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Re: Keeps blowing fuses
When a fuse keeps blowing, that is an indication that some component has failed and the circuit is drawing too much current. Most likely it is a problem in the power supply section or high voltage / flyback section.
Sorry to say, you will need to take it to be serviced.
Please let me know if I can be of further assistance to you.
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It sounds that there is some short circuit with its main power supply regulator circuit. A detailed check is necessary to locate the exact faulty component/s. If you are sound in electronics, you can do it by yourself. If not, contact any service technician. If
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Hello The power supply section of your TV should be troubleshooted. Open the set, and check the fuse. There is a protection fuse fitted on the power supply section, a glass cartridge type, which can be detached from its holder. Check it for damage. You can check it with the help of a multimeter. if found opend, never put an other fuse in place. Check for the reason for present fuse to blow up. There will be some reason, without any reason, a protection fuse won't blow up. If you replace the fuse with an other one, without detecting and rectifying the reason for the blow up of fuse, it may make things more worse than preset. Usually, power switching section will have the trouble. You must have sound knoledge in electronics to follow the work. If you have knowledge and all tools to repair, inform me by Fixya comment box. I'm ready to assist you to repair this set. OK.
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 precautionof handling it, there some stored
electricity enough tohurtyou with a little mistake only.
It likely blew a fuse. However, TVs rarely blow a fuse for no reason. I recommend getting it fixed. You can try a new fuse of the same size, but if it blows, please get it repaired. DO NOT put a larger fuse in - fire hazard. The fuse maybe solder in.
NEVER take the back off a CRT or Plasma TV unless you are a certified technician. There are LETHAL voltages present inside the case which can persist for WEEKS after the set is unplugge
It does not sound like "too many appliances" on a plug, although low voltage can cause higher currents and shorten the life of a device.
That popping sound was your power supply failing. This is not something you can replace yourself.
Few televisions have replaceable fuses. They depend on electronic regulation to protect circuits from overvoltages. CRT televisions use large capacitors that loose their filtering ability with age and case errors beyond the range of the protection circuit.
It must be repaired by a technician.
it out. If the fuses are blown, you may have lost a diode/bridge in the rectifier circuit.
fuses don't just up and blow for no reason.
buzz it out before buying any new fuses.
then try this methed
Check the fuse box or the outlet you are using for power. Easiest way
to do that is to plug in a lamp into the same socket the rcvr is
plugged into. If no power; reset the house breaker.
Check the power line into the set. Wiggle the cable near the two
ends. They rarely go bad in the middle, but the molded ends are always
: Check for a bad fuse (most modern rcvrs do not use fuses because
they have perfected the power protection and management systems to the
point that a fuse is redundant. Nonetheless, some manufacturers still
use a fuse)
Check the power switch. It can go bad and just won't close the
connection so that the set gets power! How to check? Unplug the set
totally. Remove the cover. Find the switch. Go to Radio Shack and
purchase a small clip lead. Clip the lead across the switch contacts
very carefully so as not to short out any other circuits. Then
carefully plug the line cord in to see if you now get action.
If the set has an internal power problem, you should still be
getting some indication on the front panel (unless the lamp in the
standby hole is defective or burnt out).
: If you are certain the set is getting power internally and
still totally dead, it is most likely the output transistors in the
power stage (mounted to the heatsinks) are all dead. They will need
If you disconnect the degaussing coil and the set plays fine, it means one of 2 things is wrong. The degaussing thermistor could be shorted internally. I have seen this happen a few times on those degaussing thermistors that are in the little black boxes with 3 legs. Those boxes actually have 2 thermistors in them, one to do the actual degaussing and another connected directly across the AC to act as a heater for the degaussing thermistor. One of those thermistors could have "flashed over", which would blow the fuse the instant the set it turned on. The only other thing would be the wrong size main fuse. Without a degaussing coil the set probably draws about one amp, but the surge at turn-on with a degaussing coil could be as high as 4 amps. If you have the correct fuse installed and it blows at turn-on, replace the degaussing thermistor.
I hope is only a fuse and it will not be hard to find it should be close to where the power cord goes in and it has to be replaced with the same amps and size.Make sure the set is not plug in whe you remove the lower back and once you replace it put the back cover on and plug it in,if more damage is present it will blow up again right away or it will blow up when you push the power button,I hope it doesn't but if it does you will need someone qualified to check the rest.Be careful