[sdiy] Weird JX3P midi behavior

[Travis Thatcher]

Hi Grant,

Got the roms in the mail today and the A4 ROM did the trick!

Thanks a ton. I would like to install the DROM chip however only user
instructions were included, not anything about the wiring changes you
mentioned. Could you let me know what those are when you get a chance?

Thanks again. ccing the list on this - thanks everyone for your help.
I guess when the battery was completely drained - as it was when i got
the synth - it corrupted the EPROM.

-T

On Tue, Nov 27, 2012 at 9:11 PM, Travis Thatcher <recompas at gmail.com> wrote:
> That rules, thanks so much!
>
> On Tue, Nov 27, 2012 at 9:08 PM, MTG <grant at musictechnologiesgroup.com> wrote:
>> Hi,
>>
>> I sent both versions of the chip. Assuming your synth is version A4 (by far
>> the most common), you can drop the replacement in to test. Then when you get
>> more time you can do the DROM. It requires minor changes to the wiring
>> (instructions included).
>>
>> GB
>>
>>
>> On 11/27/2012 2:06 PM, Travis Thatcher wrote:
>>>
>>> I replaced the battery when I got the synth, as the old one was
>>> completely toast, possibly corrupting the EPROM?  This was only like 3
>>> months or so ago and the battery is still at 3.17v and patch retention
>>> is working fine.
>>>
>>> On Tue, Nov 27, 2012 at 4:03 PM, MTG <grant at musictechnologiesgroup.com>
>>> wrote:
>>>>
>>>> Got it.  Have you checked the battery voltage? Things get a little wonky
>>>> when the RAM retention voltage is too low...
>>>>
>>>>
>>>>
>>>> On 11/27/2012 1:49 PM, Travis Thatcher wrote:
>>>>>
>>>>> That sounds good. I've pretty much exhausted everything up to the
>>>>> signals headed to the main board.  Its either the circuitry
>>>>> surrounding the cpu, or the eprom....i think.  Anyway, $15.15 coming
>>>>> your way via paypal. Its certainly worth a shot.
>>>>>
>>>>> My shipping is:
>>>>> Travis Thatcher
>>>>> 2538 W Haddon Ave
>>>>> Apartment 2R
>>>>> Chicago, IL
>>>>> 60622
>>>>>
>>>>> Thanks,
>>>>> Travis
>>>>>
>>>>> On Tue, Nov 27, 2012 at 3:46 PM, MTG <grant at musictechnologiesgroup.com>
>>>>> wrote:
>>>>>>
>>>>>> $5.15 ... I use those priority mail boxes.
>>>>>>
>>>>>> I haven't really been following your issue(s) very closely. I chimed in
>>>>>> on
>>>>>> something Florian said. He's pretty knowledgeable about the 3P.
>>>>>> Anyway,
>>>>>> you
>>>>>> can Paypal me here if you want and I can send it out next day.
>>>>>>
>>>>>> GB
>>>>>>
>>>>>>
>>>>>>
>>>>>> On 11/27/2012 1:43 PM, Travis Thatcher wrote:
>>>>>>>
>>>>>>> I'd be into buying a DROM from you if that is an option. My ROM is
>>>>>>> socketed (IC52). Nothing else is socketed unfortunately.  I'm located
>>>>>>> in Chicago. What would shipping be to area code 60622 (USA)?
>>>>>>>
>>>>>>> Thanks,
>>>>>>> T
>>>>>>>
>>>>>>> On Tue, Nov 27, 2012 at 3:30 PM, MTG
>>>>>>> <grant at musictechnologiesgroup.com>
>>>>>>> wrote:
>>>>>>>>
>>>>>>>> If you were going to buy a chip, you might want the later (DROM)
>>>>>>>> versus
>>>>>>>> the
>>>>>>>> earlier A4 chip, but I can understand if you want to try something
>>>>>>>> that's
>>>>>>>> socketable so it's easy to see if it has any effect.  Where are you
>>>>>>>> located?
>>>>>>>> I sell EPROMs for $10 a shot plus shipping.  If your CPU is in a
>>>>>>>> socket
>>>>>>>> that
>>>>>>>> is also easy to check... and pretty cheap too.
>>>>>>>>
>>>>>>>> GB
>>>>>>>>
>>>>>>>>
>>>>>>>> On 11/27/2012 11:50 AM, Travis Thatcher wrote:
>>>>>>>>>
>>>>>>>>> Would buying this be worth a shot, or would this not have anything
>>>>>>>>> to
>>>>>>>>> do with the midi functionality?
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> http://www.ebay.com/itm/121025089455?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2648
>>>>>>>>>
>>>>>>>>> On Tue, Nov 27, 2012 at 1:04 PM, MTG
>>>>>>>>> <grant at musictechnologiesgroup.com>
>>>>>>>>> wrote:
>>>>>>>>>>
>>>>>>>>>> The Roland DROM for the JX3P uses a different MIDI Channel. Channel
>>>>>>>>>> 13
>>>>>>>>>> if
>>>>>>>>>> memory serves...
>>>>>>>>>>
>>>>>>>>>> GB
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> On 11/27/2012 9:11 AM, Florian Anwander wrote:
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> Also: If the JX-3P is set to Omnimode off. Then you have to send
>>>>>>>>>>> with
>>>>>>>>>>> MIDI-Channel 1
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> Florian
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> _______________________________________________
>>>>>>>>>> Synth-diy mailing list
>>>>>>>>>> Synth-diy at dropmix.xs4all.nl
>>>>>>>>>> http://dropmix.xs4all.nl/mailman/listinfo/synth-diy
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>
>>>
>>>
>>
>
>
>
> --
> http://www.travisthatcher.com
> http://www.soundcloud.com/travisthatcher
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