HELP needed. Was CRT arcing now Fuzzy Picture

P

Paul Richards

Guest
Originally I had arcing flyback problem but this is now fixed. I
removed the flyback, found a little pinhole, filled it and fixed it.

All was okay at 1st but there was a little arcing from metal to right
of flyback at power on and off only. Picture was fine. Turned it on
and off a few times and the picture is no longer fine! - it's really
fuzzy and moving focus controls etc does not help.

I know what was causing the arcing - I forgot to reattch one of the
ground leads from the pcb on the back of the electron gun. Reattaching
this to ground has cured the arcing but now my picture is all fuzzy.
Guess I must have blown something? Any help would be really
appreciated. I can send a picture of the fuzzy screen to anyone
interested.

Please copy replies to me on paul1richards@yahoo.co.uk

Thanks,
Paul.
 
The HV module in the flyback assy may have gone defective, or the tube has
been damaged. Try the flyback assy first.

--

Greetings,

Jerry Greenberg GLG Technologies GLG
=========================================
WebPage http://www.zoom-one.com
Electronics http://www.zoom-one.com/electron.htm
=========================================


"Paul Richards" <paul1richards@yahoo.co.uk> wrote in message
news:f0acfbaf.0311021607.5593db@posting.google.com...
Originally I had arcing flyback problem but this is now fixed. I
removed the flyback, found a little pinhole, filled it and fixed it.

All was okay at 1st but there was a little arcing from metal to right
of flyback at power on and off only. Picture was fine. Turned it on
and off a few times and the picture is no longer fine! - it's really
fuzzy and moving focus controls etc does not help.

I know what was causing the arcing - I forgot to reattch one of the
ground leads from the pcb on the back of the electron gun. Reattaching
this to ground has cured the arcing but now my picture is all fuzzy.
Guess I must have blown something? Any help would be really
appreciated. I can send a picture of the fuzzy screen to anyone
interested.

Please copy replies to me on paul1richards@yahoo.co.uk

Thanks,
Paul.
 
I have ordered a replacement flyback and will try fitting this first.
I should add that the model of the monitor driver board is
Wells-Gardner 25K7191.

Paul.



"Jerry G." <jerryg50@hotmail.com> wrote in message news:<bo4i8m$1ig$2@news.eusc.inter.net>...
The HV module in the flyback assy may have gone defective, or the tube has
been damaged. Try the flyback assy first.

--

Greetings,

Jerry Greenberg GLG Technologies GLG
=========================================
WebPage http://www.zoom-one.com
Electronics http://www.zoom-one.com/electron.htm
=========================================


"Paul Richards" <paul1richards@yahoo.co.uk> wrote in message
news:f0acfbaf.0311021607.5593db@posting.google.com...
Originally I had arcing flyback problem but this is now fixed. I
removed the flyback, found a little pinhole, filled it and fixed it.

All was okay at 1st but there was a little arcing from metal to right
of flyback at power on and off only. Picture was fine. Turned it on
and off a few times and the picture is no longer fine! - it's really
fuzzy and moving focus controls etc does not help.

I know what was causing the arcing - I forgot to reattch one of the
ground leads from the pcb on the back of the electron gun. Reattaching
this to ground has cured the arcing but now my picture is all fuzzy.
Guess I must have blown something? Any help would be really
appreciated. I can send a picture of the fuzzy screen to anyone
interested.

Please copy replies to me on paul1richards@yahoo.co.uk

Thanks,
Paul.
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