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Old 31st July 2007, 07:07 PM   #1
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Default Yamaha Receiver Mods

I have an older receiver model RX-V2700. After searching on the internet could not find many (if any) people modding Yamaha receivers. Would appreciate response from anyone that has done one. Also would really appreciate schematic if someone has one.
Best Bang for Buck only please and thank you.
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Old 1st August 2007, 08:00 AM   #2
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Default Yamaha RX-V2700

Hi,

I can mail you the servicemanual.

Your email-adress ??
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Old 5th August 2007, 09:57 AM   #3
weaponx is offline weaponx  United States
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I have an HTR-6030. Can I mod it or run more power between it and the speakers???
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Old 10th August 2007, 06:12 AM   #4
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I presently own the Yamaha RX-V1600 and definitley considering some mods like replacing opamps with National LM4562NAs and critcal capacitors with Black Gate N series nonpolar in Super E configuration. These mods I've done to Auzentech Meridian PC soundcard which jawdropping SQ results.

iF ANYONE CAN HELP i WOULD LIKE TO GET MY HANDS ON THE RX-V1600 SCHEMATICS. thanks.

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Old 11th August 2007, 08:29 PM   #5
anatech is offline anatech  Canada
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Hi weaponx,
What you just did was an attempted thread jack. I'm sure you didn't mean to do this.

To answer your question, no. Leave it at that for now.

Please start your own thread for requests like this.

Hi morfeeus,
You are very close to the same situation as weaponx. Same advice.

-Chris
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Old 11th August 2007, 09:06 PM   #6
sam9 is offline sam9  United States
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Quote:
could not find many (if any) people modding Yamaha receivers
Receivers squeeze a lot of functionality is to a relatively small space. It's not always too clear where one logical function leaves off and another begins. This could be especially true in the boundry between preamp and amp. To much "integration" can make diy mods awkward. They also don't leave a lot leeway regarding heat anything that increases the operating temp carried risks.

Nonetheless, it the unit is old enough just replacing electolytics might be helpful since those are first to the first components to expire. Once open I would zap all the pots (volume, balance etc with contact cleaner). If you can identify the opamps (if any) you might see if there is an opportunity there. I don't think you will get fabulous improvements from changing opamps, but lowering the noise might be possible.

And if any turn out to be RC4136 - there is NO direct replacement. The pinouts don't agree with anything else. However, you can get an adapter from Brown Dog that lets you solder two SMT dual SMT opamps on a small PCB that then plugs in to the RC4136 position Could let you upgrade to the equivalent of a quad version of NE5534. Brown Dog has some other adapters that can be handy for upgrading.

I don't know how old your unit is but if it has gold nickle plated RCA jacks, see if you can replace them with gold plated ones. I'm not one that beieves gold plate is magic but it does avoid oxidized contacts which can become noisy overtime.
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Old 12th August 2007, 09:49 PM   #7
anatech is offline anatech  Canada
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Hi sam9,
Quote:
I don't know how old your unit is but if it has gold nickle plated RCA jacks, see if you can replace them with gold plated ones. I'm not one that beieves gold plate is magic but it does avoid oxidized contacts which can become noisy overtime.
I disagree. Most Gold plated sockets suffer excessive plating wear. I'd rather have cadmium plating than a worn gold one. Nickel is interesting, copper would be the best if you didn't have to clean the oxides off every time you change connections.

-Chris
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Old 13th August 2007, 12:34 AM   #8
sam9 is offline sam9  United States
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Quote:
Hi sam9,
quote:
I don't know how old your unit is but if it has gold nickle plated RCA jacks, see if you can replace them with gold plated ones. I'm not one that beieves gold plate is magic but it does avoid oxidized contacts which can become noisy overtime.
I disagree. Most Gold plated sockets suffer excessive plating wear. I'd rather have cadmium plating than a worn gold one. Nickel is interesting, copper would be the best if you didn't have to clean the oxides off every time you change connections.
You are probably right about cadmium especially if you pull the plugs on and off a lot. I experience dates bake to mid 70's where every 6 months I had to clean the oxidation of the RCA connectors between a Girrard (sp?) turntable and a Marantz receiver. I would usually become aware of the need when I noticed sound coming from only one speaker. Other times I would notice faint crackly noise from one side or the other. In either cas cleaning the plugs and jacks fix the problem for a while. This never seems to be an issue cwith run of the mill gold plated plugs which I just connect and leave be for months and sometimes years.

Now that I think of it, I've got a DMM that needs to have the plugs and jacks squirted with Deoxit every few months to avoid absurdly bogus readings.
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Old 13th August 2007, 01:18 AM   #9
anatech is offline anatech  Canada
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Hi sam9,
Use 99% alcohol for your meter leads. Much better but you may need to do this more often. If you expect a high accuracy reading, you need to clean your terminals right before. Depends on the resolution of your equipment though.

Also, don't forget that a jack has two mating surfaces. There is a plug involved as well. The condition of the pin is very important. One with a bit of solder over will bend your center contact apart.

-Chris
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Old 14th August 2007, 07:26 AM   #10
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dudes!!

The mods I refer to are serious component replacement parts that would make an absolute dramatic improvement in sound quality. My reciever is 2 years old not some ancient decades old archived stereo product. The mods I have done to my soundcard I believe to be are the best parts available at a reasonable price that could acheive the best sound qualities possible for my sound preferences today, for the parts I required. I am looking to do the same mods for the receiver to bring up the level of performance that I've done for the PC card. Cheaply $100.00. My sound card modded to me sounds like a 5k CD player.
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