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DId you solder the flyback transformer connections..... This is the main reason these fuses fail. THe flyback is the big black component next to the fuse. poor solder connection cause oscillations.. this fuse is only .4 amps whish dosent stand up to that well.. resolder these pins on the flyback.... the first time i replaced this fuse i failed to solder played well for 2 days then came back blown again
hi the problem you are having is going to be one of the most common problems with that type of telly the problem is going to be the flyback transformer needs replacing and also the transistor neads replacing its the one located nearest to the flyback transformer and it will be on a heatsink. If you are unsure what im telling you then you shouldnt risk the repair yourself as the telly has power stored in it even when its unlpugged it might not kill you but you will get a nasty shock as the voltage is amplified inside the telly so is greater than 240v so dont mess with it unless you are sure what you are doing. If you are doing the repair yourself then you need to get the schematics so as you can get the test points that you can test using multimeter and osciloscope this telling you whats exactly wrong as a resistor or two could have blown when the transistor failed also the schematics will give you part numbers. The transistor and any resistors are easy to replace but you nedd to protect the new ones from heat damage when soldering the new ones in you need to dispurse the heat using clips or something similar. Now the difficult bit is unsoldering the flyback transformer this carrys high volts of electric and will give nasty shock if you dont dispurse the electric charge first you need to short across one of the caps to earth but you need to know the right one. to remove flyback it regiures alot of unsoldering and resoldering possibly causing damage to the new one during soldering is easily done. If you are going to get someone else to do the work like repair shop your looking at about £45 uk or $80 to $90 us so you need to think is it worth it let me know if you need further assistance ok
The P52940 uses the CTC195 series main chassis. The most common reason for the set not to start up is a shorted flyback (high voltage) transformer. The set actually does try to start, but the computer immediately detects the extra current drawn by the shorted flyback and instantly shuts the set back off. The chassis should be checked and the flyback replaced by a qualified tech familiar with RCA projection TV's.
When you change the flyback and the HOT you are supose to replace a small capacitor that came with the flyback and also the small coil l401 that connects the hot base to the horiz. driver transformer secondary is supose to be taken out, the leads scrapped off of insulation and resoldered into place.