Another craigslist project.. A sears console with no raster.

[zeno]

Before you go further make 2 DC measurements.
1) measure the collector of one of the 3 video outputs on
the CRT socket.
2) the G-2 ( screen ) voltage at the CRT socket.

This narrows things down.
The colored blobs are normally seen at turn off & is usually normal.
BTW try the G-2 control on the FBT. Just turn it up a tad.

73 Zeno
LFOD !

Originally Posted by Sealtest

Resoldering did nothing, so I will have to pull the board.

When the set is powered on, there is an extremely bright blue and green dot on the screen. What is this?

[Sealtest]

Originally Posted by zeno

Before you go further make 2 DC measurements.
1) measure the collector of one of the 3 video outputs on
the CRT socket.
2) the G-2 ( screen ) voltage at the CRT socket.

This narrows things down.
The colored blobs are normally seen at turn off & is usually normal.
BTW try the G-2 control on the FBT. Just turn it up a tad.

73 Zeno
LFOD !

I have a lot of stupid questions since i have never really taken a voltage measurement on the CRT out of fear of damaging tools.

What is the collector and where do I find it? I'm also not sure how to measure the G2 voltage. I know of the G2 controls but not where to check the voltages.

Which G2 control and what is the "FBT"? Sorry about the stupid questions.