Faulty transistor c 4834

What brand/model of receiver are we talking about?

you need to check the power supply input of your amplifier using a multimeter set your tester into a dc voltage reading.then measure the power input you must have a DC voltage supply reading..open the cover check the fuse an open fuse will turn the unit to no power.there are causes of blown fuse a shorted power transistor at the circuit will blown the fuse you need to replace faulty transistors before putting up a new fuse...check also the diode at the power supply section ,faulty diode could lead to the same problem..

the tv have a fault in the power supply circuit or horizontal circuit check the regulator transistor or ic in your power supply and other components there.check the horizontal output transistor in the horizontal circuit and other components around replace what ever component you find faulty and components associated with the faulty component.good luck.

It may be of faulty Transistor. Here in your case the switching is not happening. Try to replace the transistor and power IC in the SMPS section. Check the transistor pin voltage to find out whether it is faulty. The Capacitor got bulged because of over voltage. The faulty component will be near by the bulged capacitor.

Good Day sir, the reason why your tv act that way is the switching power supply. The power supply regulator, cannot supply the current needed by your TV. these can be caused by several factors. a faulty switching regulator, low power, or filter capacitor leaking, check the voltage across the VCC after the regulator, if possible the switching transistor. and the ic that controls the pulse they are usually near each other. for safety reasons, better consult your service personnel. hope this helps. if you need more assistance, do let me know. thanks

In case of a transistor which is faulty, could short the power supply in circuitry, and this happens after the transistor gets heated up. So you might wanna inspect the transistors on board to replace if found faulty.

--Sandy

The battery charger inside the UPS is faulty so check the transistors including the rectifier on the heat sink. Replace the faulty ones and your UPS will be good. I strongly suggest that you check all the transistors on the PC board just to make sure that the whole board is ok after replacing the transistors

the power supply is faulty, check the following for lekages
power transistor
rectifier diodes
fusable resistors
also griver transistors

purchase new transistor of original company duplicate transistor may heat and burn solder the capacitor of same value solder fuse and better to work on series lamp protect from burning if transistor burn again then check zener and replace if faulty

Have you tried a 2sd6041? sometimes japanese trannys use this prefix.