Small NTSC Monochrome display problem

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macona 14 years ago

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I have a small (4.5") monochrome CRT in a piece of process monitoring equipment that is not working. No video display. HV seems to be good, filament is on. Even if I turn the brt and cont pots I get no raster. Thinking it might be the video amp section?

Going to try and contact the company tomorrow. It was made by Wintron who seems to have been absorbed by Video Display Corp. I am not expecting much.

If anyone has any ideas I am all ears.

-Jerry

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Joe Smith 14 years ago

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Are you sure the signal is getting to it.?Is it a 9-pin ?

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Jerry Biehler 14 years ago

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Yeah, it had a signal. Scope showed it. I eventually figured out the CRT itself was bad. Tried hooking external HV to the anode cap and nothing. Found another unit on ebay and with a good CRT and tried it with the other board and verified the CRT was bad.

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