Re: Hello World and a weird problem
2007-12-19 by essboyer
Hey thanks a lot synthmdl76. That s not a bad idea. So using a 7408 as opposed to the 74LS08 is fine? I didn t think they should be too different. The other
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Re: Hello World and a weird problem
2007-12-19 by synthmdl76
I would replace both those 7408s in that area. the chips I used are nte7408. dont under etimate the power of the dark side (aka bad traces) I scratched all
Hello World and a weird problem
2007-12-19 by essboyer
Hi everyone! Just got into the exciting world of PolySix yesterday, when I was given two p6 s for free! One is in great shape, though suffered some battery
RE: [PolySix] Anyone have any black keys for sale?
2007-12-18 by Jose Pereira
If the keys from the Poly 61 fits on the polysix I have a lot of them to sell. Best regards José Portugal _____ From: PolySix@yahoogroups.com
Re: Polysix randomly changes parameter settings.
2007-12-18 by synthmdl76
I found out that IC 1 pin 3 (the data pin) on the 370 board reads -2.3 and before it warms up. that as it warms up and I can hear the cutoff open, the voltage
Re: Polysix randomly changes parameter settings.
2007-12-17 by synthmdl76
Thanks for the awesome response... I just did a lot more soldering. So far im not getting the random cutoff and the parameters seem good and solid. Their is
Anyone have any black keys for sale?
2007-12-17 by synthmdl76
let me know. Thanks
Re: Polysix randomly changes parameter settings.
2007-12-14 by synx508
... The fun thing about the battery leakage problem is that it can do many different things. The SIL pullup resistor near IC30/31 can go open circuit for
Re: Polysix randomly changes parameter settings.
2007-12-14 by synthmdl76
dinked around with D/A adjustment (page 19 of service manual). when I switched the switch (SW1) from normal to test and did as the service manual states,
Re: Polysix randomly changes parameter settings.
2007-12-13 by synthmdl76
Sorry I meant board 367 not 376 Im checking the TP voltages righ now, then im testing the RESET. If I move VR1 when the cutoff is jumping that seems to effect
Re:[PolySix] Re: Polysix randomly changes parameter settings.
2007-12-13 by erema@libero.it
Hi Gil, I inform you that I made the payment Ciao Emidio
Re: Polysix randomly changes parameter settings.
2007-12-13 by gil_we
can you see any battery leakage ? ... was
Re: Polysix randomly changes parameter settings.
2007-12-13 by synthmdl76
Update, Ive narrowed it down to the VCF section of parameters. I disconnected connector 1 (on board 376) This disabled the VCF and EG params. (As i can still
Re: [PolySix] Polysix VCF and EG only functions NOT working.
2007-12-12 by Chromatest J. Pantsmaker
You probably cleaned off some bad traces that were only conducting through the oxidized corrosion stuff. Look for those traces and replace them. Good luck!
Re: Polysix VCF and EG only functions NOT working.
2007-12-12 by synthmdl76
wiggle the connectors. Then dL the schematics and learn the thing inside out. that is what Im doing. Isnt working on these beast fun ;- I almost forgot I
Re: [PolySix] Circuitwriter pen to repair traces?
2007-12-12 by Johannes Hausensteiner
I use a similar thing when soldering is not possible, e.g. on flex-PCBs or the like. I agree with one poster who says that it can be difficult to draw the
Re: Circuitwriter pen to repair traces?
2007-12-12 by scottboardway
Thanks so much for the help guys. I guess I have to try this the old fashioned way. ... repaired ... and ... pen ... index.jsp? ...
Re: [PolySix] Circuitwriter pen to repair traces?
2007-12-12 by klosmon
Also, don t overlook the damaged thru-holes, which cannot be repaired by a circuit pen. ... No virus found in this outgoing message. Checked by AVG Free
Re: [PolySix] Circuitwriter pen to repair traces?
2007-12-12 by steven pistrich
I have used one for other repairs...my complaint about the pen is that the ink line can be fat and blobby compared to a fine trace , and wire can be very thin
Re: [PolySix] Circuitwriter pen to repair traces?
2007-12-12 by drfuzz@aol.com
Seriously.. the only effective way to deal with the acid-damaged traces in a Polysix is to eradicate them.? Anything else is just asking for trouble.? Think of
Circuitwriter pen to repair traces?
2007-12-12 by scottboardway
One more quick question. Has anyone tried using the circuitwriter pen http://www.radioshack.com/product/index.jsp?productId=2104395 to repair damaged traces?
Polysix VCF and EG only functions NOT working.
2007-12-12 by scottboardway
Any help would be more than greatly appreciated. I recently bought a non working Polysix figuring the obvious. I opened it up and removed the varta battery
Re: 1 OCT vs 2 OCT
2007-12-11 by dizz662000
Hi Math, It s very obvious. With those settings, going from 1 OCT to 2 OCT should drop down an octave. Sounds like you have a problem. You might try cleaning
Re: [PolySix] 1 OCT vs 2 OCT
2007-12-10 by jure zitnik
it could be a battery leak problem, i had this switch malfunctioning as well. jure
Re: Polysix midikit
2007-12-10 by mathroutine
thanks for this link
1 OCT vs 2 OCT
2007-12-10 by mathroutine
how obvious is the difference between the 1 OCT and 2 OCT setting? When I have only the sub osc playing (PW all the way to the right) I can t hear the
Re: [PolySix] Polysix midikit
2007-12-09 by amber@acc.umu.se
Actually, the pitchbend-option is not that good. Stepping, but that probably due to it s a PICprocessor-driven application... /Kristofer Ulfves, Uppsala,
Re: [PolySix] Re: botched trace repair?
