Hello, A few months ago I retrieved my Luxman l-80v from storage. After connecting it up it started humming aggressively so I turned it off and let it rest for a bit. On the second attempt, the humming grew and the old 50v 10000uf Capacitors exploded. All 3 of the 0.3A 250v 6x30mm fuses were blown so I replaced them and the system turned on but no sound. So I ordered replacement capacitors and waited for them to arrive.
Capacitors arrived today so I wired them up replacing the grounding rod for a insulated copper wire. After wiring them up, on the first attempt I heard the relay click and to my suprise the amplifier worked and played for a few minutes until the 125v 5a fuse burst into a green spark and one of the new caps smelt a bit and looked as if it had expanded a bit but was still intact (however to note this capacitor was the only one that was hot out of the two). After this I replaced the 125v 5a with the only replacement I had on hand which according to online sources would be alright to replace with a 250v 5a fuse. After letting the amp rest I powered it on switched back to the original uninsulated grounding rod and sounded like it was shorting so I immediately turned it off on the second attempt I replaced the capacitors grounding rod with a copper wire as on the first attempt ( I dont believe this impacted anything) however once again this time the new capacitiors blew again releasing an awful smell. Hopefully someone can help get this amp back into order!
Also to add, I did notice the relay is now a slightly cloudy but im not sure if this was due to the blown fuse or the blowing of the capacitor as already like this previously as I heard it clicking in the beginning. I have slso tested all output transistors for continuity and none of them beeped so i believe them to be functioning. I have also tested some of the smaller power supply capacitors that are also slightly loose from the circuit board however they are rated 50v 100uf but the in circuit capacitance is between 44 and 55uf
Any help would be much appreciated
Many Thanks
Capacitors arrived today so I wired them up replacing the grounding rod for a insulated copper wire. After wiring them up, on the first attempt I heard the relay click and to my suprise the amplifier worked and played for a few minutes until the 125v 5a fuse burst into a green spark and one of the new caps smelt a bit and looked as if it had expanded a bit but was still intact (however to note this capacitor was the only one that was hot out of the two). After this I replaced the 125v 5a with the only replacement I had on hand which according to online sources would be alright to replace with a 250v 5a fuse. After letting the amp rest I powered it on switched back to the original uninsulated grounding rod and sounded like it was shorting so I immediately turned it off on the second attempt I replaced the capacitors grounding rod with a copper wire as on the first attempt ( I dont believe this impacted anything) however once again this time the new capacitiors blew again releasing an awful smell. Hopefully someone can help get this amp back into order!
Also to add, I did notice the relay is now a slightly cloudy but im not sure if this was due to the blown fuse or the blowing of the capacitor as already like this previously as I heard it clicking in the beginning. I have slso tested all output transistors for continuity and none of them beeped so i believe them to be functioning. I have also tested some of the smaller power supply capacitors that are also slightly loose from the circuit board however they are rated 50v 100uf but the in circuit capacitance is between 44 and 55uf
Any help would be much appreciated
Many Thanks