Quote:
Originally Posted by Phil Nelson
So, it worked (full raster) when you put it away, and then the vertical collapsed when you brought it out and tried it again?
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Yup
Quote:
Originally Posted by Phil Nelson
I'd look for a loose or broken connection somewhere. Have you tried wiggling the tubes? Did you ever clean the tube pins & sockets? Did you clean controls (such as vertical hold)? Is it possible that a blob of solder or a snipped wire stub fell into the wrong place and made a short circuit? Eliminate simple/obvious causes like that before you start chasing more exotic issues.
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I did all of that previously. No blobs of solder...I'm very careful about that.
Quote:
Originally Posted by Phil Nelson
I would also put back the resistor that you eliminated. Parts are there for a reason.
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That resistor was
not original to the set, and therefore was not even listed in the schematic. It was one of the resistors I put in when I took the celenium rectifiers out and replaced them with diodes.
Quote:
Originally Posted by Phil Nelson
If your service manual includes a voltage chart, how about checking the voltages on the vertical tubes? Same deal if the manual has a resistance chart.
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Still haven't gotten to checking voltages while on, but did check resistances. Did not help at all. Everything was off, making me think my schematic is wrong for the set. I expected to find a few values off, but not everything!
I did find the reason though. There is a shielded wire that runs from the vert out. tube to a lug with some caps on it, and I found that the outer shielding of the wire was shorting to the inner. Seperated the two at the end of the wire and BAM! Full deflection back
