Up for sale here is this complete recap kit for the Marantz 2230.  This contains new capacitors for all the boards, including the tuner boards, and includes replacements for the three main capacitors and a new capacitor clamp as well.  Each board's parts are in a separate bag for ease of installation.  Replacement transistors and diodes are included for the non-tuner boards.  If you need replacement output transistors, the correct replacements are MJ21196G, available here.  If you replace any outputs, you should replace both outputs on that channel.

Specifically, this kit includes:

3 main capacitors (Nichicon 6800 uf 80v and Epcos 3300 uf 100v)

1 new capacitor clamp (to replace the largest cap--you will need to reuse or provide your own nut/screw)

1 new capacitor for the tuning meter

P150 AM board/P500 FM board/P550 Muting Board:
21 capacitors

P300 MPX board:
17 capacitors (3 TDK/Wima film)

P400 Preamp board:
13 capacitors (6 TDK/Wima film)

8 transistors

P700 phono EQ board:
6 capacitors (2 Panasonic Film)

6 transistors

4 diodes

P750 amplifier boards:
12 capacitors (2 TDK film)

2 transistors

P800 Power Supply Board kit:

5 capacitors

4 diodes (2 zener)

1 transistor

Capacitors in this kit are Nichicon LS & Epcos (3 main caps), Nichicon PW, Nichicon KL, Panasonic FC, TDK film, Wima film, and Panasonic film capacitors, of the same uf (capacitance) except for 5, and the same or improved voltage ratings.  The filter capacitors go up in capacitance, which will improve the sound.  Transistors are the appropriate Onsemi subs for the original transistors.  The diodes are the appropriate subs for the originals and are made by Diodes Incorporated, Onsemi, or a similar company.  These are all extremely high-quality parts and are the same parts I use when I rebuild Marantz gear.  I have rebuilt many Marantz 2230s over the years.

I will include surprisingly well-written instructions, but this is a fairly complicated rebuild, and you should know what you're doing and have a decent soldering iron, a decent desoldering iron, and a dim-bulb tester.  

US shipping and handling is $10, and international is $36. If you have any questions, please ask.

Looking for more parts?  I have power switches, feet, pushbuttons, top 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 30 different values, a large variety of transistors for vintage 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.