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  • EADD Moderators: Pissed_and_messed | Shinji Ikari

EADD Music Production Thread: Side B

Aye, gonna try, but I felt a dramatic post talking as if the synthesiser was a close mate would be more fun to type out.
I opened it up and took a look around, nothing looks physically damaged from the inside, but the actual connection for the power supply appears to be corroded or a bit rusted, but I'd expect that shouldn't stop it from conducting electricity.

I know an electrician, so I'm gonna get him to have a wee look at it, see if he can sort it out, before I even consider sending it to someone who actually fixes synths.
 
Does nothing light up at all when you plug it in? The corrosion could well be enough to stop it from working, or it could be a symptom of wider damage. Did you try changing polarity on your power supply?

Heading home with a free synth in a bin bag is a fine feeling, and one I know and love. Sorry it hasn't worked out so far.
 
I typed a fairly long reply last night and hit reply, but must've timed out before I realised and closed the window.

The gist if it was "I opened it up to see if I could see any physical damage. I know an electrician so I'm gonna see if he'll take a look at it before I even consider sending it off to someone who actually fixes synths, who'll charge for it."

Nah, nothing happens at all, sadly. I do 't think the corrosion is system wide damage, because when I opened it up I couldn't see any visible damage other than the power socket, but I don't really know what I'm doing, I was just looking around for loose wires and any parts I could see were quite clearly damaged, haha.

Hopefully I can get it sorted, it'd be a shame for it to be wasted!
 
Yeah defo see if a mate can have a look for free / a cup of tea before sending it off anywhere.

Did you see my post about the power polarity? The korg needs negative at the centre of the power adaptor pin, you might be using one with positive centre.
 
trammies said:
I typed a fairly long reply last night and hit reply, but must've timed out before I realised and closed the window.

The gist if it was "I opened it up to see if I could see any physical damage. I know an electrician so I'm gonna see if he'll take a look at it before I even consider sending it off to someone who actually fixes synths, who'll charge for it."
Click to expand...

This?

trammies said:
Aye, gonna try, but I felt a dramatic post talking as if the synthesiser was a close mate would be more fun to type out.
I opened it up and took a look around, nothing looks physically damaged from the inside, but the actual connection for the power supply appears to be corroded or a bit rusted, but I'd expect that shouldn't stop it from conducting electricity.

I know an electrician, so I'm gonna get him to have a wee look at it, see if he can sort it out, before I even consider sending it to someone who actually fixes synths.
Click to expand...
 
Cheers for that Marley Marl link by the way, PTCH, liked it a lot, especially his face still lighting up after all these years as he went into detail about how that track was made!
 
jancrow said:
polyk.jpg
Click to expand...

sweet!
 
I'm pretty pleased with it! Definitely needs a compressor / limiter or what have you after it because now it can resonate in a way which just isn't good for speakers / ears / etc. I need to remember how to program it to get the best out of its new capabilities but the stock patches are still providing some extremely promising squelchytimes.
 
Yeah, that ptch, it's not showing up in my browser, for some unknown reason...

And apologies Jancrow, I thought I responded to the suggestion about polarity.
You're right that the Korg is labelled as negative, but the power supply is labelled as positive, so I have no idea.
The fact the power supply has a high current should make no difference, shouldn't it? Because the Korg'll only use the 700ma that it needs?
 
trammies said:
The fact the power supply has a high current should make no difference, shouldn't it? Because the Korg'll only use the 700ma that it needs?
Click to expand...

Correct, current ratings are the maximum current the supply can deliver. Ohm's law will be obeyed.
 
Cheers knockando :D

Oh, I misread what Jancrow said, as well. Isn't the symbol for negative polarity when the stem comes off of the negative symbol? As that is what the Korg has. At any rate the power supply has the opposite, so I'd assume there is sufficient damage to the synth somewhere to stop it from working, and that it's not a problem with an incorrect power supply. Thanks for the suggestion, though. :)
 
As long as your V are alright (probably 12?) it should work, but the power supply polarity is an enormous biggie and may well be why it's not firing up at all. If your PSU is one of them with swappable ends you may be able to plug the attachment in differently. If it isn't and you don't mind cutting the wire on the PSU cut it and flip it so that what was left is now right. If you can't do either of them get your arse down to Maplin and get a PSU with switchable ends or a polarity switch on it or something.

edit: Posted that before reading your last post...

THIS is a positive centre PSU symbol

powerplug-positive.jpg


Yours is presumably different but either way the PSU centre should match what the Korg is asking for, not supply the opposite as I infer from your post above.
 
trammies said:
Cheers knockando :D

Oh, I misread what Jancrow said, as well. Isn't the symbol for negative polarity when the stem comes off of the negative symbol? As that is what the Korg has. At any rate the power supply has the opposite, so I'd assume there is sufficient damage to the synth somewhere to stop it from working, and that it's not a problem with an incorrect power supply. Thanks for the suggestion, though. :)
Click to expand...

Don't know what you mean by the stem coming off the negative, but incorrect polarity can damage semiconductors and electrolytic capacitors (the cylindrical, usually vertically mounted, ones).
 
knock said:
Don't know what you mean by the stem coming off the negative, but incorrect polarity can damage semiconductors and electrolytic capacitors (the cylindrical, usually vertically mounted, ones).
Click to expand...

It can, but there is almost CERTAINLY at least one diode after the PSU to make sure it's sucking in power in the right direction. As I expect you know. :P

parttime crackhead said:
I don't have a clue about this but I'd assume you'd want a power supply with the same symbol as the one on the synth, no?
Click to expand...

Yeah THAT
 
So the symbols refers to what it needs? I've never paid much attention to polarity because everything I've ever gotten has had the power supply with it. I assumed it'd need a supply with the opposite polarity, but now thinking about it, I'm not sure why I did...

knock said:
Don't know what you mean by the stem coming off the negative, but incorrect polarity can damage semiconductors and electrolytic capacitors (the cylindrical, usually vertically mounted, ones).
Click to expand...

Apologies, I'm probably explaining stupidly. Hopefully I haven't fucked the thing over even more now...
 
You just wanted to show off about capacitors.

edit:
trammies said:
So the symbols refers to what it needs?
Click to expand...

Yes

I've never paid much attention to polarity because everything I've ever gotten has had the power supply with it.
Click to expand...

Most things are positive centre in my experience anyway.

Apologies, I'm probably explaining stupidly. Hopefully I haven't fucked the thing over even more now...
Click to expand...

You probably haven't, it will have safety measures (ie diodes) which act like a one-way trapdoor to stop the current going round the wrong way and maiming Knock's beloved capacitors.
 
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