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  #1  
Old 08-15-2018, 10:53 AM
zeno's Avatar
zeno zeno is offline
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Look at CRT socket. The 3 color outputs have white paint on
the PCB. They are marked E B & C measure the C in DC volts.
The G-2 should be marked too. Use a meter rated at 800-1000
volts as it can be adjusted that high. Normal voltage is apx 400-500.

Almost all in line tubes will have the same set up & its common
to make tests here.

73 Zeno
LFOD !
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  #2  
Old 08-15-2018, 10:36 PM
Sealtest Sealtest is offline
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Quote:
Originally Posted by zeno View Post
Look at CRT socket. The 3 color outputs have white paint on
the PCB. They are marked E B & C measure the C in DC volts.
The G-2 should be marked too. Use a meter rated at 800-1000
volts as it can be adjusted that high. Normal voltage is apx 400-500.

Almost all in line tubes will have the same set up & its common
to make tests here.

73 Zeno
LFOD !

The three color controls had no markings for what was what, and the only things with the E C & B markings are transistors on the neck board.

I tested the voltages on the controls and got nothing on DC, then figured I misread something and tried AC. Still no voltage. I grabbed another meter and still got nothing. So the issue is the neck board?

Have to admit it, but the high voltages can be a bit scary sometimes.
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  #3  
Old 08-16-2018, 07:31 AM
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zeno zeno is offline
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Measure at the C of one of the transistors. Not the
controls.
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