2007-12-09 by jure zitnik
don t get too excited but there could be another explanation: the last (and like 3rd) time i decided to repair my polysix i found something really funny. i
Re: [PolySix] Polysix midikit
2007-12-09 by jure zitnik
wow, not just that but also pitch wheel! and some other stuff as well... really good find, if i hadn t midified mine yet, i d definitely go for this one. jure
Re: P6 Programmer going up?
2007-12-08 by synthmdl76
Im actually thinking of getting some of that stuff in a spray can that blows frezzing cold air so I can shoot it on the memory board to see if its a chip. btw
Re: P6 Programmer going up?
2007-12-08 by synthmdl76
I know this is a old message but my p6 does this to. after the p6 is on for about 5 minutes it works fine, but until it warms up, the patch will start getting
Re: [PolySix] Why scrape the bad traces?
2007-12-07 by Chromatest J. Pantsmaker
Well, it s an interesting effect that baking soda has... from what I ve read, it will neutralize an acid or a base and produce different end products for each.
Re: [PolySix] Why scrape the bad traces?
2007-12-07 by robin.b2@ukonline.co.uk
... Surely the issue here is that NiCd batteries actually have an alkali electrolyte, not acid.... maybe the stuff that leaks out is actually acidic but I
Polysix midikit
2007-12-07 by amber@acc.umu.se
Hi all! Just wanted you to know about a midikit for the Polysix that I orded from CHD Electroservice, a small firm in Prague, Czechoslovakia. Its operation is
Re: [PolySix] Why scrape the bad traces?
2007-12-07 by Sam Larch
Anybody got an untainted 367a for sale?
Re: [PolySix] Re: Why scrape the bad traces?
2007-12-06 by steven pistrich
I had that idea and did that on my polysix...a bakingsoda wash to clean the battery area, but I cant say it stopped anything from eventually getting
Re: [PolySix] Re: Why scrape the bad traces?
2007-12-06 by Chromatest J. Pantsmaker
Technically, you d need something basic to neutralize the acid. Alcohol is a good thing to clean an area and dissolve solids and wash them away. Of course,
Re: Why scrape the bad traces?
2007-12-06 by synthmdl76
I wiped the area good with rubbing alcohol multiple times. ... cleaning ... acid ... wasteking1 ... synthmdl76 ... remove the ... spread ... BETTER... ...
Re: [PolySix] Re: Why scrape the bad traces?
2007-12-04 by Sam Larch
Can the acid permeate through the middle of the board? Such that cleaning the surfaces would be futile? Incidentally, what is the best method for cleaning
Re: Why scrape the bad traces?
2007-12-04 by gil_we
The acid spreads everywhere in the area, you have to clean it all up when fixing the bad traces.
Re: [PolySix] Why scrape the bad traces?
2007-12-03 by Chromatest J. Pantsmaker
Two reasons... Unless you cut out all the cancer, it will continue to spread. Even though it might just look like a dead trace, it might be bridging to a trace
Re: Why scrape the bad traces?
2007-12-03 by wasteking1
... I have wondered this myself...everyone said that the acid would spread further eventually. In my own case, i did just jump wires at first...everything
Why scrape the bad traces?
2007-12-03 by synthmdl76
Cant you just run jumper wires to the need contacts and leave the damaged traces? I dont see why time needs to be taken to remove the balcken d area.
Re: hello from Finland!
2007-12-02 by synthmdl76
... so what happened?
Re: external click input level
2007-11-29 by dizz662000
Don t blow it up dude! The arpp. input accepts an s-trig gate signal. It s not an audio input. It syncs the P6 s arpp. clock to external devices, typically
external click input level
2007-11-22 by mathroutine
Hello everyone. I just bought a polysix its amazing! Its my first analog synth, what a pleasure. My question to you, does it matter what the level of the
Re: [PolySix] Re: botched trace repair?
2007-11-19 by klosmon
It sounds like you ve reached the point where a scope is necessary for any meaningful work -- this will help you zero in on the problem areas, and is a much
Re: botched trace repair?
2007-11-19 by spistrich
well, i replaced all the bad traces, put in a socket for the IC31 and a new IC31 that had never been heated/soldered into the socket, established all
Re: [PolySix] botched trace repair?
2007-11-14 by klosmon
... Well, I answered that question a few days ago -- see message #1692. That answer contains good and true information, based on having repaired about forty
Re: [PolySix] botched trace repair?
2007-11-14 by STEVEN PISTRICH
My thoughts exactly, ive already ordered the IC AND a socket... ( parts cost under $2) that way i dont have to heat the IC at all....But I still wonder what