question dc voltage on tv ? help.

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rascabuche

Joined: 29 Jan 2006
Posts: 43

20 Feb 2006 3:29 question dc voltage on tv ? help.

i understand that there is approximately 30k volts at the anode of the flyback.
can anyone tell me if this so and what meter i should use to measure this voltage.
thanks in advance.

rascabuche

IanP

Joined: 05 Oct 2004
Posts: 6490
Helped: 1542
Location: West Coast

20 Feb 2006 4:15 Re: question dc voltage on tv ? help.

To measure High Voltages (>1000V) you have to use a High Voltage probe ..
You can buy one ( http://www.testequity.com/products/1289/ ), or you can build one ..
Here are examples:
"Whether testing a TV with a dim picture, a helium-neon laser power supply that does work quite right, or troubleshooting some home-built high voltage project, the ability to measure 10, 20, 30, or more kV can come in handy.
This document provides information on constructing very basic high voltage probes suitable for measuring the high voltages found in consumer electronic equipment like TVs, monitors, and microwave ovens (though the latter is not recommended for safety reasons)."
http://www.repairfaq.org/sam/hvprobe.htm

http://home.austin.rr.com/cthompson15/HVProbe.html

Regards,
IanP