My Marantz 2230 Rebuild Thread

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I helped my son install a subwoofer into his Miata on my only day off this weekend. I'll see if I can make progress during the week.

 

[Shaggykjb]

watching this, best of luck to you!

 

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This unit is pristine! I don't think it has ever been opened since it left the factory.

 

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Not much lead to work with.

 

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So I'll need some resistors...

R021 & R022
Marantz part#RC 1002212
Solid (?) Resistor
2.2ohm +/- 10% 1/2W

Ok Google, what's a solid resistor?

Will metal films work, or since these are in the speaker coupling circuit, would metal film be too susceptible to frequency problems?

Edit: I picked up some 1 watt 1% tolerance 2.2 ohm resistors from Fry's Electronics. I chose to do this, rather than mess around with the short leads on the resistors. This was due to the unique way my 2230 was assembled, not because of missing components in the kit; it is complete. 89¢ for the resistors + no wait = no brainier, plus I needed a couple of capacitors for a tube guitar amp I am fixing.

 

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Maybe not the best, but not the worst, either!

 

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Well, the coupling and power supply capacitors are in and the 2230 passed the dim bulb test for the work so far. I had hoped to get further, but putting these in was a real pita! I'm an industrial electrician, where we believe in leaving slack in the conductors. Not so with audio gear!

 

[patfont]

I include ring terminals pre-soldered to the large caps, in my kits. That way the fit is not as tight and you have something to easily solder the wires to.

 

[tensleep]

I include ring terminals pre-soldered to the large caps, in my kits. That way the fit is not as tight and you have something to easily solder the wires to.

That's a very nice and most welcome touch!

 

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Now for the power supply board, P800.

 

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1 board down, 77 components to go...and another DBT passed.

 

[rBuckner]

Nice work! I like the choice on the main filter cap and audio coupling caps for sure.

 

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Nice work! I like the choice on the main filter cap and audio coupling caps for sure.

Me too! Apparently, my kit is the first to include these, thank you very much Randy!

 

[Steven Tate]

Nice work! You are on your way.

 

[patfont]

Now that the P/S board is finished you can set/check the voltage.

 

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Now that the P/S board is finished you can set/check the voltage.

Oho! I get to try out my new oscilloscope!!

 

[patfont]

Just need a digital multimeter with mini grabbers to set the voltage to 35.6V see the service manual.