Panasonic SA-he75, displays an F70 error. - Panasonic SA-HE75 Receiver

Help in the link

https://www.google.com/search?q=technics+sa-dx750+f70+error

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The fuse is a part of the problem it is for safety measures
the problem is in between the power supply regulators, capacitors and power amplifier circuit board.
usually a regulator or an output transistor can cause this error.
hope this helps.

http://service.us.panasonic.com/OPERMANPDF/SAHE75.PDF

a error F70 in my panasonic sa-he7

rafatecnico amigo mio el error esta en la placa de coneccion de dispositivos auxiliares por favor revisa soldaduras de los dos transistores de potencia que se encuentran juntos y de los dos transistores de acople de los de potencia, si se encuentran bien entonces alguno de ellos esta averiado en cortocircuito o abierto

the difference is the "same speaker connections"
the front and rear will connect the same but the subwoofer is amplified by the HT75 , and the HE75 does not have an internal amp for the subwoofer speaker , only a "pre output"(has to be amplified)

Look up "Panasonic F70 error" on Google and you will find plenty of discussion about this problem.

The F70 is a blown fuse error. It looks like you can can the fuse yourself, if so inclined, otherwise send it to a service agent.

According to the operating instructions, you must take it to a repair facility. There are no troubleshooting suggestions for this problem in the manual.

F70 interrmintent problem caused by (Ic-current) interupted, supply for cpu, Q1702 (emitter point) high resistant to IC1701, suggestion- connect a wire between these component due to pcb track poor contact.