PIONEER SX 770 has return to the bench with right channel is out!!!

This pioneer was just serviced but return after running nicely for a week, no sound on the right channel...what could of happen?? let's see if I can find what the issue is and is it repairable...

[@bland_lover]

Omg, that brings back memories. My father bought an SX770 brand new from a shop in London in the early 1970s. He also bought a Garrard SP25Mk3 deck and Wharfedale Triton 3 speakers. I've still got the speakers but the rest have long gone. Thanks for a great video.

[@martinkoskella3943]

Very sharp and intuitive diagnostic, well done Joe!

[@timcorner2821]

Nice....Glad to hear is was not a bigger problem.

[@ahmadalawadhi538]

As you say 40 years old any think can be happens. Good nice jop nice receiver ❤

[@johnsampson1096]

Maybe a shorted speaker cable caused the blown fuse? As you mentioned, Joe these pieces are 40 plus years old, any problem can develop, especially if stored away for a number of years..........

[@VintageAudioFever]

I am thinking like you...something happen that shorted that fuse on the right channel and speaker was what I had in mind without my pal Tim noticing it that cause that fuse to blow yeah!! I know it's nothing to do with the receiver. I guess we'll never know haha!!!
but possibly a weak OLD fuse ?

[@rusoaie]

"30-40" years old. Haha, it's 54 years old! 😂 enjoying your videos, btw. Keep it up!

[@VintageAudioFever]

ah!! so true!!!...if I put this unit at 50 yrs old, that makes me old also...haha!!

[@alexzildjian]

Tu NUEVO SUSCRIPTOR 😀🎵📹😉 HI from Ensenada baja MEXICO 🇲🇽🇲🇽😊

[@VintageAudioFever]

thank you!!

[@Trucam2020]

Thanks Joe🎉

[@VintageAudioFever]

welcome buddy!!

[@bobdoritique7347]

Merci.

[@shield-maiden]

fuses can over time be week and sundenly "blow" nice video 🙂

[@VintageAudioFever]

Very true!

[@paulborodea4957]

These old Pioneer have problems with bias trimmers (50ohms). My SX-770 is one of them.

[@brunoprimas1483]

💯

[@Ezzell_]

Thanks for another great video.... by the way, are those PicQuic bits you are using?

[@VintageAudioFever]

yes they are....I know they are not the best!!!

[@Ezzell_]

@@VintageAudioFever Good enough for low-mid torque.

[@LeafyGooner]

Could the fuse have been damaged when the unit was in transit?

[@VintageAudioFever]

that is very possible...