Is this worth fixing?

[kmcorolla15]

Saw this on Marketplace and thought of taking it on for a repair project. Technics SA-DX940 for $20 - but has distortion after a short time. Trying to teach myself how to repair these things and was wondering if this was worth fixing. Thanks in advance!

 

[Mikado463]

if it's the learning experience you're after ...............

 

[kmcorolla15]

if it's the learning experience you're after ...............

As long as it's not some junk that's going to break right after I fix it. ;-)

 

[BoredSysAdmin]

Is it worth it financially? Hell, No. In my area, a quick look at CL shows me a Denon AVR-1610, a much newer generation with actual HDMI ports, for $50.
There is also a Sony STR-DG720 asking $65 - I'm sure they agree for $50 or less.
Both are in fine working condition.

If you think you can get the tools and spend hours for less than $45?? Best of luck to you

Now, if you are looking for a learning experience, you can take it from that dude's hands for free or, to let him not feel too bad, give him $5 tops.

 

[kmcorolla15]

Is it worth it financially? Hell, No. In my area, a quick look at CL shows me a Denon AVR-1610, a much newer generation with actual HDMI ports, for $50.
There is also a Sony STR-DG720 asking $65 - I'm sure they agree for $50 or less.
Both are in fine working condition.

If you think you can get the tools and spend hours for less than $45?? Best of luck to you

Now, if you are looking for a learning experience, you can take it from that dude's hands for either free or, to let him not feel too bad, give him $5 tops.

I'm starting to think the same thing. This is just going to be for a second system anyway. My fear with the Technics was that I would buy it for $20 then dump three times that in frustration and parts.

 

[Mikado463]

I'm starting to think the same thing. This is just going to be for a second system anyway. My fear with the Technics was that I would buy it for $20 then dump three times that in frustration and parts.

see then, it appears you've already 'learned' without picking up a soldering iron !

 

[TLS Guy]

View attachment 63799

Saw this on Marketplace and thought of taking it on for a repair project. Technics SA-DX940 for $20 - but has distortion after a short time. Trying to teach myself how to repair these things and was wondering if this was worth fixing. Thanks in advance!

That is a 24 year old AV receiver and absolutely worthless. It is pre HDMI.

The next issue is what equipment and experience to you have? To fix a unit like that requires a large inventory of expensive test equipment. Do you have any equipment to service a unit like that?

Do you know how to service equipment like that, without killing yourself?

 

[lovinthehd]

My general thought for a post like this if you knew what to do you wouldn't be asking like this....

Maybe as said as a learning thing, as a practical thing not so much.

 

[mono-bloc]

So you spent 20 bucks on an AVR, a power supply (for who knows what) and a couple of remotes. I'ts a good deal for two remotes.

As for being pre HDMI, That's not really going to end the world. Just about everyone has "hand shake" problems HDMI is a long way from being perfect.

 

[TLS Guy]

So you spent 20 bucks on an AVR, a power supply (for who knows what) and a couple of remotes. I'ts a good deal for two remotes.

As for being pre HDMI, That's not really going to end the world. Just about everyone has "hand shake" problems HDMI is a long way from being perfect.

The problem is, like HDMI or not, we are well past the analog sunset. That means that for AV, at least the V part, there is a forcing of HDMI.

 

[mtrycrafts]

So you spent 20 bucks on an AVR, a power supply (for who knows what) and a couple of remotes. I'ts a good deal for two remotes.

As for being pre HDMI, That's not really going to end the world. Just about everyone has "hand shake" problems HDMI is a long way from being perfect.

Is anything out there perfect? Not even the universe that has been around for a few moons.

 

[mono-bloc]

The problem is, like HDMI or not, we are well past the analog sunset

Regardless of what I like or dislike, It's completely irrelevant to the OP's question about fixing an AVR.. BUT instead of offering constructive advice on the subject, you go on and waffle about what should be done and of cause promote yourself. Instead of offering constructive advice that any beginner could follow. There really is little point in promoting yourself, everyone already knows just how wonderful you are.

