David Troendle, Joe Travis and I have put together a collection of scans of many of the Heath service manuals. I have the action to host these on our site and put out an announcement but I’m woefully behind on that. For now you could consult the version of the H19 manual in my Google Drive
there’s plenty of information there. Here’s the quick “troubleshooting” suggestion on vertical deflection issues:
There’s a whole section on the vertical deflection circuit, and of course checking the power supply first is always a good idea…
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Thanks for the feedback.
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It is an H19-A version with all the shielding, so I need to find the correct schematics.