More screen anomalies

[TinCanAlley]

Originally Posted by Eric H

Is there a screw in the center of the cap on the inside? If so you probably just loosen that screw and pull out the old wire, reverse process to install.

I haven't removed the cap yet, but if I look closely, the pink lead from the divider isn't all the way forward like the anode. I'm attaching a pic. It's the best one I have of it clean. I can find plenty of pics when it was dirty and you couldn't see through it.

I guess I'll know tomorrow when I ground it and remove it.

[zeno]

Originally Posted by TinCanAlley

I haven't removed the cap yet, but if I look closely, the pink lead from the divider isn't all the way forward like the anode. I'm attaching a pic. It's the best one I have of it clean. I can find plenty of pics when it was dirty and you couldn't see through it.

I guess I'll know tomorrow when I ground it and remove it.

Thats the old style connector. If you have a NOS tripler use
the larger brown one off it. Usually they have a small phillips
clamping the wires down. Thats IF it has 2 holes !

The 103-193 came in at least 2 styles. Fat grey ones & later
plain old black. Dont worry about them unless they have been
changed.

Grounds I assume you checked the terminal strip grounds.

When u attack the jail bars. I think you have a generator.
Hook it up & if it has a staircase pattern ( stripes going from
white to black across the screen) look at the video with the
scope. You will see two lines of a staircase. This shows you
how the levels relate to the pattern. Go to the IF output
( point 38 or C1 on Sams)
first at 7875 cycles & you will see 2 lines of the pix complete
with staircases at apx 1.5 V. This is raw unblanked video
sync & all. Next put the generator on blank raster.
If the bars have been introduced at that point you will
see 10 little bumps, if not nothing but a line between the
horz pulses. Work your way to the right Q203 B, Q203 C,
Q204 B, Q204 E, etc until you see them. The pattern will
get bigger & be blanked but you will see two lines.

One other thing. Odds are this set ran for years with too
much HV. Check the ABL that is off the tripler at R362.
CR223, R359, 360, Q201 etc.

While you are at it get an old book or look on internet for
what the things on the scope are. Sync pulses,
burst, back porch, blacker than black etc. It will help you
a lot.

73 fer now Zeno

[TinCanAlley]

Originally Posted by zeno

Thats the old style connector. If you have a NOS tripler use
the larger brown one off it. Usually they have a small phillips
clamping the wires down. Thats IF it has 2 holes !

The 103-193 came in at least 2 styles. Fat grey ones & later
plain old black. Dont worry about them unless they have been
changed.

Grounds I assume you checked the terminal strip grounds.

When u attack the jail bars. I think you have a generator.
Hook it up & if it has a staircase pattern ( stripes going from
white to black across the screen) look at the video with the
scope. You will see two lines of a staircase. This shows you
how the levels relate to the pattern. Go to the IF output
( point 38 or C1 on Sams)
first at 7875 cycles & you will see 2 lines of the pix complete
with staircases at apx 1.5 V. This is raw unblanked video
sync & all. Next put the generator on blank raster.
If the bars have been introduced at that point you will
see 10 little bumps, if not nothing but a line between the
horz pulses. Work your way to the right Q203 B, Q203 C,
Q204 B, Q204 E, etc until you see them. The pattern will
get bigger & be blanked but you will see two lines.

One other thing. Odds are this set ran for years with too
much HV. Check the ABL that is off the tripler at R362.
CR223, R359, 360, Q201 etc.

While you are at it get an old book or look on internet for
what the things on the scope are. Sync pulses,
burst, back porch, blacker than black etc. It will help you
a lot.

73 fer now Zeno

When you say check the terminal strip grounds, do you mean check to see if they're soldered to the chassis?

My generator doesn't have the stairs, but I have been wanting to get a newer one. Any suggestions on an inexpensive, but decent one?

The ABL you mentioned I'll take a look. I do have a new Q201 and can get an NOS CR223 (Zener Diode) if need be.

[TinCanAlley]

When all these problems are fixed, I'm putting this fiber optic sign proudly over the set. Right now it's hanging from the ceiling.