Description: Up for sale here is this P750 amplifier board rebuild & repair kit for a Marantz 2270. This is all the parts you need to rebuild ONE Marantz 2270 amplifier board. There are TWO amplifier boards in a 2270, so if you need to rebuild both amp boards, set the quantity to 2 when you buy. Over time the amp boards start developing issues with diodes, transistors, and capacitors, and sometimes completely blow up. The old parts are weak and failing. We will make them new again! This is a complete kit--it includes all 4 capacitors (replacements for all the electrolytic & tantalum capacitors, plus a 1 uf film cap for C751), 5 diodes (replacements for all the diodes, at H761-H765), and 12 transistors (replacements for all the transistors on the board, plus the bias transistor). It also includes heat-shrink tubing, a mica washer for installing the bias transistor, and wire to splice onto the bias transistor legs. It does NOT include any resistors, the big white resistors, or any output transistors. I have new OnSemi MJ21195G/MJ21196G outputs listed here if you need them. Each amp board uses 2 (1 pair), and you should replace both on the channel if you are replacing any. Please don't buy any of the fake Chinese transistors on eBay--those are counterfeit and can blow up. This kit will completely rebuild one P750 board, so it's intended to repair boards that have been blown up or are otherwise non-working. If your P750 board is working fine and you just want to refresh it, I have a more abbreviated kit here. These are all high-quality brand new genuine parts. The capacitors are Nichicon KT and Panasonic film caps at the correct uf and the same or higher voltage ratings, and the transistors and diodes are Fairchild/Onsemi and Central Semiconductor and are the correct subs for the original transistors/diodes. These are extremely high-quality parts, and they are what I use when I rebuild Marantz gear. Frankly, "recapping" is a waste of time if you're not going to replace the transistors as well. A lot of times the transistors age worse than the caps, so you should definitely change out the transistors while you're in there. If you're having amp board issues, it's very likely to be a transistor issue. I will include an extremely specific instruction sheet designed to walk you through this, but this is a pretty complicated repair, so if you don't have much experience with this, buy the kit and take it to a professional. You should definitely have a fair amount of soldering experience and have a decent soldering iron, a dim-bulb tester, and heat-sink compound, as well as the usual tools. This kit may not fix your Marantz if it has other issues, but it will definitely help it run better, and should fix most amp board problems. Please see my pictures for details. US shipping and handling is $5, and international is $18, no matter what quantity you buy. All my small parts are set up for combined shipping, so just use the "add to cart" feature and then check out all at once, and it will combine shipping. 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 main capacitors for the Marantz 1060/2230, wired Pioneer speaker plug replacements, and more. Just use "add to cart" on everything you want and then check out for combined shipping.
Price: 20 USD
Location: Milwaukee, Wisconsin
End Time: 2023-10-21T12:58:46.000Z
Shipping Cost: 5 USD
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Item Specifics
Restocking Fee: No
Return shipping will be paid by: Buyer
All returns accepted: Returns Accepted
Item must be returned within: 30 Days
Refund will be given as: Money Back
Return policy details:
Brand: Marantz
