UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post

Heatercathodeshort · 25th Dec 2006, 7:41 pm

The 27" Sony tubes seemed to have a decent life. A few of the very early ones suffered a similar problem but this was sorted out.

The 29" tubes did have a problem...I used to pull 2912s off the tip weekly and every single one, without exception, had a flat tube. I gave up trying to find a decent one and that was probably just as well due to the incredible weight of the set.

I never managed to disable the blanking circuit in these models. I have no doubt this could be done. It will be interesting to see if anyone comes up with the answer.

Regards John.

25th Dec 2006, 7:41 pm	#4
Heatercathodeshort Dekatron Join Date: Jun 2005 Location: Warnham, West Sussex. 10 miles south of DORKING. Posts: 9,147	Re: TV adjustments - another quick NOOb question The 27" Sony tubes seemed to have a decent life. A few of the very early ones suffered a similar problem but this was sorted out. The 29" tubes did have a problem...I used to pull 2912s off the tip weekly and every single one, without exception, had a flat tube. I gave up trying to find a decent one and that was probably just as well due to the incredible weight of the set. I never managed to disable the blanking circuit in these models. I have no doubt this could be done. It will be interesting to see if anyone comes up with the answer. Regards John.