I have a Technics SA-DX950 that's probably at least 15 years old but worked great until recently when it just started doing the same thing. Now it works for a while with the sub off but then says "Overload" and shuts off. I reset and it even says to "leave off to cool down". I'm hoping your fix will work.
This series of amps use class 'A' operation and will always get hot no matter what you do to cool them down this is also the reason they are marked MOS Class AA.
I have a sa-gx650 when i turn the volume up, close to 6, it shoots the overload error, but the fan is working fine, it does this even with the speakers unplugged, can you help me?
the voltage of the fan is 5 volts. the sa-gx550, sa-gx650 has an error sensing system that whenever the fan driver's circuit is malfunction it disconnects the speaker connection through its relay to protect the Integrated Circuit (IC) from overheating. disable the error sensing, remove the 5 transistor's (Q651-Q655) from the fan's driver circuit, the sound will not cut-off (google a service manual of sa-gx650, sa-gx550 for reference). have a separate power supply of 5 volts and connect it to the fan or you may add another fan on top of the heatsink to protect the IC from overheating.
@@SuperJonesVideo the voltage of the fan is 5 volts. the sa-gx550, sa-gx650 has an error sensing system that whenever the fan driver's circuit is malfunction it disconnects the speaker connection through its relay to protect the Integrated Circuit (IC) from overheating. disable the error sensing, remove the 5 transistor's (Q651-Q655) from the fan's driver circuit, the sound will not cut-off (google a service manual of sa-gx650, sa-gx550 for reference). have a separate power supply of 5 volts and connect it to the fan or you may add another fan on top of the heatsink to protect the IC from overheating.
tengo un sa-gx550 y al subir el volumen se apaga la musica y marca overload.... como lo arreglo... el ventilador (cooler) directamente no anda... Cual seria el voltaje del cooler? no lo encuentro. Puedo reemplazarlo con cualquiera?
el voltaje del ventilador es de 5 voltios. el sa-gx550 tiene un sistema de detección de errores que cuando el circuito del controlador del ventilador no funciona correctamente, desconecta la conexión del altavoz a través de su relé para proteger el circuito integrado (IC) del sobrecalentamiento. deshabilite la detección de errores, retire los 5 transistores (Q651-Q655) del circuito del controlador del ventilador, el sonido no se cortará (busque en Google un manual de servicio de sa-gx550 como referencia). tenga una fuente de alimentación separada de 5 voltios y conéctela al ventilador. puede agregar otro ventilador en la parte superior del disipador de calor para proteger el IC del sobrecalentamiento
I have a technics sa dx 930 When I turn it on it goes straight to overload. Without have any speaker connected. Fuses are good. What type of fan does it have. Is it a 12 volt dc brush or brushless fan.
![[LIVE] : ONE ลุมพินี 87 วันนี้!! คู่เอก "ก้องชัย vs โชคปรีชา"](http://i.ytimg.com/vi/YN6e7HVnekw/mqdefault.jpg)
I have a Technics SA-DX950 that's probably at least 15 years old but worked great until recently when it just started doing the same thing. Now it works for a while with the sub off but then says "Overload" and shuts off. I reset and it even says to "leave off to cool down". I'm hoping your fix will work.
The 4 transistors either end of the massive heat sink always go dry joint and they then can bring up OVERLOAD!
in some panasonic compos they show the "F61" error means no fan detected or faulty blower fan. anyway. nice vid. 👍
This series of amps use class 'A' operation and will always get hot no matter what you do to cool them down this is also the reason they are marked MOS Class AA.
ya the older ones this model is h+ no markings class AA or mos on the amps
I have a sa-gx650 when i turn the volume up, close to 6, it shoots the overload error, but the fan is working fine, it does this even with the speakers unplugged, can you help me?
ME too, looking for this solution
the voltage of the fan is 5 volts. the sa-gx550, sa-gx650 has an error sensing system that whenever the fan driver's circuit is malfunction it disconnects the speaker connection through its relay to protect the Integrated Circuit (IC) from overheating. disable the error sensing, remove the 5 transistor's (Q651-Q655) from the fan's driver circuit, the sound will not cut-off (google a service manual of sa-gx650, sa-gx550 for reference). have a separate power supply of 5 volts and connect it to the fan or you may add another fan on top of the heatsink to protect the IC from overheating.
@@SuperJonesVideo the voltage of the fan is 5 volts. the sa-gx550, sa-gx650 has an error sensing system that whenever the fan driver's circuit is malfunction it disconnects the speaker connection through its relay to protect the Integrated Circuit (IC) from overheating. disable the error sensing, remove the 5 transistor's (Q651-Q655) from the fan's driver circuit, the sound will not cut-off (google a service manual of sa-gx650, sa-gx550 for reference). have a separate power supply of 5 volts and connect it to the fan or you may add another fan on top of the heatsink to protect the IC from overheating.
tengo un sa-gx550 y al subir el volumen se apaga la musica y marca overload.... como lo arreglo... el ventilador (cooler) directamente no anda... Cual seria el voltaje del cooler? no lo encuentro.
Puedo reemplazarlo con cualquiera?
tengo un cooler para cambiar pero el diametro es un poco mas grande. Eso puede producir algun problema?
buenas, avisame si tuviste suerte, me interesa a mi tambíen saber eso. entiendo que por lo que dice en el video el cooler es de 12v. Saludos
el voltaje del ventilador es de 5 voltios. el sa-gx550 tiene un sistema de detección de errores que cuando el circuito del controlador del ventilador no funciona correctamente, desconecta la conexión del altavoz a través de su relé para proteger el circuito integrado (IC) del sobrecalentamiento. deshabilite la detección de errores, retire los 5 transistores (Q651-Q655) del circuito del controlador del ventilador, el sonido no se cortará (busque en Google un manual de servicio de sa-gx550 como referencia). tenga una fuente de alimentación separada de 5 voltios y conéctela al ventilador. puede agregar otro ventilador en la parte superior del disipador de calor para proteger el IC del sobrecalentamiento
Do you know a good website or company to buy parts for technic receivers? Thanks man.
this is stupid because who in the world would put a protection. over a fan
Technics did. All technics amplifier have this bad idea.
@@electronicguest Technics amps are fine they have reasons for doing this.
I have a technics sa dx 930
When I turn it on it goes straight to overload. Without have any speaker connected. Fuses are good.
What type of fan does it have. Is it a 12 volt dc brush or brushless fan.