Up for sale here is this complete rebuild kit for the McIntosh MA-6100 amplifier.  This contains new capacitors for the 5 plug-in circuit boards, replacements for a number of transistors, a new 220 uf 100v axial capacitor for underneath, individual capacitors to replace the multi-section can capacitor, and replacements for the two screw-terminal main capacitors.  If you want a more basic (and much cheaper) kit, I have that available here.

This kit includes 28 capacitors--2 Nichicon main caps, 3 axial Illinois Capacitors, 2 bi-polar Nichicon Muse, 2 Wima film, and 21 Panasonic FC and Nichicon PW.  The axial Illinois Capacitors are for the axial caps on the driver boards and the one on the underside--the other 4 smaller axial capacitors are replaced with Nichicon PW radial capacitors.  The multi-section can capacitor is replaced with four individual electrolytic caps.  The two main filter capacitors are upgraded to the new Nichicon 10000 uf 100v screw-terminal caps, which are drop-in replacements for the old ones.  You may need to reuse the screws from the old main caps.

These are all high-quality brand new genuine parts.  The capacitors are all at the same capacitance (uf) ratings and the same or improved voltage ratings, except the two filter caps, which go up a bit in capacitance.  These are extremely high-quality parts, the same ones I use when I rebuild McIntosh gear.  The main filter caps are taller than the old ones, but will fit just fine.

I will include surprisingly well-written instructions, but rebuilding these boards is at least mildly complicated, and you should know what you're doing and have a decent soldering iron.  This is fairly delicate work, so if you're not an experienced solderer this may not be a good idea.  A lot of McIntosh MA-6100s have hum or buzz due to grounding issues, which this kit will not solve.  Still, it will definitely help it run better, and should improve the sound.  Please see my pictures for details.

If you would like to replace the front panel lights, I have a light kit here.

US shipping and handling is $15, and international is $28.  If you have any questions, please ask.
 
Looking for more parts?  I have power switches, feet, pushbuttonstop case screws, bottom screws, faceplate screws, white LED fuse lamps, blue LED fuse lamps, 6.3v bi-pin bulbs, 8v bi-pin bulbs, 12v bi-pin bulbs, wired 8v 60ma bulbs, new power cords, new main capacitors for the Marantz 1060/2230, wired Pioneer speaker plug replacements, new 630v yellow film capacitors at 38 different values, new 1200v yellow film capacitors at 15 values, a large variety of transistors for vintage stereo repair, new Wima film capacitors for stereo repair, new 250v yellow film crossover capacitors, and more.  Just use "add to cart" on everything you want and then check out for combined shipping.