2220B restoration thread

[Jailtime]

Here's the nasty project 2220B I picked up a while ago. Notice the bend in the faceplate, that should be a fun one to get out. But this Marantz was free, so I figured it was worth a shot to restore it. And it works too, nothing wrong with the insides, except all that nice nicotine dust. If it cleans up nice, a recap will be in its future. So check back here soon for some more pics as the resto goes on. :thmbsp:

 

[Oerets]

I hate cleaning up a unit that a smoker owned .....
Give de-greaser a try , that will cut the tar and nicotine nicely I have found .



Good luck ....



Barney

 

[avionic]

Tar / nicotine is water soluable..

 

[Oerets]

A de-greaser something like this ....
Works wonders on the knobs and panel .


Barney

 

[Steelman]

Hey Jailtime,

I have used Windex for tar and nicotine and it works like a charm :thmbsp:

 

[catrafter]

Tom

 

[Jailtime]

She's all cleaned up now. :thmbsp: Took a few hours, but I think it turned out OK. I worked on the faceplate for about half an hour on that bend, it's better than it was. Adjusted the bias and DC offset, they're dead on now. I gave it some time on my EPI 100s, it's a nice sounding receiver. Has enough power to get some decent bass from the inefficient EPIs. I'll say it's worth the work to recap it. :yes:

 

[Steelman]

Are you sure that's the same receiver!!!!!

Really nice job

Vincent

 

[catrafter]

Looks great!

Tom

 

[mid-fi-ry]

Please keep this thread going thru your recap... I have a 2220b here in a wood case I was thinking of getting back into the rotation.

 

[Jailtime]

Yep, I'll give it a bump when I start the rebuild. And maybe work on that faceplate corner a bit more...

 

[audios]

Nice! Are you going to do the LED conversion when you do the recap?

 

[Sir.Byrd]

If you do a recap, could you post the cap list here?

Also, when you adjusted the bias, did you figure out the correct pins to measure from? The service manual was wrong.

 

[zr1gary]

What he asked....
thanks!

 

[Jailtime]

If you do a recap, could you post the cap list here?

Also, when you adjusted the bias, did you figure out the correct pins to measure from? The service manual was wrong.

Yep, I'll put up a .pdf or something of the cap list. And thanks to Catrafter, here's the right pins for adjusting bias. J714-J716 for one channel, adjust R733, and J715-717 for the other, adjust R734. R711 and 712 adjust DC offset, FYI. And I'll probably do the LED conversion when I recap, the plastic housing is just about toast in this 2220B. Maybe I'll build a cabinet too...

 

[Sir.Byrd]

Yep, I'll put up a .pdf or something of the cap list. And thanks to Catrafter, here's the right pins for adjusting bias. J714-J716 for one channel, adjust R733, and J715-717 for the other, adjust R734. R711 and 712 adjust DC offset, FYI. And I'll probably do the LED conversion when I recap, the plastic housing is just about toast in this 2220B. Maybe I'll build a cabinet too...

I'm doing LEDs too, buying non-assembled stuff from the LED dude here, can't remember his name...

 

[Jailtime]

Update: Here's the cap list I compiled by looking at the service manual and then comparing with the real parts in the 2220B as best I could. Got a little help from Catrafter, so it should be pretty good. Use at your own risk. Those Marantz manuals are a mess, this should get you really close on your cap order. But always verify the part you're replacing with the new one. :yes:

 

[Jailtime]

Woo Hoo! Ordered my caps, came to less than 30 bucks for 105C rated Panasonics! So if you're on the fence about recapping your Marantz, this should convince you to do it! :yes:

 

[Sharpstik]

Jt, a bulb is out in mine . Hard to get at? A spare anywhere?

 

[Jailtime]

Follow this link to find how to replace the lamp in your 2220B-http://www.audiokarma.org/forums/showthread.php?t=130906 It's for a 2235B, but they're the same lamp housing. Beware, the housing is very brittle. You can get the 8V, 200mA lamps from member dgwojo, or you can go LEDs from whsh93a here on AK.