seeing double

[Microtrol]

Hi all,
so far this forum has been a great source of information and once again I am back again. I have repaired the connector on my 12lp4 tube (help from here) and started up the Philco 49 tv and the picture tube comes up. Now i am using a vcr as the input and i get a picture although ugly, but it shows up as two images stacked vertically (see pic). The tv locks horizontally and vertically but has the two images. any suggestions?

Thanks,

[Eric H]

Your Vertical oscillator is running too slow by half so you are getting two pictures stacked on top of each other.

Look for a seriously out of spec resistor or an incorrect capacitor in the Oscillator tube circuit.

What happens when you turn the vert hold control?

[Microtrol]

When the vert control is adjusted the screen starts to roll, and will stop at any one of the half screen start positions, I ill check the oscillator area for incorrect values, thanks

[Microtrol]

Ok, I looked over the osc circuit and found that i had left a older original orange drop cap in the unit thinking it should be ok, replaced it and voila, single screen, it periodically looses vert lock but I did place just a temp cap with a close value and need to install a proper cap. found 5 more of the older caps and will replace them later on, once agin, thanks for the info, you guys are lifesavers.

[Big Dave]

Look for and replace any micamolds. If you see what looks like a mica, but its value is 1000pf or more, replace it.