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  General Electric Portable TV. Model T12P1
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 Return to top of page · Post #: 1 · Written at 2:08:20 PM on 18 September 2019.
Labrat's avatar
 Location: Penrith, NSW
 Member since 7 April 2012
 Member #: 1128
 Postcount: 269

Hello again friends, I recently decided to overhaul my little 12” General Electric television. An unusual set for its time, it uses Compactron valves, as well as conventional valves.

Before I get into the details of the repair, I shall tell you more of what makes it so different from its contemporaries

The set contains five Compactron valves, five conventional valves, and just three semi-conductor diodes.
The valves heaters are series-wired, except for the E.H.T. Rectifier valve.
The heaters are switched from 120 volts when the set is operating, to 50 volts when switched to standby, giving an instant-on feature.
Power consumption for this set is 150 Watts, compared to just 33 Watts for the National TR-602AA 12” portable, that lives beside it.

Most remarkable is that this particular set was built in November 1967, and examples of this model continued to be built past May 1971.
The last hurrah of the fully valve set.

Some more details.
1. Manufactured by General Electric Kirby Appliances Limited, Padstow N.S.W.
2. Has just six pots. Volume, Brightness, Contrast, Vertical Height, Vertical Lin, and Vertical Hold.


Wayne.

General Electric T9
General Electric T9


General Electric T9 T12 Circuit Diagram


 
 Return to top of page · Post #: 2 · Written at 8:34:57 PM on 19 September 2019.
Brad's avatar
 Administrator
 Location: Greenwich, NSW
 Member since 15 November 2005
 Member #: 1
 Postcount: 5505

Photos and document uploaded.


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

 
 Return to top of page · Post #: 3 · Written at 11:17:47 PM on 19 September 2019.
GTC's avatar
 GTC
 Location: Sydney, NSW
 Member since 28 January 2011
 Member #: 823
 Postcount: 5262

Power consumption for this set is 150 Watts

Be intereresting to know its power consumption on standby.


 
 Return to top of page · Post #: 4 · Written at 10:12:43 AM on 20 September 2019.
Irext's avatar
 Location: Werribee South, VIC
 Member since 30 September 2016
 Member #: 1981
 Postcount: 196

Does that model have the satellite transformer like it's 11 inch little brother. (native 110V)
I used to work on the 11 inch model as an apprentice and they were not my favourite by any means.
They suffered from heat greatly as they were very crammed in.
Worked well enough once their ills were sorted out.
The AWA P1 was far superior.
Sourcing the compactron tubes could be an issue if it needs any.
Good luck with it.


 
 Return to top of page · Post #: 5 · Written at 11:39:18 AM on 20 September 2019.
GTC's avatar
 GTC
 Location: Sydney, NSW
 Member since 28 January 2011
 Member #: 823
 Postcount: 5262

Sourcing the compactron tubes could be an issue if it needs any.

This guy in Florida stocks a wide variety of valves: http://www.esrcvacuumtubes.com/


 
 Return to top of page · Post #: 6 · Written at 9:52:15 PM on 21 September 2019.
NewVista's avatar
 Location: MilwWI, US
 Member since 10 May 2013
 Member #: 1340
 Postcount: 604

"They suffered from heat greatly.."

Like its sister set the GE 'PortaColour' from same year, 1967, available in NTSC, and PAL for German market.


 
 Return to top of page · Post #: 7 · Written at 6:53:41 PM on 15 October 2019.
Labrat's avatar
 Location: Penrith, NSW
 Member since 7 April 2012
 Member #: 1128
 Postcount: 269

Hello GTC.

Although the power consumption is quoted as 150 Watts,
when running with a non-changing test pattern,
I get a consumption figure of 122.5W,
and on standby I get 32.7W.

Wayne.


 
 Return to top of page · Post #: 8 · Written at 7:51:04 PM on 15 October 2019.
GTC's avatar
 GTC
 Location: Sydney, NSW
 Member since 28 January 2011
 Member #: 823
 Postcount: 5262

on standby I get 32.7W

So roughly the equivalent of having an incandescent table lamp burning all day and night.


 
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