M50 problems

Discussion relating to the Korg M50 Workstation.

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aaronpico
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Post by aaronpico »

McHale wrote:...The M50 is actually built pretty well IMHO.
Compared to what? I have a Kurzweil PC1SE that weighs in at about 50lbs. It will last way longer under real working musicians conditions than the M50. I also had a Roland XP-30 which had a superior keybed (ask anyone who has owned both), and a metal chasis. I'd lay odds that the XP's will stand the test of time better than the M50-61.
aaronpico
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Post by aaronpico »

McHale wrote:
aaronpico wrote:...which suggests that Korg utilizes similar or like construction in the different boards, which seem to be failing in the same way.
I'm fairly confident that most who complain of problems don't tear their boards apart when there's an issue. I tear all of mine apart when there isn't a problem *AND* when there's an issue. I've owned (and disassembled) almost every Korg synth since the PolySix and I don't see how that could be even remotely possible. Surf around my photos and you can see internal shots of the DW-8000, DSS-1, Triton, and M50.

Every new synth/workstation takes advantage of advances in technology so boards get smaller, there's less wiring, and everything is more efficient. I gigged my DW-8000 for 6 years. I've been gigging my Triton Classic since I bought it new in 1999. And I've gigged my M50 since I bought it new almost 2 years ago. I haven't had those problems in any of my heavily gigged synths and you can look at my gear list below to see what I currently own. They aren't having that issue either.
That's all well & good, but tearing your boards apart when there's a problem is an instant ticket to voiding your warranty. And really, are you suggesting that I should expect something to go wrong with a three month old instrument that has suffered absolutely NO damage causing incidents? I mean, is that the way it's REALLY supposed to be?

The reason I'm complaining is because s**t's not supposed to go wrong with some things...ever, if they're constructed well. The warranty is supposed to be there just in case something was faulty in the manufacture.
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McHale
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Post by McHale »

aaronpico wrote:
McHale wrote:...The M50 is actually built pretty well IMHO.
Compared to what?
Compared to other lightweight synths/workstations in that class. Your Kurz is a $2000 controller. That's not an apples to apples comparison. But I'm curious what part of the M50 WON'T stand the test of time in your opinion. The circuit boards? The keys? What? I'd trust it over ANY Roland, any day.
Current Korg Gear: KRONOS 88 (4GB), M50-73 (PS mod), RADIAS-73, Electribe MX, Triton Pro (MOSS, SCSI, CF, 64MB RAM), SQ-64, DVP-1, MEX-8000, MR-1, KAOSSilator, nanoKey, nanoKontrol, 3x nanoPad 2, 3x DS1H, 7x PS1, FC7 (yes Korg, NOT Yamaha).
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McHale
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Post by McHale »

aaronpico wrote:That's all well & good, but tearing your boards apart when there's a problem is an instant ticket to voiding your warranty. And really, are you suggesting that I should expect something to go wrong with a three month old instrument that has suffered absolutely NO damage causing incidents? I mean, is that the way it's REALLY supposed to be?

The reason I'm complaining is because s**t's not supposed to go wrong with some things...ever, if they're constructed well. The warranty is supposed to be there just in case something was faulty in the manufacture.
What you're complaining about isn't a common complaint with ANY Korg let alone the M50. But I have worked retail and I've seen people bring back TV's that they dropped onto concrete and they yell and scream how it's not their fault and demand it to be fixed or repaired because it's less than a year old. If you're having repeated problems, maybe you need to dig deeper into what's causing the issue.

