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Re: RCA big screen tv
Whenever fuse blows every time it is the indication of short circuit in tv.
so please do not put fuse unless you know the cause of blowing fuse.
these are the reasons of blowing fuse.
1 main filter cap.short.
2 rectifier diode short.
3 swithing transistor short
4 horizontal output transistor short
5 caps & diodes connected to flyback transformer short.
6 print short.
7 at last if every thing ok then flyback transformer defective.
hope this will help.
if you are not a tech person call skilled tech to fix it.
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Some RCA models had problems with there degauss circuits drawing to much current at turn on. You can change the fuse to see if it will work for a while. If it immediately blows the fuse at turn on or at plug in, there is a hard short somewhere. If it works for a while and blows the fuse again, take it to a repair shop and have them modify the degauss circuit. An up to date shop will know what to do. Should not be expensive.
Try unplugging it for about 30-60 seconds, then plug it back in and before you turn it on, make sure there is a good video source going to the TV either from Satellite/Cable or a DVD player or something.
If this doesn't work, try unplugging it a bit longer and then plug it back in and try again. If it still does not work, you may have to take it in and get it serviced.
Usually when devices power themselves off like that, there's something wrong...
is the unit competly dead? no flashing lights.first unplug the set for 30 min then plug back up and try again if there is no lights then i suspect main fuse has blown. however this does not mean replaceing will fix. something has shorted to cause fuse to blow if there is flashing then the computer in the set has seen something wrong and shut down.
oh noh!!! I suggest you should an AVR (automatic voltage regulator), these will help to control the flactuations of power. try also check the power supply (its either 110 or 220 volts), just make sure it is compatible to your default power supply.
sounds like something in the regulator circuits blowing the fuse. I can post alink where you can get a service manual as well as free support to help you figure it out. Your set is coverd in the DPTV305 series phillips magnavox on page 2 of the phillips section for 10.99 and they email them instantly if you want one. http://servicemanuals.vstore.ca/
It needs a new FLY BACK transformer. That is what you are looking at. The origionals are not made for the set any longer but insist on having a generic on installed by a local TV shop. I just put one into a RCA 31" and it works nice. Don't throw away the TV. Get it fixed. MAKE SURE YOU INSIST THEY USE THE GENERIC ONE! THEY DO WORK!
The fuse is inside the set and is probably ok, but check to be sure. If you have an ohm meter I would check the horizontal output transistor first. It is a big transistor on a heat sink next to the FBT. It has three pins, check the center pin to one of the others, if low the transistor and probably the FBT is bad.