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Old 02-06-2017, 08:34 PM
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vts1134 vts1134 is offline
Looking For Time
 
Join Date: Apr 2011
Location: Pittsburgh, PA
Posts: 1,532
I thought I'd update my problems list.


1- Raster is off center to the left.
Still working on this one

2- There appears to be a slight ripple present in the vertical.
SOLVED! There was a power cord close to the base of the CRT.

3- There are three extremely faint vertical bars on the left side of the picture.
Still working on this. I'm going to focus on this next. I'm going to hook up my video generator to the set to test whether the problem is in the video inverter I built or the set.

4- The picture focuses well in the center, but not at the edges.
Still working on this. I like Ben's suggestion that it could be the crt itself. I have another 10FP4 that I'll swap in the set to see if it's any different.

5- The horizontal linearity isn't great.
SOLVED! This was also caused by the power cord's proximity to the crt base.

6- The vertical deflection is collapsed on startup (although tonight it didn't happen)
I'm going to call this one SOLVED! I resoldered pins on the vertical oscillator and slightly moved one of the capacitors on that tube and the problem has not returned the past 5-10 times I've turned the set on.

7- There is a slight buzz in the audio (only audible when no audio is present)
This problem is still happening, but I might just be too picky.

8-There is a loud crackle sound sporadically coming from the speaker.
SOLVED! Cleaning the tube base on the audio output tube cleared this up.
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