thanks Quentin and Tim,
just to be clear,
My synthech did the replacement of the main IC,
i didnt have the skill at the time to jump into that one.
It was mostly the unsoldering of the roland chip that had me nervous,
i didnt think i could do it without damaging the pcb or traces.
the chip replacement i was talking about above was the 4051 at ic4,
which is just a little 16pin chip, was pretty easy.
The upgrade has worked like it is supposed to, i just cant seem to get
the sens slider to do anything it is supposed to, and it is sending
out voltages, i checked that with a meter.
so we are going through a process of elimination to determine the problem.
The weird thing is, the 3p was fully functional before the upgrade.
anyways, we are now looking at a possible bad lm311 at ic20.
I was lucky to have an extra 4051 from some yusynth random gates i am building,
however, i am having trouble locating an lm311 (i think itts a
comparater) locally, looks like im going to have to order one online.
cheers
douglas
On 7/25/12, Tim Batson <
tim.batson@...
> wrote:
> Great advice Quentin! I didn't think of using a magnifying glass!
> Instead I used my multimeter and tested all the legs from the CPU
> mount (not the kiwitechnics chip) and the traces to the PCB. Warning,
> don't push too hard with your multimeter pin or you might break the
> trace. Using a steady, firm, patient hand will get you there with out
> any trouble. You'll need to test underneath and on top because the
> PCB is double sided!
> I suggest fully removing the PCB so you can give it a full inspection.
>
> Second to that, I went ahead with the PG300 mod, although I'm not
> using one, I thought it best to follow Murray's instructions to the
> letter. You will need to change the position of the switch on the
> back to Programmer, this is different to the Roland factory spec you
> might be used to.
>
> I had a similar problem too because I was trying to program from the
> original kiwi diagram V1 not the new V2 one (use the latest manual).
> These instructions from Murray helped me unlock the programming:
>
>
>>>>>>>>> press and release the group A button. Do not hold it.
>>>>>>>>>
>>>>>>>>> No, you can reload the update but it should not be required.
>>>>>>>>>
>>>>>>>>> - MH
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> On 4/03/2012 9:30 p.m., Tim Batson wrote:
>>>>>>>>>>
>>>>>>>>>> It's the Group A button that isn't working, it doesn't light
>>>>>>>>>> up. So I can't even get into editing sounds, I don't think.
>>>>>>>>>>
>>>>>>>>>> Just to confirm, to edit a voice I have it switched to
>>>>>>>>>> Programmer mode then I hold Group A and then toggle through
>>>>>>>>>> Bank A, B, C, D and then press A twice for AA etc.? When I
>>>>>>>>>> do this the slider picks up the edit's from the slider and
>>>>>>>>>> write lights up but I can't hear any changes to the
>>>>>>>>>> parameters.
>
>
> This is the procedure I wrote for myself afterwards for editing a patch:
> Go into edit mode press and release Tape, then press and release Group
> A, toggle through banks A-D and edit numbers 1-16 depending on the
> parameter you wish to edit. Pressing bank A twice will take you to AA
> etc.
>
> Good luck Douglas, its brave of you to tackle a project like this for
> your first SDIY!
>
>
> On 26/07/2012, at 4:01 AM, Quentin de Lorenzis wrote:
>
>>
>> Check all the tracks coming from your chip. I thought I had done a
>> good job replacing the IC but upon Close inspection with a
>> magnifying glass I had blown out 2 tracs, so I hard wired them and I
>> was working again. Q
>>
>> From: douglas benner <
greenshoos@...
>
>> To:
kiwitechnics@yahoogroups.com
>> Sent: Wednesday, July 25, 2012 11:21:10 AM
>> Subject: [kiwitechnics] Re: 3p trouble
>>
>>
>> Oh,
>> i should mention that we dont think its actually the sens slider
>> that is bad,
>> we put a meter on it and it seems to be doing its thing ok, sending
>> out voltages when moved about.
>> d
>>
>> On 7/25/12, douglas benner <
greenshoos@...
> wrote:
>> > Hi folks,
>> > im having trouble with my 3p with the kiwitechnics upgrade,
>> > while murray has been incredibly patient and helpful,
>> > i thought id email the group too so as not to burden him so much
>> with this.
>> > after problems with installation and figuring that stuff out,
>> > ive finally got the upgrade working, but i have no action form my
>> sens
>> > slider.
>> > we diagnosed it as possibly being a faulty 4051 at ic4,
>> > just replaced that, still having the same issue.
>> > Im pretty sure its the sens slider, cuz everything else seems to be
>> > working,
>> > (except the bend lever, will tackle that later)
>> > i just cant edit patches, nor does it change the speed of the
>> chorus.
>> > any suggestions where to go next?
>> > im very new to sdiy, this was actually my first real repair, and it
>> > went swimmingly by the way!! (replacing the chip, that is) love that
>> > flux!!!
>> > thnx
>> > douglas
>> >
>>
>>
>>
>>
>
>