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#31
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Without the 115 volt B+ line connected , your sync pulses can't lock-in
the vertical or horizontal oscillators, nor would the sound work well. Ed |
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#32
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More of the Motorola 19K2
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#33
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ok, I put on tube shields, put the b plus wire back on, replaced a cap that I was told to test and here is what I have. The vertical is locking, the horizontal is jittery, and the image on the screen is a negative image...
At least it appears that way to me and still is washed out like the signal too strong or too weak. |
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#34
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It was mentioned to check the cap in b plus line to pin 5 of the video amp, which I replaced again to be safe. There is a ceramic cap in parallel with a coil in that line that might also be an issue so i did grab a replacement for it and will try it tonight...hopefully!
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#35
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i put in a new cap.....it is in parallel with a 4.5 min coil coming off of the video amp.
the picture is better,but retested the crt and it is shorted............and i do not have a replacement. so this project is on hold for now. |
| Audiokarma |
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#36
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Is it a heater-cathode short? If so just get an isolation transformer for the heater (some 'brighteners' were not brighteners, but rather isolation transformers) or add a separate heater transformer for the CRT.
__________________
Tom C. Zenith: The quality stays in EVEN after the name falls off! What I want. --> http://www.videokarma.org/showpost.p...62&postcount=4 |
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