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Make sure that you replaced the fuse with exact ratings. Low
ampere ratings will not handle current as what the original fuse installed. If
still fuse keeps blowing after replacing with the same rating, this is an
indication that you have a short on the power supply section. It can't be fixed
by replacing the fuse alone. Short usually near the AC line where parts like
the following are present.
Power Cord - even very low of
chances but still to be check.
Posistor and degaussing - even
very low of chances but still to be check.
If you don't have necessarytools and test instruments, and
can't do the job yourself, I would advice you to look for aprofessionalto troubleshoot the problem. Don't
attempt to work in the power supply if you don't know thesafety precaution.
I had a similar problem, in that I could not find the proper fuse for my set. I bought a bit higher amp fuse from Radio Shack and it ended up blowing a couple months later. I've since pulled the TV down and replaced it with an LCD set, so I've solved my problem.
But, to address yours, I don't think the amp difference would not be the problem. Likely, there is a power issue on your set causing it to draw more amps and become out of specification. Using a higher amp fuse would buy you more 'capacity', but if its blowing those too (repeatedly), its likely a real problem in the set. I'm not a TV technician, so I can't tell you why. I'd suggest taking the thing in for service (cheaper than the house call) or if that is too expensive, looking at putting your money into a set that won't give you those problems. Or, just keep replacing the fuse until it doesn't fix the problem.
If the fuse rating is correct as indicated on the board, then the PTC is probably busy going faulty. If not sure where it is located, normally on the front where the switch is and where the coil that sits around the tube is connected to the board. Little plastic box with three pins(sometimes two) black or cream in colour. Some circuits use a disc type with 2 legs, however not sure on your set. This is called the degausing circuit and demagnetises the tube every time you switch the TV on. Good luck, JUS004
do not put another fuse because there is a shorted in either the power supply circuit or the horizontal deflection circuit. in power supply try to check the rectifier, filter capacitor, or the regulator ic/transistor. in horizontal, try to check the horizontal driver/
output transistor or the flyback transformer. good luck! but if u dont know anything about this much better to bring it to a qualified service technician. good luck!
Jeff, If your not a technician please dont mess with the set as you can get seriuoly hurt by experimenting. And replacing a fuse that is black is only going to blow again and possibly cause more problems and damage the set more then it already is. Your problem is a shorted B+ rectifier or a capacitor or voltage regulator IC. If you don,t know what this is, or you don't know how to solder, as well as unsolder, Please seek out a pro to assit you with this repair. Good Luck