Quote:
Originally Posted by Bill R
You need to check the video amp and video output circuits. Some chassis used a 6GH8 as a sync and video amp before the video output. Look for bad coupling caps and out of tolerance resistors. The color burst is taken after the video output. So, if the video is low causing dark picture you will also have problems with color sync. These problems often make it look like a bad CRT.
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And dont forget the blanking tube, easy to forget. Testers only do so
much so use a known good tube when trying tubes.
73 Zeno
