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Solve : Stereo Assistance? |
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Answer» Does anyone know of a board/forum similar to this, but could help me troubleshoot/repair a solid-state electronics issue? I'm having trouble with my amplifier and equalizer playing nice... ... I sporadically get static through my left channel. If I take the EQ out, or turn off Tape Monitor, the static goes away. So, for starters, does this indicate a problem with the amplifier? EQ? Should I start swapping patch cords willy-nilly? I'm guessing it's inside the EQ, but it COULD be a problem with the tape monitor function, no?...Without knowing the age of this equipment, it seems like a bad connection. Dust gets into the switches and can create static. Corrosion can do the same. Sure, start swapping patch cords, left channel to right channel.When I say "static", I mean the channel cuts in and out, with a white fuzzy sound that is akin to static on a radio dial - more specifically, the sound when your dial is between stations. Am I swapping out channels just to see if the issue migrates to the other speaker (that is, is dedicated to the channel)? Should I pop her open and hit it with compressed air? I was presuming it was something electronical... Thanks. Quote from: rjbinney on May 27, 2010, 06:10:44 PM When I say "static", I mean the channel cuts in and out, with a white fuzzy sound that is akin to static on a radio dial - more specifically, the sound when your dial is between stations.I know what the "static" is, I have a 40-year old Marantz, I repaired all the switches & controls that exhibited static with Corrosion Block. Repaired automotive switches with the same stuff. Swapping channels to see if the issue migrates or just unplugging & plugging "wipes" the contact area; same issue as computer memory and/or plug-in cards. It might be "electronical" & it might not. It's analog, not digital.It's a TEAC EQA-20. What is this Corrosion Block and what do I do? (There are two YouTube videos just of this eq... What the what? Why would anybody do that?) Quote from: rjbinney on May 27, 2010, 06:10:44 PM ...Should I pop her open and hit it with compressed air?...That's what I would do. Always good to open it up every 20 years or so. If you see a lot of dust, that's most likely the problem. Corrosion Block http://www.nocorrosion.com/corrosion-control.htm http://www.westmarine.com/1/1/15102-corrosion-block-12oz-aerosol.htmlOK, that IS what I thought you were talking about. I probably won't get a chance to pop it open til next weekend. Why would corrosion explain the fact that it cuts out sporadically? Intuitively, I would think that corrosion would cause a continuous problem - that is, once I lost the channel (or started getting the white noise), it would remain in its failed state. Will let you know what I find. Thanks Quote from: rjbinney on May 28, 2010, 12:37:19 PM ...Why would corrosion explain the fact that it cuts out sporadically? Intuitively, I would think that corrosion would cause a continuous problem - that is, once I lost the channel (or started getting the white noise), it would remain in its failed state...I didn't say it was corrosion. It could be oxidation or dust on the contacts. This condition changes the RESISTANCE & capacitance of the device and can have a major effect on the electrical characteristics. As I said before: it's ANALOG, not DIGITAL.You're right, you didn't say it was corrosion... I just inferred it from your post. (You say "analog" like it's an insult, like "Democrat" or "Canadian"...) Nevertheless, I would be surprised if it is dust, none of the equipment has ever shown buildup... But you never know. I was surprised when my wife WENT out with me on our first date - so stranger things have happened. What I STILL don't understand, is, since there's nothing else has changed or moves, why the problem would be sporadic. I get how any type of corrosion (or oxidation, no BIG diff) could cause this problem, but intuitively it would make sense that once it's in its defect state, it stays in its defect state - not cutting in and out at random. If there's a simple, layman's way of explaining that, I'd like to learn. Thanks, rjb Quote from: rjbinney on May 28, 2010, 10:30:52 PM You're right, you didn't say it was corrosion... I just inferred it from your post. (You say "analog" like it's an insult, like "Democrat" or "Canadian"...) Thanks. Good to be reminded sometimes that my nation is just one big joke.Don't be down on yourself, there are lots of smaller jokes, as well! (Although Canadian aspirin is much much better!) USA! USA! USA! Um, what were we talking about again?Oh, I guess I forgot the in my post, so it looks like I am a lot more serious then I am, heh. |
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