As to the OP''s question I should like to ask , does the breakdown effect the video or the audio, Or does it affect both. If it does I should like to suggest you look at the power supply, given the age of the unit I would think. And it's only a guess, That one of the Cap's is ether breaking down or has dried out

 

[mono-bloc]

we are well past the analog sunset

While this is outside the OP's question, I think it should be answered even if it is off topic, Really an AVR is just a HDMI switch box, and while it's the excepted way of doing things in the AVR world, it's hardly an Audio standard. In fact HDMI was never designed for audio, it's for video. And like it or not the audio signal simply piggybacks on the video signal path. It's very rare to see an HDMI connection offered on mainstream audio. So your statement about an Analog sunset. Is so far off beam it fails to be funny. It's simply a statement from someone who knows very little about real Hi-Fi reproduction. Of perhaps you do in fact own a turntable with an HDMI connection socket.

 

[Kingnoob]

View attachment 63799

Saw this on Marketplace and thought of taking it on for a repair project. Technics SA-DX940 for $20 - but has distortion after a short time. Trying to teach myself how to repair these things and was wondering if this was worth fixing. Thanks in advance!

Junk I think . Maybe if it was $5 as said before it might be worth practicing fixing .

 

[kmcorolla15]

I think I'm going to pass on this one. I don't have any test equipment as of yet but eventually want to learn how to fix these things.

 

[kmcorolla15]

So you spent 20 bucks on an AVR, a power supply (for who knows what) and a couple of remotes. I'ts a good deal for two remotes.

As for being pre HDMI, That's not really going to end the world. Just about everyone has "hand shake" problems HDMI is a long way from being perfect.

I didn't buy it. I don't even think the Bluetooth adapter that comes with it is worth that much.

 

[mono-bloc]

I think I'm going to pass on this one. I don't have any test equipment as of yet but eventually want to learn how to fix these things.

sometimes a good look, will show you a blown Cap, or a dead fuse.. If you could afford test equipment then you could also afford a new AVR

 

[chaz57]

That is a 24 year old AV receiver and absolutely worthless. It is pre HDMI.

The next issue is what equipment and experience to you have? To fix a unit like that requires a large inventory of expensive test equipment. Do you have any equipment to service a unit like that?

Do you know how to service equipment like that, without killing yourself?

Exactly, at a minimum you'd need an O-scope, multimeter, and a signal generator, maybe a DC and AC power supply as well, along with a manual with schematics and test points listing the expected signal and voltage values. Then to fix the issue you'd need a soldering iron (station), the knowledge as to how to use correctly, parts, and the ability to properly replace a transistor, diode, etc. I've been an electronics technician for over 30 years and believe me it can be really frustrating to fix an issue if you don't use proper troubleshooting technics and flow charts per the manual. I used to have all of that equipment at home but the wife made me get rid of it, all I have left is a multimeter

 

[highfigh]

I didn't buy it. I don't even think the Bluetooth adapter that comes with it is worth that much.

That Logitech BT adapter is a total piece of garbage- I have one and it's terrible. The range is very short, maybe 25' on a good day. AVRs that have BT built in work much better- I used this in a fitness facility and it was so bad I replaced it with a Miccus BT adapter, which I found out about when I did the audio upgrade in a school gym- until I found out about that one, I knew that BT was terrible because of past experience and what I had heard/read from other people who install this stuff (I'm one of those, too)- once I received it and checked it out, I found that what I knew up to that point was dead wrong. When I checked out the Miccus, I found that I could be across the street and down a few houses without losing the connection and that meant the distance was in the 150' range. The previous BT adapter I had checked out barely did 25' and that one retailed for $250.

 

[lovinthehd]

Curious, aside from the budget/repair aspects, since it was brought up.....just how important are modern codecs and connectivity in this application? If anything the more modern avrs would definitely be harder to work on (other than outright board replacement) than some old analog only 2ch rig....