weird amplifone deflection prolems...

From: Andrew Welburn <andy_at_andysarcade.net>
Date: Thu Apr 07 2011 - 07:33:01 EDT

hi all..

http://www.andysarcade.net/pix/DSC_1221.JPG

(ignore the colour problems, this is because the shadow mask on this tube is
burned and warped in the middle)

This amplifone deflection is kicking my arse at the moment, has anyone seen
this sort of distortion before?
Q4,Q6 is good, Q16, Q17 is good.

I'm not totally through with checking everything yet, but usually you can go
right in for transistors relating to the spacial part that is bad, but not
this time it seems..

the grid that is there is also dancing around doing a slow hula, its not
stationary...

anybody seen this sort of thing before?

--
Andrew Welburn
http://www.andys-arcade.com 
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Received on Thu Apr 7 07:34:11 2011

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