Denon DVD 2900 Issue

AsSiMiLaTeD

Well I just found an issue with my Denon 2900. There are two sets of front audio jacks on the back, and when testing out the set on the right, I'm hearing an intermittent buzzing/static sound. It's definitely the jack, not a cable issue.

When I wiggle the cable back there I get that sound, but still get the sound some when I don't touch it (that's how I heard it in the first place).

I'm not the soldering type, any thoughts on what my options would be?

I'd posted it for sale and found this issue when testing it out. I don't want to sell it in this condition, so I'd either like to get it fixed if it's not too expensive, or I'll just keep it and use the other set of outputs.

Thanks

AsSiMiLaTeD

I'm attaching a picture of the back, the outputs affected are circled

billbillw

Sounds like a bad solder joint.

Its very common with RCA jacks, and it is usually easy to fix it you can get to it without tearing everything apart. Usually you just have to reflow the solder and it will be fixed. If not, you just wick away the old solder and add new stuff. Do you have any friends that are handy with a soldering iron? IMHO, it would be crazy to take this to a shop to get if fixed since it is such an easy thing to do.

EDIT: I checked the service manual for this. Looks like the video board sits on top of the audio board. So to fix it, you would have to remove the video board, then the audio board. Looks like two wiring connectors on each. That is a relatively easy disassembly compared to some.

AsSiMiLaTeD

I don't have any friends....just you guys

I'll take it apart later and see what i can figure out. If it looks complicated I'm not gonna jack with it since I know the other outputs work and dont' want to screw anything up. Worst case I can just buy an outboard DAC and use the optical output. I'm not crazy about the DACs in the player itself, but it makes for one hell of a transport.

billbillw

Polkmaniac wrote: »

I don't have any friends....just you guys

I'll take it apart later and see what i can figure out. If it looks complicated I'm not gonna jack with it since I know the other outputs work and dont' want to screw anything up. Worst case I can just buy an outboard DAC and use the optical output. I'm not crazy about the DACs in the player itself, but it makes for one hell of a transport.

Outboard DAC wouldn't work for SACD. Seriously, its an easy fix.

AsSiMiLaTeD

Doh, completely forgot about SACD playback only working via the analog outputs. Okay, well I'll take a better look then. I've no worries about dis-assembling the unit, I do that with computers all the time. Soldering on the other hand is a different story.

I'm gonna head up to Fry's and see if they have a soldering iron and something cheap to practice on

Is that service manual available to the genera public, or can you send me a copy?

billbillw

Polkmaniac wrote: »

I'm gonna head up to Fry's and see if they have a soldering iron and something cheap to practice on

Is that service manual available to the general public, or can you send me a copy?

Grab some solder wick and a small tube of solder just in case re-flowing doesn't do the trick. (sometimes there wasn't enough solder to begin with)

The service manual is too big to send. I think you can download it here (in multiple parts, you need winrar to reassmble it)

http://www.eserviceinfo.com/downloadsm/25679/Denon_DVD2900.html

Honestly, the service manual won't be of much help to you. Its mostly schematics, parts lists, and troubleshooting.

Sansui

Polkmaniac wrote: »

I'm gonna head up to Fry's and see if they have a soldering iron and something cheap to practice on

A 25 watt soldering iron should do it. "Tin" the new soldering iron first. Let it heat up and touch the solder to the tip of it and sling of the excess (that's what I do) then let it cool down. Just be careful with the iron and melted solder, they're hot and you can burn yourself or if you lay the tip something that will burn/melt while it's cooling down.

Heat up the soldering iron again and hold it to the area you want to add solder to and wait a little bit for the solder that's on there to melt then add to it a little bit of solder to the melted solder or the metal. It's better, if possible, not to put the solder on the soldering iron. It doesn't need it, your connection does. You need to wait for the metal to get hot enough to melt the solder first. If you don't then you've made a cold solder joint. :eek:

You don't want or need solder that's big around as a even 1/4". The solder you want is a bit smaller than 1/8" in diameter.

Hope this helps...