Vertical line only on Vertical Monitor

[cornishHen]

I have an electrohome G07 with a vertical line while running a 1981 original dedicated centipede upright.. Any ideas what this could be.. I have replaced about half of the caps so far.  BTW, this is the same machine I was trying to get working with a different monitor to no avail yet.  This Electrohome(this thread) is the monitor that came with the machine which I was hoping to avoid The other monitor thread is:
http://forum.arcadecontrols.com/index.php?topic=67097.0


Image showing problem shown below.

Thanks!

[grantspain]

frame ic,25volt feed to the frame ic whether it be cap or resistor,dry solder joints on the yoke connection

[cornishHen]

so, to clarify, I should probaly finish replacing caps especially the 3 25v caps I havent  replaces and then check for bad solders on the yolk connection?  Thanks!

[Kevin Mullins]

Just for reference - you have "vertical collapse".

[shorthair]

I thought that it if one took the trouble of re-capping, they'd do it all the way before powering and testing. Especially as the kit is cheap.

[Ken Layton]

Be sure to visit http://therealbobroberts.net/go7-1.html#vcg07

[grabmyjoystick!]

I have an electrohome G07 with a vertical line while running a 1981 original dedicated centipede upright.. Any ideas what this could be.. I have replaced about half of the caps so far.  BTW, this is the same machine I was trying to get working with a different monitor to no avail yet.  This Electrohome(this thread) is the monitor that came with the machine which I was hoping to avoid The other monitor thread is:
http://forum.arcadecontrols.com/index.php?topic=67097.0


Image showing problem shown below.

Thanks!

i just bought an arcade today, (BOMB-JACK) and i bought it cheap,..knowing that i have the same issue with my monitor too (i have a red vertical line ),..isnt that a width coil prob?..i heard i have to degauss the monitor and replace caps,...BY THE WAY,..is the width coil on the chassis or on the monitor neckboard?..i cant seem to find it! ANY info or links or pics, on how to fix this would be alot of help!...thanks!

[Ken Layton]

The width coil is shown clearly (and it's even circled) in the photo at the link I provided in the previous post.

[grabmyjoystick!]

  i appreciate the help,..but my chassis doesnt look like the one in your pic,..mine is made by aunix,..ever seen one of those before?

[Ken Layton]

Oh, the other poster was talking about an Electrohome monitor so I assumed you also had one.

I have no information on the one you mention. However, width coils are always on the main circuit board.

[grabmyjoystick!]

  i appreciate the help,..but my chassis doesnt look like the one in your pic,..i still cant find the width coil,..mine is made by aunix,..ever seen one of those before? lets see if i can show a pic,...ok,..my pics are way too big! i have to minimize my pic on my cam..sorry

[qrz]

grabby,  ur monitor a has loss of vert  ( per 2nd pic,  the tube is mounted on its side )
the width coil is NOT the issue.  the yellow and green yoke connections are for vert , w/no schematic this can be traced back to the output stage .
once there, check all 'lytic caps . if uses an output ic , check for poor solder connections on the chip.
 if transistor output , check the semiconductors and especially the resistors on supply side of stage  (looking for open resistors there)  and don't forget to check the vsize pot . 

have a model # for the monitor ?

qrz

[cornishHen]

Well, I made some progress with the issue after revisiting it.  I found a broken winding on the yoke.  I tried to jumper it with plain old insulated wire which produced a total garbage screen.

Today, I swapped a yoke from an old/working electrohome with bad burnin.   I am now getting the attached image.   The centipede image appears squished vertically and uncentered.  I tried adjusting via vlin, vheight..even tried the width coil for poops and giggles..no luck..  any ideas?

[Arm123]

definitely progress  !   

If you are not getting any response from the hrz / vrt size controls, usually this indicates a cap problem OR at worst a Vertical deflection IC replacement is needed.

Ill wait for the BIG boys to chime in and confirm...  But at least you have an image now...  congrats !   

[grantspain]

vert hold may help

[cornishHen]

VHold just makes it roll... I do get a response from VLin and Vheight but it stretched the image within the same confined area. Its as if  a viewable portion of the screen is missing..

[grantspain]

the yokes are from the exact same monitor make/model?

[cornishHen]

yes..both G07-CBO... One was originally running a centipede. and the other once ran a pole position..

[SirPeale]

I'd also guess caps.  Change the rest of them.