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You can get a multimeter with continuity test for as little as $3 at Harbor Freight. Their ultra deluxe meter costs about twenty, and does just about everything you would ever need a meter to do to fix your television.
You can also build a continuity tester with something like a couple of C batteries, and a radio pilot lamp, like a #44-the bulb should light if the filament is intact. We only keep yammering on with this filament thing as it is very, very rare for a crt filament to blow-usually everything else in the picture tube goes bad before the filament fails.
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