I have a parasound dr 25 receiver with a fuse blowing problem. No smoke was releasedso I don't think much is wrong. There is a shorted/leaky 1500 mf@35v cap but a new one does not help.I need a schematic to help examine the power supply section. Any help would be appreciated. Thanks very much.
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Fuses only blow if there is an overload somewhere. The most likely cause being a transitor that has shorted out. Easy to spot with a multi-meter on the ohms setting. As it will be liked you have touched the test leads together!
hi, there is no fuse on amplifier output only power supply, the problem is some parts of electronic that drives into audio output of the amplifier maybe are shorted like transistors, diode or amplifier Ic's. bring it to a nearest service center to check it. or if you have a knowledge in technical yo can used multi tester to check it. Note: unplugged it first before you open the cover to check it. thanks
When a fuse blows out thats an indication that theres a short in the set and the fuse is installed there to prevent a fire fom happening in the set. unless you know the HI Voltage safty issues with a tv set there are no user serviceable parts inside these sets and these tvs should only be worked on by trained service personel! The problem that occouring here could be a shorted or leaky bridge rectifier, a shorted and or a bad horizontal output transistor as well as the flyback transistor and the trsnsformer, or a bad componet in the power supply.. Good Luck