LOOKING FOR GOLDSCAN 4 Schematic.

[ivconic]

Hello ivconic
We understand that you can not make any promises. Like Jose says, it is an arduous job.
Throughout this thread people such as Reg, Jose, Max and Geo have posted tips to simplify and improve on the original GS4. Both Max and Reg suggested newer type opamps. Reg highlighted the possibility of removing the need for many of the annoying offset trimmers. Reg also suggested the simplification of the High Low switch. Jose used a two stage preamp using NE5532. He experienced noise with the 5volt supply and replaced 555 with the 7660 like in the hammerhead. Think he also experimented with LM337. Geo highlighted the improvements of others, that can make the GS4 switchable both as Motion or Non Motion machine. Simplifying and modernising this machine could make it a very popular model.

I agree. I would also try to improve it's audio.
Power supply can be replaced with something more better and hopefully less noisy.

[greylourie]

btw... i already "transfered" previous pcb draw into SL5, just to have better control over it and to much more easily perform some checks.
This is just first step in process of drawing new board.
Enjoy:

Hello ivconic
We understand that you can not make any promises. Like Jose says, it is an arduous job.
Throughout this thread people such as Reg, Jose, Max and Geo have posted tips to simplify and improve on the original GS4. Both Max and Reg suggested newer type opamps. Reg highlighted the possibility of removing the need for many of the annoying offset trimmers. Reg also suggested the simplification of the High Low switch. Jose used a two stage preamp using NE5532. He experienced noise with the 5volt supply and replaced 555 with the 7660 like in the hammerhead. Think he also experimented with LM337. Geo highlighted the improvements of others, that can make the GS4 switchable both as Motion or Non Motion machine. Simplifying and modernising this machine could make it a very popular model.

[pigeon]

Thanks Ivconic, please do not feel committed, it is an arduous trabjo.
Here's another PCB, can not remember where I found it.
Maybe someone can tell us if it works or want to experience.
I do not perform this PCB.
José

hi all

this projet work?

thank you

[Jose]

Porkluvr
I think it constestaron your question.
The only files that are able to open the PDF, but these can not be uploaded directly, so we went up the RAR files, such as those received.
Jose

[ivconic]

btw... i already "transfered" previous pcb draw into SL5, just to have better control over it and to much more easily perform some checks.
This is just first step in process of drawing new board.
Enjoy:

[ivconic]

master hunter did the boards in smd... where he is now... where is a result...

Yes very good question!
I am having his files for long time and always wondered about the results.
Same thing also with SD2000 and some other projects we've seen on this forum.

[ivconic]

Jose, I could download and extract individual files from your RAR, but then: the PDF files would not open. And, (by the way) how does one open LBK or LYT files??

Me too. But there is little trick you can do.
Rename those two PDF files and remove all the Turkish letters from their names and than those documents will be opened easily.
Also rename their folders too.
Sometimes Windows and Acrobat are confused because of the non unicode symbols in file name or folder name and can't open some document.
That little trick always works for me, so now i can open and view those pdf's.

[Qiaozhi]

Jose, I could download and extract individual files from your RAR, but then: the PDF files would not open. And, (by the way) how does one open LBK or LYT files??

I was able to open the PDF files without any errors.
The LBK and LYT files are for Proteus PCB - ARES. It seems that these are created as part of the backup process when you try to overwrite an existing layout file. They're probably not needed.

[porkluvr]

Thanks Ivconic, please do not feel committed, it is an arduous trabjo.
Here's another PCB, can not remember where I found it.
Maybe someone can tell us if it works or want to experience.
I do not perform this PCB.
José

Jose, I could download and extract individual files from your RAR, but then: the PDF files would not open. And, (by the way) how does one open LBK or LYT files??

[kt315]

i will try my best to draw

master hunter did the boards in smd... where he is now... where is a result...

[Jose]

Thanks Ivconic, please do not feel committed, it is an arduous trabjo.
Here's another PCB, can not remember where I found it.
Maybe someone can tell us if it works or want to experience.
I do not perform this PCB.
José

[ivconic]

Hello Ivconic.
You played very well what I meant in the previous post, on the issues related to instability in the GS4.
I do not try to make the PCB, because I have not enough experience to take over.
I am willing to build another GS4, if they make the PCB, although the current, it's working reasonably well.
I would ask you please to try.
If anyone cares to experiment, here's one mods for tall drivers I'm rehearsing in, SEL2 mode.
Regards
Jose[ATTACH]27346[/ATTACH]

I hate to promise something and later not to fulfill it, so this time i will not promise, but be sure i will try my best to draw another pcb for GS.

[Jose]

Hello Ivconic.
You played very well what I meant in the previous post, on the issues related to instability in the GS4.
I do not try to make the PCB, because I have not enough experience to take over.
I am willing to build another GS4, if they make the PCB, although the current, it's working reasonably well.
I would ask you please to try.
If anyone cares to experiment, here's one mods for tall drivers I'm rehearsing in, SEL2 mode.
Regards
Jose

[kt315]

thanks Koala.... keeping in archive... I following Eric, what his state... http://www.findmall.com/read.php?34,1959675

Hi Guys,
a friend of mine was at a Rally in England recently and was told that Eric Foster had passed away! Is this a rumor or is it True? Anyone know about this?

Cheers
Al

[Koala]

found a review of the GS2