Hello All,
Now that I had a nice bright beautiful raster, I lost vertical height. I was trying to adjust the vertical hold when the vertical deflection disappeared.
I'll solve this little problem, and everything should work fine.
Wow! That horizontal line can be made very bright on my check tube.

Dave

Hello Again All,
The vertical oscillator is working "ok" but it seems that it wont sync. It may be ok. I must have thrown the Horizontal Alignment off So I'll have to borrow an oscilloscope and make it right after I figure out why I am only receiving one channel even though the tuner is connected. So I better re-name this thread KCS-28-1 troubles.
I cannot tell how good the picture looks with this check tube. I only know that I now have high voltage. I will soon have a 10BP4. That should make things a lot easier.

Thanks,

Dave
:Hello All,
: Now that I had a nice bright beautiful raster, I lost vertical height. I was trying to adjust the vertical hold when the vertical deflection disappeared.
: I'll solve this little problem, and everything should work fine.
: Wow! That horizontal line can be made very bright on my check tube.
:
:Dave

I meant to say that the tuner is connected to cable. But for some reason the "to cable" is missing.

:Hello Again All,
: The vertical oscillator is working "ok" but it seems that it wont sync. It may be ok. I must have thrown the Horizontal Alignment off So I'll have to borrow an oscilloscope and make it right after I figure out why I am only receiving one channel even though the tuner is connected. So I better re-name this thread KCS-28-1 troubles.
: I cannot tell how good the picture looks with this check tube. I only know that I now have high voltage. I will soon have a 10BP4. That should make things a lot easier.
:
:Thanks,
:
:Dave
::Hello All,
:: Now that I had a nice bright beautiful raster, I lost vertical height. I was trying to adjust the vertical hold when the vertical deflection disappeared.
:: I'll solve this little problem, and everything should work fine.
:: Wow! That horizontal line can be made very bright on my check tube.
::
::Dave

Ye olde 28 thread….
Wow that statement on the sync needs to be clarified a bit . If you are having a bright….(according to brite controls setting) …white line across the screen
from left to right? You couldn’t confirm if you were either out of vert or hoz sync
either since you would have no image present to reference to. Except in the case
of loss of synchronized vert sync , whereupon you might see the line bobble up
and down just a micro amount on sync shift. If the hoz sync was at fault..considering that you had the viewable video image…it could be to the minor effect of an AFC shift/pull whereupon the picture would slip slowly from side to side and not lock in, or if the hoz osc freq drift
is too excessive you would have the pic drop out and shift to progressive sets of ~45 deg sloped lined with no video being visible and progressively more lines as the frequency deviated from station hoz sync. The initial fallout slope of the hoz line sets being in accordance to whether the then free running osc freq is above or below the correct freq.

Also, since that yoke…if I remember…is statically / fix mounted to the chassis,
you would not have the possibility of the test tube being turned askew 90 degrees
within a loose yoke laying aside on the bench. Thus, erroneously assuming a loss
of vert sweep while in actuality the loss of drive continuity to the yokes hoz deflection coils could be the problem….since you had been previously at work in the hoz sweep and HV section with the replacement of the sets flyback.
Considering that the problem is in actuality the failure of drive signal to the vert yoke windings, the simplest procedure is to merely take a ~one tenth mother farad paper/poly/film/ceramic of adequate PIV ratings for the circuitry voltage to be experienced to provide an isolated coupling interface. You then connect a test lead to one of its leads and go to the hot filament lead of either the 6SN7 or the 6K6 tubes for some raw AC drive signal…not a saw-tooth mind you….but adequate as a P/P sine .The other free end of the cap then is used to inject a drive signal into the 1st grid ckt of the 6K6 whereupon you might then expect in the order of ½ an inch or more of vertical deflection on the tube face. If that works then shift the drive over to the osc tubes 1st grid where you can then expect a much increased visual sweep on the tube face, but distorted due to being a sine format vice saw and free running if video is connected.
That should confirm some degree of proper operation of the vert osc and output stages , soooooo if you were still met with a sole line across the screen during those tests you had better look for a bad component(s) voltage supply or possibly a mis-wire back in your flyback change out.

As for the cable connection, that should be no problem there , with that possibility of having even a higher quality of signal coming into the set on channels 2-13 …or on channel 3 if it should be from a cable box converter output.

Thumbnail reference for you and the peanut gallery:
http://img174.imageshack.us/img174/259/kcs28vertcktxc0.gif

Give us an update

73’s de Edd