Picture has black stripes across it, remaining picture stripes brighter. Can collapase to a very bright band about 5mm high across middle of screen - still has colour. Can recover full and good picture when beaten in just the right way.
As it responds to "tap test" I assume a dry joint. Not had it open yet. Where should I start to look? Component ID numbers on circuit board would be nice.
Yes I have been shown how to and will discharge the tube. Any caps I should clamp?
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