PBS-TRI "RAM CHIPS" (NEC D431000ACZ-70L) - HELP NE

3 fingers · Post by **3 fingers** » Sun Mar 08, 2009 12:28 am

The difference between the L and the LL SRAM is in the standby power. The LL runs on a fraction of the standby power and seems to be otherwise identical.

But what's the significance of the paper label with the "V - 4"?

If you get a PBS-TRI board and the SRAM from a different sources can you still make them work properly together?

sergiommms wrote:I can now confirm that the double L version of the chip should work ok - I had that kind in my Trinity PRO that I recently sold.

So... I guess both NEC D431000ACZ-70L and NEC D431000ACZ-70LL should do the job. What´s more, from what I gathered, the LL version is readily available from most electronic parts suppliers, as opposed to the single L version.

Photos of the "finding":

pegnafroy · Post by **pegnafroy** » Sun Mar 08, 2009 5:42 pm

Hi:

Jerry Kovarsky asked to one technician that work at Korg USA, and he say that both chips will work with the board.

Now, if any of us have seen a pbs without the chips, then you can buy for a fraction of the cost, since the board need those chips in order to load the factory patches and the flash roms new patches.

To the friend that have try the chips without the pbs board: i've just checked, the chips show me the extra banks without the pbs board. Now, i have the pbs board, and the last thing i think is that the pbs enable the extra bank. So if you put the pbs out of your keyboard, then you'll have the extra banks anyway.

Of course that is more fun have the pbs and the chips.

Desde Santiago de Chile.

Froilán

3 fingers · Post by **3 fingers** » Sun Mar 08, 2009 7:25 pm

But why does one of the SRAM chips have a white label with a code on it is what I'd like to know?

pegnafroy · Post by **pegnafroy** » Mon Mar 09, 2009 7:37 pm

A sticker isn't a standard way to indicate an IC.

My chips doesn't have any sticker. The rule is what is painted on the plastic case.

So, doesn't matter.

Desde Santiago de Chile.

Froilán

galukalock · Post by **galukalock** » Tue Mar 10, 2009 4:24 am

Good news everyone!

I found a PBS-TRI board on eBay, and I bought it. Hopefully we will find out how this works. I think that the PBS board enables the banks.

pegnafroy · Post by **pegnafroy** » Tue Mar 10, 2009 6:28 pm

Hi:

Is a PBS without the chips???

So congratulations, don't matter if it enables the extra banks, you'll have 8MB for sample data.

Cheers.

Desde Santiago de Chile.

Froilán

galukalock · Post by **galukalock** » Tue Mar 10, 2009 8:00 pm

It is a PBS with the chips. So, if my chips are bad, the others should work.

pegnafroy · Post by **pegnafroy** » Wed Mar 11, 2009 2:44 pm

That's make sense.

3 fingers · Post by **3 fingers** » Sat Mar 14, 2009 1:28 pm

galukalock wrote: I found a PBS-TRI board on eBay, and I bought it. Hopefully we will find out how this works. I think that the PBS board enables the banks.

I found one too and installed it this morning. I got the board and the SRAM from different sources. Installation is pretty simple as long as you pay attention and seat the parts in their sockets properly which takes a bit of care. At first I forgot that I needed to do a full reset before the PBS-TRI and SRAM will behave properly so when I powered it up, the Trinity kept freezing up on me when I'd press the Bank button. That was a scare but it's all good now.

Does anyone know if the TFD-1, 2, 3, and 4S files are available anywhere? They didn't come with the card so I'm not sure where to get them now.

galukalock · Post by **galukalock** » Sat Mar 14, 2009 4:43 pm

I installed it just now. I had the same problem as 3 fingers until I did a reset.

Now I have extra room for sounds, finally.

@3 fingers: I think you may be able to find them on the bittorrent sites. I will look there myself later.