And for the record, I wouldn't recommend ANYONE to tear into their gear - especially if it's under warranty. My only point is, I am more familiar with the "innards" of the M50 than most and I'm not aware of anything that is a design flaw.
Current Korg Gear: KRONOS 88 (4GB), M50-73 (PS mod), RADIAS-73, Electribe MX, Triton Pro (MOSS, SCSI, CF, 64MB RAM), SQ-64, DVP-1, MEX-8000, MR-1, KAOSSilator, nanoKey, nanoKontrol, 3x nanoPad 2, 3x DS1H, 7x PS1, FC7 (yes Korg, NOT Yamaha).
aaronpico
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Post by aaronpico »

Some posts from the Trinity forums * Yahoo group:

Re: [Korg Trinity Club] Re: Left channel problems


ok mine does the same thing all the time. when one side of the headphones goes out i know its doing it again. heres what i did and do. lay the board face down on the sofa with pillows on the ends so there is no weight on the joy stick. take the back off. take a wooden stick or a plastic straw and starting at the headphone jack, wiggle the wires, or press down on them on that whole side. you will have your headphones on and a rag under the keys so you can have some sound.
BE CAREFULL !!! THE POWER IS ON!! if you are not comfortable ask some who is. i poked around and when i heard both sides of the headphones come back, i knew where the problem area was. i then found the position where the wires connected properly and used a cable tie to keep the wires in that area. i did no soldering. yes it is a design flaw.. hope this helps. it takes about a half an hour or less if you have an electric screw driver.
chicago fred
--- On Wed, 11/17/10, No Comment <aaronpico2004> wrote:





--- In korgtrinityclub@yahoogroups.com, "hymie3557" <hymie3557> wrote:
>
> Hi all - I've got a trinity Plus that I've had since I bought it brand new back in 1998. But it has had an awesomely irritating, expensive and recurring problem and I am wondering if anyone else had ever had this problem or could offer some insights of some sort on it. I haven't been keeping count, but I estimate that literally at least 10 times I have had my left channel go out. Every time it goes out it is both the outputs from the L chan out jack and also the headphones. When I first got the board, I had no problem finding local people willing and able to fix it, but they were never very informative about exactly what they did or what exactly was wrong. All I know is that every time it's been fixed it has cost anywhere from 90 to almost 200 dollars. That last time this happened(about 1 year ago) the last place in town that I could find willing and able to fix it told me they were discontinuing their keyboard support and not to bring it there anymore. And now it's happened again. Not only do I not know how to get it fixed anymore, but even if I can, how can I stop this from continuing to happen? One tech told me once that in his opinion I've been abusing the cords and/or headphone plugs while plugged in, stressing the plugs. But I know that is not the problem. I virtually never move my board. I have not been in a band in years and it only sits on it's stand in my basement 24/7 and I use right-angle cords to reduce stress and it still happens. HELP!



"Further to my posts in 2008 regarding faulty output "Trinity of Worries" I have at last found the possible cause and will show you how I fixed it in my case. The fault lies with the group of grey cables that carry the signal between the output board and the board with the volume control. The connectors are a poor fit and the movement of the cable is working the connectors loose. FIX: Lay the Trinity face down on a blanket towards the right side of a table so the pitch bender is not on the table. Take off the back. Remove the connectors from the pcb that holds the output sockets then remove the board itself. The pcb that lies underneath has two screws visible, loosen off the two nearest the four grey cables.
Find a small piece of rubber approx 4mm thick and the size of a stamp. Drop a small amount of Superglue on it and gently squeeze it inbetween the chassis and the connector.
When you tighten up the screws, this will prevent that end of the connector working loose. Refit the output board. Before you re-connect the connectors, look at the pins on the socket for the four grey cables. This is the culprit. CAREFULLY push the two pins nearest the back of the Trinity, slightly to the left. They are marked (R IN and SEALED). This will improve the connection. CAREFULLY push the connector into ints socket. Using a small piece of gaffer tape, restrain the cables and also the headphone cable to the inside of the chassis. Hope this helps, It worked for me. If you would like images of this fix, please email me at derek@ornate-frames.com ~ Good luck!
Georgeymc
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Post by Georgeymc »

HI all....I got an e-mail from my retailer saying that korg have yet to give him any idication of when my board will be back in Dublin : (
Just reading through the posts here........some fan boy stuff maybe???
Just another thing to say to the disbelievers, when I left my M50 back for the second time there was another M50 all ready to be sent back for freezing problems........in this day and age you kind of expect electronics just to work and work well and if a problem appears you expect to have it repaired to a good standard, none of this has happened in my case with Korg.......even if the board comes back in better working condition it will b a long time before I go out to work without a spare in the boot.
P
DoctorMo
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Post by DoctorMo »

Just a quick follow-up...

