Inspired by Uncle Doug's recent video, I pulled out the chassis to my 1962 Brown deluxe. I have had this amp for ages but I rarely play it because it is noisy and too loud for the house. It stopped working a while ago so I have finally got around to trying to see what the problem is. One of the diode legs on the bias board has snapped, and now that I know what I'm looking at, I can see the death cap on the ground switch and the two core power cable both need 'modernising'. I've also done the NFB switch that Doug suggests in his vid. The filter caps in the dog house are some older blue Cornell Dubilier 40uF @ 450VDC. I pulled a couple to get a reading on my meter and they read 50uF and 52uF so are obviously changing in value. The datasheet on the GZ34 rectifier tube gives max C as 60uF so there isn't much more room to move. The schematic asks for 16/16/16/8uF, but from what I've read, these were on the low side because of the high cost of electrolytic caps back in the day. What would be good replacement values? suggestions of brands also would be welcome. The cathode bypass caps have also been replaced at some point with 33uF 35V caps. The schematic calls for 25uF 25v, so this is not correct but I wonder how much difference it will make? I was thinking to go up to 50v if I replace them. (Might as well do it all at the same time) The pencil notes on the top of the dog house say that the caps were last replaced in '01. Given the sparse use the amp has had, I think it best to replace all of the electrolytics? Thanks in advance, your knowledge and advice here always appreciated!