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You've done a mistake that might me fatal indeed. There will be charge hold in the CRT even though the set is switched off, and will retain for a long time. You must have to discharge the final anode before remove the anode cap. To do this, connect one end of the multimeter probe to the tuner cover or at any ground chassis. Slowly insert the other end of the probe, by the side of the rubber boot at the final anode. The charge hold will discharge through the wire to ground. Hold it for at least 10 seconds. Now it will be safe to handle.
The usual cause is a shorted horizontal output transistor. The way this chassis is designed, the supply makes 140 volts which is always on and applied to the transistor. The heavy load on the power supply causes it to make that chirping sound as it keeps trying to start, then shuts down right away.
The h-out is Q14401, RCA part number 237470. A 2SC5148 can replace it.
Try unplugging it if color regains its the box and not the TV!! if it dont regain then the flyback needs to be looked at. I am sure its the box and not the TV and yes had problems with zenth boxes Thank you
Hi, some of those units have whats called a "RF cable" running from the back of the set to the tuner, and some are directly spot welded to the tuner, you need to remove the back from your set and see if yours is a short cable to the tuner, otherwise you have to replace the whole tuner, check the back of your set and you`ll see on a sticker the complete model number, (few numbers or letters after F32665) this is referred to as the service model number and I can look up exactly what you need to change
The F25261TX3 is a 25 inch set that uses the CTC185 series chassis. The 2 most common causes for the set not turning on are a corrupt EPROM and a bad regulator or resistor in the main power supply. This is also the chassis notorious for cracks on the shields around the tuner and microprocessor which causses the EPROM to go corrupt. These are relatively easy and simple things to correct, but the set should be serviced and modified by a qualified tech familiar with that RCA chassis.
You have a problem in the video circuit. Any video that comes into the set is not getting to the picture tube. The menus come from the system control microprocessor. This shows that the input at the picture tube itself is working. Also you system control is working.
The signal would have to be traced through the set to find out where the loss is originating.