The local Korg repairman had our M50-61 back in about 3-4 days. As far as we can tell, replacing the bad capacitors solved our problems.

mike
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Post by aaronpico »

I just called the service center that has my M50-61; it had been there for two weeks, and I wanted a status update.
I sent it in because the left channel was also cutting out. The guy there tolk me that the Jog Wheel aslo tested as bad, so there's another issue. At least they're being thorough.
DoctorMo
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Post by DoctorMo »

One of our channels was cutting out at the same time when we were having power/lock-up problem. However, I don't recall which channel was having the problem.

Replacing the caps appears to have solved this problem, too.

mike
aaronpico
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Post by aaronpico »

McHale wrote:
aaronpico wrote:That's all well & good, but tearing your boards apart when there's a problem is an instant ticket to voiding your warranty. And really, are you suggesting that I should expect something to go wrong with a three month old instrument that has suffered absolutely NO damage causing incidents? I mean, is that the way it's REALLY supposed to be?

The reason I'm complaining is because s**t's not supposed to go wrong with some things...ever, if they're constructed well. The warranty is supposed to be there just in case something was faulty in the manufacture.
What you're complaining about isn't a common complaint with ANY Korg let alone the M50. But I have worked retail and I've seen people bring back TV's that they dropped onto concrete and they yell and scream how it's not their fault and demand it to be fixed or repaired because it's less than a year old. If you're having repeated problems, maybe you need to dig deeper into what's causing the issue.

And for the record, I wouldn't recommend ANYONE to tear into their gear - especially if it's under warranty. My only point is, I am more familiar with the "innards" of the M50 than most and I'm not aware of anything that is a design flaw.
Here's another recent post:

http://www.korgforums.com/forum/phpBB2/ ... hp?t=57149
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Rodan
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Post by Rodan »

Hi guys, i'm new here, i'm from chile :P
here everything is more expensive, in fact the korg m50/73 is about 2.000 us...
I have read, watch and hear a lot of this workstation, and i really like it, but i'm concerned about this issues, that looks to be very common.
i'm looking after the 73 keys version, and I have read that this problem is more frecuent in the early 61 and 88 keys version. it's that true?
and did you know if the lastest versions of this keyboard have or don't have this issue, and over what serial number i'll have to look after?
i don't want to expend so much money in a keyboard that will fail in 6 months :(
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kimu
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Post by kimu »

it is said to happens with early production of M50 that contains bad capacitors... but korg has never announced officially which SN are affected...

anyway, in this tread

http://www.korgforums.com/forum/phpBB2/ ... r&start=15

some SN that got the problem are traced
Rodan
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Post by Rodan »

thanks a lot!
I'll read a little more and think about the best opcion =/
obviously the m50 is the best WS for the price, but the problems that have make me feel conserned about buying one.
mrteclas
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Post by mrteclas »

The capacitor's problem happened the most with early 61 and 88 versions, I think the 73 version is safer. Besides, if it has a high serial number, the chances of having bad capacitors are less.
Gear: Korg M50, Korg Monotron, Kurzweil KP-1, Boss FS-5U.
Rodan
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Post by Rodan »

thanks!
i think I'll buy a 73 key version, and keep it safe in my home, o go there and there with a hard case or something, just in case :P
anyway, y used to have a casio WK1800 long time ago, with "A VERY PLASTIC FEEL :P" and never have an issue with it in 4 years, until I sell it... just have to be careful. i'm sure the KORG have a beter construction than a casio..
thanks a lot for the comments, i will tell you how it goes...
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