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Old 11th May 2010, 11:41 pm   #32
dominicbeesley
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Join Date: Nov 2004
Location: Hebden Bridge, West Yorkshire, UK.
Posts: 1,885
Default Re: Oh no - another V4!

Thanks both,

Glad you think the tube's ok - I wasn't sure that the grid isn't drawing an armfull of current! If you all think it's ok I'll continue in the same vein.

Next up I'll see if I can get the line output stage working close to normal i.e. something where 10kHz is in the middle of the line hold control and then try and get any sort of signal through to the tube.

This is my first go at diagnosing from scratch the TV24 worked ok (after I'd worked out the ion-trap). But on that one I cheated and just replaced everything!

As to the LOPT and drying out I'll give it the backside over the radiator treatment....that's worked on the TV24. Still would like to get a bit further first...is fun!

As to the tube base - I ended up remving it completely, then soldering on extension wires and refitting. Probably a waste of time but when it was loose it was definitely shorting A2 to K when wiggled too far in one direction. For now fixed with tape....

Dom
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