Re: weird amplifone deflection prolems...

Cool... That is an odd little fault !!  Btw Guys...   I just tried the HV unit and Glass Jar trick that Andy tried the other week.  I cannot get to a working machine to test at the moment and have promised it to someone. This was a G05-802 HV unit.  I gave it 40 VDC from a Bench Power Supply (20v + 20V). The Electrode was too big to go in the neck of the Bottle/Jar, but hooked nicely on the Lip and I secured with Electrical Tape round the Neck.. It's not going anywhere !! Switched on and measured 11.75 KVDC on Electrode, 400 VDC on Pin 3, 40 VDC Pin 1 (Hi Z) , 90 VDC Pin 5.   I'd say that works !! Regards, Colin   ________________________________ From: Andrew Welburn <andy_at_andysarcade.net> To: vectorlist_at_vectorlist.org Sent: Wednesday, 11 May, 2011 14:16:07 Subject: Re: VECTOR: weird amplifone deflection prolems... I didn't recieve any wisdom on this fault from the vectorlist... i'm thinking of cancelling my subscription fee payment... booo hehe. Anyway, i fixed it.. it has taken me waaay too long to find this, at least a day and a half. Turned out to be  shorted CR10 diode, something you just don't expect as its how the spot killer samples the x deflection, i just wasn't looking in that area... You live and learn. -- Andrew Welburn http://www.andys-arcade.com ----- Original Message ----- From: "Andrew Welburn" <andy_at_andysarcade.net> To: <vectorlist_at_vectorlist.org> Sent: Thursday, April 07, 2011 12:33 PM Subject: VECTOR: weird amplifone deflection prolems... > 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 > --------------------------------------------------------------------------- > ** Unsubscribe, subscribe, or view the archives at http://www.vectorlist.org > ** Please direct other questions, comments, or problems to chris_at_westnet.com --------------------------------------------------------------------------- ** Unsubscribe, subscribe, or view the archives at http://www.vectorlist.org ** Please direct other questions, comments, or problems to chris_at_westnet.com
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Received on Wed May 11 12:00:21 2011