Question about RCA Televison & Video
After I unplug it for 5 minutes it works fine for a while,then it happens again after a few days.
Posted by Anonymous on
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Posted on Jan 02, 2017
It seems as though from your description it is just the brightness changing. The Cathode Ray Tube has three electron guns at the back end. These are for green, blue, and red. Each gun has a cathode and a grid. Nearly all control the brightness by having the grids tied to a variable voltage. And nearly all control the colour and luminance by an amplifier connected to each cathode. As you do not say the colours change the the amlifiers are OK. I would suggest the voltage to the grids ( or cathodes in some), is unstable due to a bad connection or a dry joint, or a faulty resistor in that part of the circuit. Very old sets without remote control used a potentiometer to vary the brightness. A voltmeter is all that is needed. When the picture goes off try holding the increase brightness for some time, to see if it reappears.
Posted on Nov 05, 2006
SOURCE: JVC tv i'art blinking timer
It is protecting you and itself with high probability.
Power supplies in modern electronic devices are designed to cycle if there is a fault in circuitry they are servicing and because of the design, also will not turn on completely if they are failing.
The older style of power supply was 'dumb' and unable to do this so could cause fires if the failure wasn't teh 'right' kind to blow the main fuse.
I agree with the manual; this is a job for a tech.
Posted on Aug 23, 2008
SOURCE: RCA 24V414T KEEPS TURNING OFF
it could be a ghost but most likely a bad solder connection , crystal(controls the eprom)(menu chip) , or the eprom chip itself will need to be replaced
Posted on Dec 01, 2008
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