[Central-Electronics] CE-100V Scope

[Gordon]

I checked all the components in the Scope Circuit, but failed to check 
the three Pots.  Intensity, Focus and width.
The 100K measures only 60K , the 500K measure around 350K and the other 
100K is open.. Hmmmm....
All were measured Out of the circuit.
I have new ones ordered.  I hope this cures it.

73,
Gordon
N6WK



On 9/16/2013 12:01 PM, Gordon wrote:
> I am still fighting this scope problem.
> Brian is helping. Thank You Brian.
> Here are the pictures I show on my CE-100V Scope
> I am puzzled why do I show two lines when the Horizontal input is 
> grounded but only One when the Vertical is grounded ?
> All the 2.2 meg resistors have been changed as well as the .01 caps at 
> the CRT
> See them here:  http://www.n6wk.com/CE-100V%20Scope/index.html
>
>
> 73,
> Gordon
>
>
> On 9/13/2013 4:24 PM, LeeCraner at aol.com wrote:
>> Gordon:
>> I haven't been following this thread, so I don't know what you've 
>> tried yet.  Separately, I've sent you a schematic of just the scope 
>> portion of the transmitter (actually, the 200V scope circuit, but it 
>> should be the same in you're 100V). This schematic is part (page 19) 
>> of my dissected 200V schematic set available on my website:
>> http://www.emmittsfixitshop.com/Projects_CE200V.html
>> What you should have on your horizontal plates is a demodulated 8Mc 
>> signal.  If you have a regular bench scope, trace the 8Mc signal from 
>> the 8Mc amp plate through phono jack/plug feeding the xmtr's scope 
>> assembly and on through to pins 3 and 8 on the xmtr's CRT.  You 
>> should find your problem in short order.
>> 73
>> Lee WB6SSW
>> In a message dated 9/13/2013 3:40:35 P.M. Pacific Daylight Time, 
>> gordon at n6wk.com writes:
>>
>>     I received the Correct CRT tube today.
>>     I installed it in great anticipation, but when I turned the radio
>>     on and
>>     it warmed up, The Vertical Line is still there  :-(
>>     I noticed that V21 is an 8mc Amp, So should I be seeing a 8Mc
>>     signal on
>>     Pin 9 of that tube?
>>     I notice the Focus control works, the Intensity works but the width
>>     doesn't seem to do much .
>>
>>     I am baffled !
>>
>>     73,
>>     Gordon
>>     N6WK
>>
>>
>>     On 9/9/2013 4:39 AM, Paul wrote:
>>     > Just curious, what mode are you testing the scope in? You
>>     mention "when you talk" so are you only testing it in a voice mode
>>     like AM or SSB? What do you see if you test it in CW mode? If SSB
>>     mode, have you nulled the carrier, as you adjust the null controls
>>     you should see the vertical trace reduce in size until it becomes
>>     a pinprick in the center of the scope.
>>     >
>>     > Keep at the restoration, took me over a year to do my 200V and
>>     now it is my main BA transmitter paired with my 75A-4. I use the
>>     200V far more than my KWS-1, especially since I added the 160m mod
>>     to the 200V. That's where the KWS-1 really falls down, no 160m
>>     although the 75A-4 has 160m. What was Collins thinking?
>>     >
>>     >
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