Right ! Poor (or failed) voltage regulation or filtering can be the cause of these issues. If i remember a voltage regulation is implemented inside the AN1x, at least for the 5V for digital ICs. Cheers. J.F. Bob S. a \ufffdcrit : > > The switchable voltage supplies don't always provide the full rated > current at the highest voltage output, it depends on how they are > spec'd... > > If you can measure the supply voltage while operating under load, you > may see a reduced or modulated voltage on the power supply when there > is more current needed by the device (AN1x) than can be provided by > the supply. > > Bob > El Segundo, CA > > ----- Original Message ----- > From: Oliver Fairhall > To: AN1x-list@yahoogroups.com <mailto:AN1x-list%40yahoogroups.com> > Sent: Thursday, October 14, 2010 23:45 > Subject: Re: [AN1x] Re: Sound problems with AN1x > > Thanks for the info. > > I'm guessing the one you bought from Maplin, doesn't really perform as > specified. > > On 14/10/10 18:54, arthtrin wrote: > > > > Its been a couple of years since I started this post. I think I know > what the culprit of this problem with the sounds on my AN1x were. The > culprit was the power supply. Just a few days ago I resurrected my > AN1x from the attic but lost the power supply. I then found a power > supply which was 12v 600mA from a hard drive I have and it worked like > a charm on my AN1x with no problems with sounds going weird or fading > etc. The only problem was that I had to change the internal battery. > However I was a bit worried using the power supply as it is 600mA > instead of the required 700mA so I went to my local Maplin store and > bought a power supply with volts selector. I then adjusted the volts > selector to 12V (which according to the box has 1.4amp) and connected > it to my AN1x. After a while of it being connected I started having > the problems with the sounds going all weird again. I then > disconnected the power supply and reconnected my other power supply > and it was back working normal agai > n. > > > > I am convinced that the power supply I used originally on my AN1x > and the new one I bought from Maplin was and is the problem. > > > > Art > > > > > > > > --- In AN1x-list@yahoogroups.com > <mailto:AN1x-list%40yahoogroups.com>, Jeff<jf.serviere@...> wrote: > >> > >> It looks more likely like a ribbon controller problem : play, hit it > >> gently with your fingertip and listen...maybe you'll have to open your > >> synth , clean and plug firmly the ribbon controller connector to > fix it. > >> The connectors and IC sockets are often the hidden "Achille's heel" of > >> electronic devices. > >> For the supply unit : these wallwarts are often crap pieces of > >> electronics, but mine works perfectly (at the moment, maybe > >> tomorrow.??). The Yamaha unit is a bit expensive for what it is, > but you > >> can try any similar supply rated at 12V - 700 mA, "+" at the center of > >> the connector. Don't try higher voltages, but a 1 amp supply will work > >> even better. > >> Cheers. > >> J.F. > >> > >> jammie a \ufffdcrit : > >>> > >>> > >>> is your psu large enough as its getting hotter it sounds like the > >>> voltage is dropping i had this problem with a faulty psu it would > >>> start after 5 minutes and the sounds would start to get distorted > >>> > >>> psu are the biggest problem with any electronic equipment and > >>> wallwarts are the worst as everything is compacted into a plug size > >>> package > >>> > >>> get another psu and try that first before suspecting the synth > >>> ----- Original Message ----- > >>> From: jondl_2000 > >>> To: AN1x-list@yahoogroups.com > <mailto:AN1x-list%40yahoogroups.com><mailto:AN1x-list%40yahoogroups.com> > >>> Sent: Sunday, September 20, 2009 6:10 AM > >>> Subject: [AN1x] Re: Sound problems with AN1x > >>> > >>> --- In AN1x-list@yahoogroups.com > <mailto:AN1x-list%40yahoogroups.com><mailto:AN1x-list%40yahoogroups.com>, > >>> "palemilk"<palemilk@> wrote: > >>>> > >>>> --- In AN1x-list@yahoogroups.com <mailto:AN1x-list%40yahoogroups.com> > >>> <mailto:AN1x-list%40yahoogroups.com>, "Arthur Alexander Crichton" > >>> <ac010b4919@> wrote: > >>>>> > >>>>> Hi, > >>>>> > >>>>> I have a problem with my Yamaha AN1x. > >>>>> > >>>>> When I select some pad sounds on my AN1x the sounds are bright and > >>>>> after about 3 seconds the sound just cuts off to a duller sound > which > >>>>> is very low in volume. When I press the keys again all I get is a > >>>>> faint dull sound. I try to play the keys harder but I still get this > >>>>> sound. Before I had this problem, those paticular patches used to > >>>>> sound bright and full. Also, I have noticed some sounds sound > thinner > >>>>> than what they used to and that sounds that rely on arpeggio or lfo > >>>>> sound muddy and strange. > >>>>> > >>>>> What is wrong with my beloved AN1X? > >>>>> > >>>>> I have tried cleaning the control knobs with switch cleaner but I > >>>>> still get the same problem. BTW the rom version on my AN1x is v1.02 > >>>>> > >>>>> Please help. > >>>>> > >>>>> > >>>>> Arthur > >>>>> > >>>> > >>>> I realize this thread/topic is over a year old, but I recently got > >>> an AN1x again (had one a few years ago) and was experiencing this > >>> exact problem as stated in the original topic. Some patches sound > >>> normal for awhile and then suddenly sound thinner. After messing > >>> around with it for a bit trying to isolate the cause I'm 99% convinced > >>> this is a ribbon controller issue (specifically the Z axis). Applying > >>> pressure or tapping the ribbon cures the problem, but it can reoccur > >>> again after powering down and powering on. > >>>> > >>>> I plan on opening up the synth to check for a loose ribbon connector > >>> and to clean some contacts. Just wanted to add a reply in case anyone > >>> else searches this topic (like I just did) and is looking for possible > >>> answers. > >>>> > >>>> BTW, the AN1x I just picked up is a mint condition unit. First owner > >>> used it once or twice and then kept it in a closet for the past 10 > >>> years. Everything was in perfect like new condition...synth, power > >>> supply, manuals, box. Software OS version is v1.03. > >>>> > >>>> Cheers, > >>>> -Todd > >>>> > >>> > >>> Gosh, we had threads on this awhile ago... the Ribbon Controller > >>> always seemed a bit unpredictable. > >>> > >>> I think the most common issue was was being able to tap the ribbon > >>> would cause it to 'hold' at that value rather than jump back to the > >>> default value and for others it would not work as advertised. It was > >>> an intermittent thing, and while some of us could reproduce the issue > >>> it was never under the same circumstances as another user, i.e. using > >>> different voices. And it seem to clear after a power on/off cycle. > >>> > >>> Sound likes you've rediscovered this issue. > >>> > >>> Jon > >>> > >>> ---------------------------------------------------------- > >>> > >>> No virus found in this incoming message. > >>> Checked by AVG - www.avg.com > >>> Version: 8.5.409 / Virus Database: 270.13.107/2382 - Release Date: > >>> 09/19/09 06:03:00 > >>> > >>> [Non-text portions of this message have been removed] > >>> > >>> > >> > > > > > > > > > > ------------------------------------ > > > > Community email addresses: > > Post message: AN1x-list@yahoogroups.com > <mailto:AN1x-list%40yahoogroups.com> > > Subscribe: AN1x-list-subscribe@yahoogroups.com > <mailto:AN1x-list-subscribe%40yahoogroups.com> > > Unsubscribe: AN1x-list-unsubscribe@yahoogroups.com > <mailto:AN1x-list-unsubscribe%40yahoogroups.com> > > List owner: AN1x-list-owner@yahoogroups.com > <mailto:AN1x-list-owner%40yahoogroups.com> > > > > Shortcut URL to this page: > > http://groups.yahoo.com/group/AN1x-list > > > > The AN1x Control Synthesizer FAQ:: > > http://www.geocities.com/jondl_2000/an1x_faq/an1x_faq_toc.htm > > Yahoo! Groups Links > > > > > > > > > > [Non-text portions of this message have been removed] > >
Message
Re: [AN1x] Re: Sound problems with AN1x
2010-10-15 by Jeff