At 11:09 PM 2/18/2011, you wrote:

Another question

When my oberheim drummer triggers my drum machine, it is quieter than when I press the pads myself. Is this normal I suppose it could be a voltage problem or my midi components wearing down.

It's not a matter of voltage level or worn out parts.
The Drummer is probably sending notes with some default velocity value less than maximum.  Your drum machine responds to the lower velocity value by playing notes more softly.  I don't know if the Drummer has a setting for the velocity, but if you are able to crank it up, you should be able to get your drum machine to play louder.

--- In oberheim@yahoogroups.com , "sokkerkid10101" <sokkerkid10101@...> wrote:
>
> Oh god I hope not...those were the crappiest solder joints; I am surprised it even turned on. But it did!
>
> --- In oberheim@yahoogroups.com , Martin Ator <cyllall@> wrote:
> >
> > Well done. You will be building your own synthesisers next.
> >
> >
> >
> >
> > ________________________________
> > From: sokkerkid10101 <sokkerkid10101@>
> > To: oberheim@yahoogroups.com
> > Sent: Tue, 15 February, 2011 7:29:06
> > Subject: [oberheim] Re: Oberheim Perf/x Drummer problem
> >
> >
> > Fixed! Replaced voltage regulator
> > thanks
> >
> > --- In oberheim@yahoogroups.com , "sokkerkid10101" <sokkerkid10101@> wrote:
> > >
> > > Anyone happen to know the voltage/amps/current of the perf/x unit's power
> > >adapter
> > >
> > > thanks
> > >
> > >
> > > --- In oberheim@yahoogroups.com , Martin Ator <cyllall@> wrote:
> > > >
> > > > There's some test points on the PCB near the Intel CPU. +5 and GND. You can
> > > > check the function of the regulator here and monitor any changes in voltage.
> > > > The PC900 could cause midi problems. According to the datasheet the LED
> > >that's
> > >
> > > > inside the PC900 decreases in luminosity by 50% after 5 years of use. You
> > >could
> > >
> > > > possibly test the Midi by using Midi thru socket instead of the Midi in(if it
> > >
> > > > has a midi thru socket) Try a sysex dump out and send it back in with the
> > >midi
> > >
> > > > in port to test that if it doesn't work properly try the thru. I don't know
> > >if
> > >
> > > > the cyclone has a verify sysex function. You should use that and not load
> > > > directly into memory if poss. You could maybe change the Midi in 220 ohm
> > > > resistor (R4 )to 150 or 120 ohm.
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > ________________________________
> > > > From: sokkerkid10101 <sokkerkid10101@>
> > > > To: oberheim@yahoogroups.com
> > > > Sent: Sat, 29 January, 2011 9:42:30
> > > > Subject: [oberheim] Re: Oberheim Perf/x Drummer problem
> > > >
> > > >
> > > > Read through some other google links
> > > > do you think it could possibly be the photocoupler (pc900)
> > > > I will also start testing the regulator, since that
> > > > is what some have claimed to cause them problems. It's not
> > > > the power supply and all solder points and resistors look good...
> > > >
> > > > --- In oberheim@yahoogroups.com , "cyllall" <cyllall@> wrote:
> > > > >
> > > > > I'm looking at some pictures of a Cyclone I found online as I don't have
> > >any
> > >
> > > > >Perf/x stuff.
> > > > >
> > > > > Check that all the legs in any socketed chips are actually in the socket.
> > >It is
> > >
> > > > >possible when putting a chip in, to bend the legs back on themselves in a
> > >"U"
> > >
> > > > >shape and it looks like they are in and they're not.
> > > > > There may be something wrong with your display showing 3 instead of 8.
> > > > > You can check for cracked solder or a short circuit by the
> > >display/resistors
> > >
> > > > >and underneath.
> > > > > This could be a power supply problem.
> > > > > You need to check the +5v and GND test points on the board.
> > > > > If you clip a crocodile clip to the regulator(as a heatsink) and it then
> > >takes
> > >
> > > > >longer to go funny then it could be the regulator.
> > > > > Make sure your power adapter is the correct voltage and unless it's the
> > >same
> > >
> > > > >mah rating as the original(or is the original) it should be a
> > >regulated/switched
> > >
> > > > >mode supply, so as not force too much current in.
> > > > > I would take the battery out for now as it could hold corrupted data in the
> > >
> > > > >RAM.
> > > > > Wait a few minutes and do a hard reset.
> > > > >
> > > > >
> > > > >
> > > > > --- In oberheim@yahoogroups.com , "sokkerkid10101" <sokkerkid10101@> wrote:
> > > > > >
> > > > > > narfman96:
> > > > > > No nothing seems to be getting too hot but that seems like a very logical
> > >
> > > > >possibility and would explain why there is a delay for it reverting to a
> > >state
> > >
> > > > >of 0 ram, maybe the bad component is dealing with the ram
> > > > > >
> > > > > > Martin:
> > > > > > The original battery was a DL2032, I tore that out and have in it now a
> > > > >CR2032. The original ram (8k one)is# made by hyuandai, I replaced it with a
> > >32k
> > >
> > > > >of HM62256LP-10.
> > > > > >
> > > > > > One thing to note is that when the version displays on startup, it says
