Raster lines on K7000 19in w P448 neck board

[denikar]

I just married a rebuilt K7000 with a rebuilt P448 neck board and am seeing thick raster lines as shown in the pic. Adjusting the flyback makes no difference in the lines. Any troubleshooting suggestions would be appreciated.

 

[parism]

I'd check the horizontal hold pot, those look like sync issues to me.

p

 

[KaBoom1701]

I like it. Leave it be. LOL

 

[denikar]

Adjusting the pot via micro movements got rid of the lines, but then half the screen was on one side and half on the other. Stupid me was feeding the +sync signals to it instead of negative. Now I have a good image but I need to flip the yoke wires as it is upside down.

 

[mecha]

Adjusting the pot via micro movements got rid of the lines, but then half the screen was on one side and half on the other. Stupid me was feeding the +sync signals to it instead of negative. Now I have a good image but I need to flip the yoke wires as it is upside down.

I read the first sentence and thought "sync polarity". and then you redeemed yourself. LOL