3 fingers · Post by **3 fingers** » Sat Mar 14, 2009 6:51 pm

This adds a whole new dimension to an already awesome synth!

pegnafroy · Post by **pegnafroy** » Fri Mar 20, 2009 11:14 pm

3 fingers wrote:
galukalock wrote: I found a PBS-TRI board on eBay, and I bought it. Hopefully we will find out how this works. I think that the PBS board enables the banks.
I found one too and installed it this morning. I got the board and the SRAM from different sources. Installation is pretty simple as long as you pay attention and seat the parts in their sockets properly which takes a bit of care. At first I forgot that I needed to do a full reset before the PBS-TRI and SRAM will behave properly so when I powered it up, the Trinity kept freezing up on me when I'd press the Bank button. That was a scare but it's all good now.

Does anyone know if the TFD-1, 2, 3, and 4S files are available anywhere? They didn't come with the card so I'm not sure where to get them now.

Hi:

http://www.ekomusicgroup.com/esound/pages/home.php

Do a search at download section. Keywords: trinity, pcm, tfd.

Desde Santiago de Chile.

Froilán

3 fingers · Post by **3 fingers** » Sat Mar 21, 2009 7:43 am

Thanks Froilán!

pegnafroy wrote:
3 fingers wrote:
galukalock wrote: I found a PBS-TRI board on eBay, and I bought it. Hopefully we will find out how this works. I think that the PBS board enables the banks.
I found one too and installed it this morning. I got the board and the SRAM from different sources. Installation is pretty simple as long as you pay attention and seat the parts in their sockets properly which takes a bit of care. At first I forgot that I needed to do a full reset before the PBS-TRI and SRAM will behave properly so when I powered it up, the Trinity kept freezing up on me when I'd press the Bank button. That was a scare but it's all good now.

Does anyone know if the TFD-1, 2, 3, and 4S files are available anywhere? They didn't come with the card so I'm not sure where to get them now.
Hi:

http://www.ekomusicgroup.com/esound/pages/home.php

Do a search at download section. Keywords: trinity, pcm, tfd.

Desde Santiago de Chile.

Froilán

zisidisnikos · Post by **zisidisnikos** » Thu May 21, 2009 1:55 pm

hi! i'm Nikos from Greece.
i buy this 2 sram chips only(NEC D431000ACZ-70L) for my trinity v3 for C&D bank and extra 64 preset to M Bank.
i waiting to pick(is ship from U.S to Greece).
but I want to ask:
when I should put the sram.. the first thing before open the power i do will be the reset? ie i open the power to on with the holding ENTER + 0 button with the disk in to the flopy(2 disk with OS 3xxx?
and install again the os Vesrsion 3.xxx?

Timo · Post by **Timo** » Thu May 21, 2009 2:22 pm

zisidisnikos wrote:hi! i'm Nikos from Greece.
i buy this 2 sram chips only(NEC D431000ACZ-70L) for my trinity v3 for C&D bank and extra 64 preset to M Bank.
i waiting to pick(is ship from U.S to Greece).
but I want to ask:
when I should put the sram.. the first thing before open the power i do will be the reset? ie i open the power to on with the holding ENTER + 0 button with the disk in to the flopy(2 disk with OS 3xxx?
and install again the os Vesrsion 3.xxx?

First of all, save everything to floppy disk, all of your PCG data, as you will lose it by doing a factory reset.

Shut down the Trinity, unplug from the mains electrics. Open up the Trinity, ground yourself and the Trinity by briefly touching an earth connection (such as a radiator in your home, if they are earthed). Carefully (and I mean REALLY carefully - those legs are too easily bent) insert the chips into the Trinity's motherboard in the correct orientation (with the indent on each chip pointing inwards).

Close up the Trinity, and hold Enter + 0 when you switch it on. This will wipe the Trinity's memory. You do not have to re-install OS v3.xxx again.

Then take a look to see if you have C & D banks.

As mentioned, if you don't have the PBS board, I'm not sure if the chips will work alone, but it's worth a try.

Korg Forums

PBS-TRI "RAM CHIPS" (NEC D431000ACZ-70L) - HELP NE

Re: NEC D431000ACZ-70L(L)

It works!