Motorola roundie

[old_tv_nut]

Originally Posted by timmy

I checked pin 1-2 on the detector and it was -10.26 and +10.25 all I ever did was turn the set on from time to time how could it become out of phase unless a component has failed and whatever failed is preventing the color to be right it’s got to be. Which the voltages won’t be right either

The absolute value is not important for the oscillator centering, but equal and opposite are. So, -10.26 and +10.26 shows the oscillator coil is correctly adjusted. The fact that its 10.26 and not 11 may mean you haven't got the maximum burst amplitude going in, or it may be meaningless.
If you went through the AFC alignment successfully, then it is probable that everything is OK in this section.

Time to step back, look at what is wrong with the picture at this point, and try to diagnose the cause without scatter-shot checking of this and that.

[timmy]

Well all I have to do is find out why colors are missing

[timmy]

I’m lost at this point

[Yamamaya42]

Measure the voltages at pins 9-8-1 on V20 V24 and V25 compare to what is listen on the SAMs.

[timmy]

Originally Posted by Yamamaya42

Measure the voltages at pins 9-8-1 on V20 V24 and V25 compare to what is listen on the SAMs.

Ok I’ll check that

[old_tv_nut]

Originally Posted by timmy

Well all I have to do is find out why colors are missing

What exactly do you mean by "colors are msising?" You need to learn to give more precise descriptions of symptoms - it will not only help those who are trying to help you, but will improve your ability to trace down problems yourself.

[timmy]

Originally Posted by old_tv_nut

What exactly do you mean by "colors are msising?" You need to learn to give more precise descriptions of symptoms - it will not only help those who are trying to help you, but will improve your ability to trace down problems yourself.

I have color Lock Screen is stable but all that’s there is red blues are red any other colors are red there are pics on a page back of 2

[Yamamaya42]

Originally Posted by old_tv_nut

What exactly do you mean by "colors are msising?" You need to learn to give more precise descriptions of symptoms - it will not only help those who are trying to help you, but will improve your ability to trace down problems yourself.

What would help with this, is a snapshot of something familiar, with the three primary colors perhaps, like I mentioned, I used Lost In Space, because of the loud colors used, and the standards of the colors used.

Sent from my VS501 using Tapatalk

[old_tv_nut]

First thing to do is turn the color all the way down and see that you have a good black and white image.

[timmy]

Originally Posted by old_tv_nut

First thing to do is turn the color all the way down and see that you have a good black and white image.

Color turned down I have a good b&w image

[Username1]

..

Originally Posted by timmy

I checked pin 1-2 on the detector and it was -10.26 and +10.25 all I ever did was turn the set on from time to time how could it become out of phase unless a component has failed and whatever failed is preventing the color to be right it’s got to be. Which the voltages won’t be right either

This is very good to see! At this point there are a few things I would like to see.
While you have the color locked - even though they are incorrect, Please check
the voltages on the pins of each tube we have talked about, please clearly post
any that are off.... I see pins 1, & 2 of the phase detector are behaving better.
And it's ok that they are 10. & not 12 at this point.

I think you should tune in a news broadcast and focus on checking for
response of the color knob, and the tint knob. Can you fully saturate
the screen with color? as in the color is so bright that it's impossible
to watch? and when you turn the tint knob do you have a range
where you can definitely see that it's working - even if the colors
are wrong. If you have good working range on these knobs, then
I think it's time to figure out why the colors are wrong....

If you can get a range on the tint knob that includes getting parts of people's
faces red - green - blue that would be cool..... Can you confirm that when
you watch a news broadcast, or Daytime Soap, if they are still on, Springer
Show, whatever so you see some nice studio quality face shots, that you
are getting some range out of the tint knob....

Also I'm wondering about the voltages on Pins 1, & 7, of V24, & V25.

If you got this by replacing the crystal, then........... maybe........ you
might ........ I can't believe I'm about to say this....... Try a third
crystal........ I gotta go lay down now....... But you don't have
to do this right now, just keep it on the back burner.....


There has to be a vortex from some other dimension around Timmy's house
that causes all this......



..

[Username1]

.

One other thing..... When you put on a channel and watch something in color right now
and you tune the fine tuning knob what happens to the color at the fringe areas both
to the right and left of the fine tuning range.... How do the colors behave, does color
just drop out, do they change, anything you can observe..... Even if the colors are
wrong, does the behavior of the fine tuning at the fringes of that channel seem
to be normal....

Thanks..

.

[timmy]

Tuner seems normal using the tuner whatever color is there it will disappear normally and the other way will make color brighter and switching the channel it don’t loose lock as it used to. I tried another xtal Same thing tried the original xtal again and it has distorted colors so I put new one back. The hue makes very little difference don’t change colors as much as it should the intensity works but seems it don’t have the range it had before. It seems very odd that it looks like the xtal went bad and at the same time something else went bad how is that.

[Yamamaya42]

As a general rule, RC crystals do not go bad, and should be considered as reliable as disc caps, as they are made in very much the same way, that's not saying that they can't be damaged, or contaminated or corrupted in one way or another, but it's more likely that something changed someplace causing the old one not to work right anymore, the wrong colors with the new could be a sign of this.

[timmy]

Ok voltages
V20 9 3.045 8 8.36 1 150
V24 9 2.7 8 8.58 1 174.6 7 7.52
V25 9 2.758 8 8.50 1 142 7 7.15
Check of resistors on these 3 tube sockets are good this is bazaar
All that’s left at the demods are the few .1 and .01 caps to change