Buying second hand Amplifier - Marantz PM63

I bought this amp recently.As it's second hand,the listening test was a must, and I was lucky to hear it on pro JBL 4428 studio monitors.

Below is cleaning and repairing process.Due to old age of this amp, some contacts had to be cleaned. I've also noticed that sound was dissapearing sometimes because wires inside were loose so I had to solder them back again.

Remote control is curently not working,but I don't mind as I got it under priced because of that.
I am curently looking for solution for this, it's not easy to find this type of IR sensor.I went to Sim Lim towers to search for it but no luck.
This amp has plenty of reserve power, sounds clean and neutral.I love source direct option which bypass equalizers.