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Old 4th Jul 2020, 7:42 pm   #2
high_vacuum_house
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Join Date: May 2003
Location: Belper Derbyshire
Posts: 1,910
Smile Re: It's got a valve gone!

Looks like it has lost its vacuum. Is there a crack on the base possibly emanating from one of the pins ?
My Ekco TMB272 when restoration was almost complete gave a good picture one evening, Next time I ran it the next day I had a frame collapse. The ECL80 in the frame stage had fractured where the glass button base was fused to the bulb. The bulb could be removed leaving the valve cage and button with pins in its valve holder. It was a Mullard one as well !!

A replacement was a complete cure. I have no idea why it just decided to crack.

Christopher Capener
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Interests in the collection and restoration of Tefifon players and 405 line television
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