In extreme cases, the old capacitors can lead to failure and extensive damage. A good idea is to replace all the electrolytic capacitors with new ones.
I chose them in terms of capacity and rated voltage. All set includes good quality new electrolytic capacitors from brands such as: Nichicon, ELNA, Rubycon, of various series. They're all manufactured with audio equipment in mind.
They also have a low ESR. You can also get the factory service manual to the LUXMAN M-4000 as an addition.I will send it in PDF format. KIT includes 55 electrolytic capacitors. Power capacitors are not included. 4x15000uF 80V are not included. I DON'T SELL THE AMPLIFIER FROM THE PICTURE, ONLY A SET OF CAPACITORS NEEDED FOR ITS SERVICE.
Check my other offers if you need capacitors for your other amplifier. Maybe you will find what interests you. I will successively add sets to other devices. Write me a message, if you haven't found the right one.
I will try to complete a set for you.