http://audio.manualsonline.com/manuals/mfg/pioneer/vsx819hk.html
It's in the manual. Page 12.
Resetting the Main Unit
Use this procedure to reset all the receiver's settings to the factory default. Use the front panel controls to do this.
1 Switch the receiver into standby.
2 While holding down the BAND button, press and hold the STANDBY/ON button for about two seconds.
3 When you see RESET? appear in the display, press AUTO SURROUND/STREAM DIRECT.
OK? shows in the display.
4 Press STEREO/A.L.C to confirm.
OK appears in the display to indicate that the receiver has been reset to the factory settings.
There might be a fuse either in the rear panel or inside the case that might be worth checking. Manuals can be downloaded from the link below, though the best advice I can offer is entrust the diagnosis and fault to a professional.
https://www.hifiengine.com/manual_library/pioneer/sx-251r.shtml
I sounds like you may have a problem in either one of the Regulator circuits, or, one of the Power Amplifier outputs. If the protect circuit detects DC or Low Impedance on one or more of the speaker lines, it will not fire up the high power section of the power supply. Further troubleshooting will require some working knowledge of power amp and power supply circuits. I've got a .pdf copy of the Service Manual if that will help you.
Please let me know what your level of troubleshooting ability is, and whether the manual will help you.
-Petra
It would go into protection mode to stop damaging other components...... until the fault is rectified it will not stop going into protection mode!
Usually this is caused by a short in the wiring, get this tested!
The shaft on the motor is not lined up with the turntable or gear. Adjust the motor (if possible) so it’s properly aligned. Also, clean motor shaft with rubbing alcohol.
Could be a dry soldered joint - not unusual in complex electronics but randomly heating lots of joints can cause trouble so it is best to discover the fault first, if possible.
Obtain a service manual and trace the power path with a suitable multimeter.
You could have a bad speaker or wire! If it powers up ok try hooking one speaker at a time and when it shuts down you will know what speaker/channel is causing the problem.
There are a few methods manufacturers use to automatically change the direction of play - sometimes a tight cassette will fool the mechanism into thinking the tape has ended and sometimes it is a matter of the internal control linkages being in such close proximity a slight misalignment can cause the pressing of one button to move another...
Probably not - Bluetooth is listed as a capability but I think if you read the manual, it will be an alternative source or input rather than an output.
Hi Ravindran K, the first thing to determine if it is a problem generated by defective components inside the equipment or outside
To determine this, I suggest you unplug the Pioneer and disconnect all the speakers, then reconnect it to the power outlet and turn it on.
If the fault continues, it is very possible that the power supply and the output stage are bad, in this case consult a specialized technical service
If you do not fail, it may be that some or some cables or speakers that may be defective
To verify this, look at the cables, which are in good condition and with the connection ends with the wires properly threaded
Then go connecting the speakers one by one and test the operation
Take the test and comment
Greetings Franco Dosil
Hola Ravindran K, lo primero que hay que determinar si es un problema generado por componentes defectuosos dentro del equipo o de afuera
Para determinar esto, te sugiero, desenchufa el Pioneer y desconecta todos los parlantes, luego vuelve a conectarlo al toma corrientes y enciendelo
Si continua la falla, es muy posible que la fuente de alimentaci?n y o la etapa de salida se encuentren mal, en este caso consulta un servicio t?cnico especializado
Si no hace la falla, puede ser que alg?n o algunos cables o parlantes que puedan estar defectuosos
Para verificar esto, observa los cables, que se encuentren en buen estado y con los extremos de conexi?n con los alambres correctamente enroscados
Luego ve conectando de a uno los parlantes y prueba el funcionamiento
Haz la prueba y comenta
Saludos Franco Dosil
https://www.manualslib.com/manual/837432/Pioneer-Vsx-D710s.html