> > >3.3,
> > >
> > > > >although the manual says it should be at least 3.8
> > > > > >
> > > > > > Yes the CPU (and the ROM for that matter) both appear to be in correctly
> > > > > >
> > > > > > Yes there is only one ram chip
> > > > > >
> > > > > > And yes I have access to a voltmeter (and one of those displays that show
> > >
> > > > >current and stuff-i know I sound like an idiot, I can't remember the name of
> > >
> > > > >them right now) I am not keen on circuitry however
> > > > > >
> > > > > >
> > > > > > Thank you
> > > > > >
> > > > > > --- In oberheim@yahoogroups.com , "narfman96" <narfman96@> wrote:
> > > > > > >
> > > > > > > This problem sounds like a component is overheating and shutting down.
> > >A
> > >
> > > > >capacitor could be leaking to ground. Have a tech look at the power circuit
> > >and
> > >
> > > > >then the cpu and the rest of the digital section. Is anything getting warm
> > >or
> > >
> > > > >hot
> > > > >
> > > > > > > Fran
> > > > > > > --- In oberheim@yahoogroups.com , Martin Ator <cyllall@> wrote:
> > > > > > > >
> > > > > > > > Hi,
> > > > > > > > What type of battery is it CR2032
> > > > > > > > What is the part number of the original RAM, is it something like
> > >this on
> > >
> > > > >the
> > > > >
> > > > > > > > end ******-15L
> > > > > > > > Have you identified the CPU, is it in a socket, is there only one RAM
> > >
> > > > >chip, have
> > > > >
> > > > > > > > you got a voltmeter
> > > > > > > >
> > > > > > > > Martin
> > > > > > > >
> > > > > > > >
> > > > > > > >
> > > > > > > >
> > > > > > > > ________________________________
> > > > > > > > From: sokkerkid10101 <sokkerkid10101@>
> > > > > > > > To: oberheim@yahoogroups.com
> > > > > > > > Sent: Sat, 22 January, 2011 12:17:01
> > > > > > > > Subject: [oberheim] Re: Oberheim Perf/x Drummer problem
> > > > > > > >
> > > > > > > >
> > > > > > > > Thank you for the reply and info about the battery
> > > > > > > >
> > > > > > > > I put a 32k ram chip in there but the problem still persists. However
> > >I
> > >
> > > > >believe
> > > > >
> > > > > > > > the problem is due to something with the RAM since I get the same
> > > > >messages when
> > > > >
> > > > > > > > there is no RAM chip in it; except it takes a few moments to occur
> > >when
> > >
> > > > >there is
> > > > >
> > > > > > > > a chip in it.
> > > > > > > >
> > > > > > > >
> > > > > > > > Any other help would be appreciated, I can make a video if needed.
> > >Also
> > >
> > > > > > > > considering taking it to a pro...
> > > > > > > >
> > > > > > > > --- In oberheim@yahoogroups.com , "Steve" <steve@> wrote:
> > > > > > > > >
> > > > > > > > > The battery keeps the data in the RAM alive. Without it, it would
> >
> > > > >revert back
> > > > >
> > > > > > > > >to factory
> > > > > > > > > settings when you shut off the power. Today we would use Flash
> > >memory
> > >
> > > > >for
> > > > >
> > > > > > > > >this, but battery backed RAM was one of the better options back
> > >then.
> > > > > > > > >
> > > > > > > > > As far as curing what ills your drummer, I can only suggest
> > >reseating
> > >
> > > > >anything
> > > > >
> > > > > > > > >that is socketed, in case oxidation is making a bad connection
> > > > >somewhere.
> > > > > > > > >
> > > > > > > > > --> Steve
> > > > > > > > >
> > > > > > > > > --- In oberheim@yahoogroups.com , "sokkerkid10101" <sokkerkid10101@>
> > >
> > > > >wrote:
> > > > > > > > > >
> > > > > > > > > > Hey all, first of all- hi
> > > > > > > > > > I was running out of options until I found this wonderful group!
> > > > > > > > > >
> > > > > > > > > > Secondly,
> > > > > > > > > > I just purchased an oberheim drummer off ebay and it started
> > >giving
> > >
> > > > >me
> > > > >
> > > > > > > > >problems immediately. The issue is that, if I let it sit and rest
> > >for a
> > >
> > > > >bit, it
> > > > >
> > > > > > > > >starts up fine and works great, until after about 1-3 minutes when
> > >all
> > >
> > > > >of the
> > > > >
> > > > > > > > >function become inaccessible. AKA it shows "0" for preset, and it is
> > >
> > > > > > > > >unchangeable, as well as all other functions show "oF" and I cannot
> >
> > > > >change it.
> > > > >
> > > > > > > > >This will happen immediately if I just switch it from on to off.
> > > > > > > > > >
> > > > > > > > > > I have it opened up here (got scared that I had destroyed it on
> > >one
> > >
> > > > >or two
> > > > >
> > > > > > > > >occasions while playing with the ram and eprom). I am trying a new
> > > > >battery but i
> > > > >
> > > > > > > > >don't have my soldering iron here at school so it is just sitting
> > > > >between the
> > > > >
> > > > > > > > >tabs.
> > > > > > > > > >
> > > > > > > > > > what does the battery do btw
> > > > > > > > > >
> > > > > > > > > > And I have a new 32K X 8 ram on its way.
> > > > > > > > > >
> > > > > > > > > > Any other suggestions
> > > > > > > > > >
> > > > > > > > > > Thank you!
> > > > > > > > > >
> > > > > > > > >
> > > > > > > >
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
>