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post #1 of 9 Old 10-19-2010, 07:08 PM - Thread Starter
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I've got a salvaged color TV from the trash.
Toshiba model CF27H20.
No remote control, I do have a PDF of the user's manual.
Power comes on, and I'm able to hook up a DVD player so that you can hear sound, but there is no picture coming through.

It does display words on-screen from the menu, but no images are seeming to transmit from the connected DVD player, just sound.

Is there any safe and easy way to test to see if the picture tube is dead?
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post #2 of 9 Old 10-19-2010, 07:12 PM
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Wrong section but the tube is not dead if you see text from the menu.

Might be a bad input board. Maybe a loose connection or solder joint inside or bad capacitor some where
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post #3 of 9 Old 10-19-2010, 07:28 PM - Thread Starter
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Thanks. Hopefully a Mod will move the query where it belongs. Meanwhile, any advice on how to determine what's wrong?
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post #4 of 9 Old 10-19-2010, 09:21 PM
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Quote:
Originally Posted by bearcat22 View Post

Meanwhile, any advice on how to determine what's wrong?

depends. are you and electronics technician or was your dad a TV repairman?

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post #5 of 9 Old 10-24-2010, 05:20 AM
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Have you tried inputs other than the one the DVD player is connected to?

Former USSB uplink operator.
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post #6 of 9 Old 10-24-2010, 12:58 PM
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Careful if you're pulling it apart. There are huge capacitors in there that, even after 20 years, can hold on to a fatal charge. Bring to a technician.
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post #7 of 9 Old 10-25-2010, 08:20 AM
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Quote:
Originally Posted by krazyjosh5 View Post

Careful if you're pulling it apart. There are huge capacitors in there that, even after 20 years, can hold on to a fatal charge. Bring to a technician.

As long as he doesn't bring it to you.

The above statement is complete BS. The only thing that holds any kind of charge is the picture tube itself.

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post #8 of 9 Old 10-25-2010, 08:35 AM
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Curt so its still possible to get A shock off A Tube when its not even running

What about A CRT Projection tube like a Lug or P16?
if by chance you touched the pins on the neck could it shock you after A day or so

Cheers..
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post #9 of 9 Old 10-25-2010, 09:54 AM
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A CRT tube acts like a capacitor, and a large direct view TV, say 25" and larger will indeed store electricity, even when discharged. WIth the larger tubes, I have gotten zapped when handling the raw CRT tube, but it all has to do with tube surface area.

Small CRT FP tubes will store a charge as well, but you'll never feel it (at least I don't), when handling them.

The one exception is if you're playing in the HV area of a CRT projector that has just been turned off. Then I always discharge the red HV lead to the chassis, and do it again 2-3 minutes later to be safe.

Back to the FP TV: If you're not playing with the HV area of the set, then the chassis itself is safe to touch within a minute of unplugging it, and the chassis does not store 'fatal' voltages for 20 years. Josh is indeed 'Krazy'

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