee South, VIC
 Member since 30 September 2016
 Member #: 1981
 Postcount: 400

Very nice and a CRT with good emission to boot. What was the paper cap replacement count?


 
 Return to top of page · Post #: 15 · Written at 7:03:11 PM on 31 January 2020.
John116's Gravatar
 Location: Ryde, NSW
 Member since 29 October 2008
 Member #: 370
 Postcount: 92

38 paper, and a number of electrolytics.


 
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