Hello friends, I have a memorex TV that blows the fuse of the current input I change it and I burn it at once as if I had something short and I also saw that I had an inflated electrolytic capacitor .. I need help?

hello buddy: if you blow the fuse first of how many amps is the fuse q, put ... has q, be 4amp ... if it burns it also highlights a leg of the R601 of 2.7ohm x5w q, goes the filter of line C607 in the primary of the source ... and see if the short disappears ... but to work on these types of faults you have to connect a 150-200w flint lamp between the power grid line and the tv. ..this is to avoid burning more fuses ... you can connect it in the place of the fuse ... also remove the ptc TH601 from the circuit ... or unplug the L601 q, go to the coil q, is arranged around the the bell of the tube ... can be short ... if it is not prob, the ptc can have the rectifier bridge D601 short ... if so, change the rectifier bridge ... comment results ... greetings <! !

Good evening: The fuse "flies" because surely there is a short at the source. It can be the bridge rectifier, the IC / STR / Transistor, or whatever the switching component is in the source. Another component may be the PTC, those with three or two legs; You have to remove this component, a simple test is to make it "sound" like a rattle - rattle, if noise is heard, the PTC is in poor condition, if no noise is heard, this does not mean anything, from this step now You have to measure the PTC. Whenever you encounter a "blown" fuse there is a cause, therefore you cannot replace it just like that, without first checking the source well. The PTC has nothing to do with the source, but being associated with the fuse, and this being in poor condition, what it does is literally do (sometimes) is to blow the fuse. Again, whenever the fuse is in this state, the best thing to do is to use a method (whatever) that avoids or dampens a short that we have not been able to find. I use the lamp system in series, unfortunately it is this time that is no longer possible for colleagues who start, because as is known, incandescent lamps stopped being used. That's why it has to be done with other tools, I don't know them.