D9200 screen bowing issues - HELP

[deuceduzit]

I have a Wells Gardner d9200 that has a bow on the bottom of the screen... Its like pincushion but vertical and only on the bottom of the screen... Anyone out there have any experience with these monitors? I was told it may be a tube issue... (I'm hoping its not)...Will a recap help? If so, which caps should I go for? Thanks in advance...

[grantspain]

you should be able to adjust that out in the extended menu
hold down and select to access factory settings

[deuceduzit]

I tried that but there isn't anything I can adjust? What am I looking for? There is pincusion for the left and right side but nothing for top and bottom curve...

[grantspain]

post a photo of the problem

[galaxian77]

I know this post is old, but I'm sure the problem will be seen for generations to come. Is it anything like this picture ?

https://lh6.googleusercontent.com/-HYFaexbpdRI/VGJW-3HIYWI/AAAAAAAAD_0/p4SISX6gNt0/w604-h340-no/20141111_164730.jpg

[deuceduzit]

Here's a picture of the problem... Any help would greatly be appreciated.

post a photo of the problem

[deuceduzit]

Another pic.

[ed12]

nope that is yoke....it has shifted for the normal reason's

ed

[deuceduzit]

So... How do i fix the problem? I think my d9200 has a non removable yoke... Its bonded to the tube.

[ed12]

yes it should be bounded
there is a small test u can do
CATUION u will be around some high volt's
were glove's here,with it running
try to shift the youke up and down,see if it move's ? if it dose it means
the glue has come free,this is normal in them unit's,and is fixable,
as a rule this turn's into a purity problem first,then as heat/time get to the glue
it becomes horz/vert linearity problems
the latter is what u have in the bowing
once u have done the test i spoke of get back to me,i will explain the fix
if it is the problem ?.

ed

[deuceduzit]

Cool. I'll try that this weekend. Thank you for your help

yes it should be bounded
there is a small test u can do
CATUION u will be around some high volt's
were glove's here,with it running
try to shift the youke up and down,see if it move's ? if it dose it means
the glue has come free,this is normal in them unit's,and is fixable,
as a rule this turn's into a purity problem first,then as heat/time get to the glue
it becomes horz/vert linearity problems
the latter is what u have in the bowing
once u have done the test i spoke of get back to me,i will explain the fix
if it is the problem ?.

ed

[deuceduzit]

So I tried turning the yoke left and right and it won't budge.... No change... However I did notice I am missing what looks like a maget. First picture shows the grey ring with a rectangular magnet on top, 2nd pic shows the bottom missing magnet. I woner if getting a magnet in there will solve my problem.

[Ken Layton]

This thread may help:

http://forums.arcade-museum.com/showthread.php?t=185603

These monitors had crappy capacitors installed at the factory and it is strongly advised to install a full capkit. Zanen Electronics sells kit # 260 for this model and it contains 64 electrolytic capacitors for just $9.95