Hails Blue! Off the top of my head, here's what to do. I could be forgetting a small detail, but this should work: - Install Total Commander + EnsoniqFS plugin. - Create a virtual disk image ISO the size of a CD, 650MB or whatever. - Use TC/EnsoniqFS to copy your fav banks over to the virtual disk y...

From end to end of the connected batteries and the leads soldered to the board. Also the center post on the adapter input is broke off so I'll need to put a new one in at a later point. When your post said "Casio CZ-101 No Power" I thought that meant the CZ-101 wasn't responding to power, not that ...

Aquila2 wrote:Fresh batteries but only reading 5v at the connections, this might be an issue. Also checked the diodes and are functional.

Can you elaborate on that? What do you mean "at the connections"? What about when you use a 9V DC power plug?

Here's a some basic concepts on how to attack this: Whether or not the batteries or AC adapter are used, there's a common point of the power switch. Since neither batteries nor AC adapter cause the CZ-101 to turn on, we can fairly safely assume (but not certainly) that whatever is wrong is in a part...

I realize this is a bit beside the point, but why are both ROMs identical checksums? I would understand doing something like that for multiple effects processor daughtercards or something, but why for the main CPU? I would have guessed they'd have split the binary into high and low bytes. I don't ge...

I don't have any scientific reason for this suggestion, but have you tried double-size burning the ROM binary to a 27256 EPROM and using that instead of a 27128?

Just a shot in the dark. Very interested in what the source of this issue is.

This probably will not address the actual problem in the thread, but anyone trying to fix one of these will probably land here. So...

Welson Syntex - Service Manual PDF

It looks like the next couple of things in the chain. Does that look/sound correct to you? I would try lifting the output pin of select regulators (or some some other convenient part) to isolate parts of the circuit. That way you can identify what is dropping the voltage. Basically, I'd isolate the...

Okey dokey so I looked super close and there did appear to be a crack between the trace and negative pin pad. I bridged it so L13 is now connected and I am getting 9V across C56 :) Measuring at D56 there is 9V on the input pin but the center pin is at 0V, so I think we found the culprit. Looking at...

Nothing is really ringing out as a ground fault so far so I am looking next toward the transistors and inductors nearby. There's really nothing to check with the inductors because with the power switch off, you should see 9V across C56. If the power switch is off and you don't get 9V there then tha...

looks like the only possible solution is to reload its Firmware which is not available in korgs kegacy website. Any help is welcome What happens when you hold REC + 7 while powering up to enter the service engineer test mode and then check the FLASH ROM? Korg Germany is actually very good and helpf...

Shalebridge wrote:Here is the preliminary new version 1.3. Been using it in my hardware VS for days now.

Stellar post, sir!

Is there any omniflops image for EOS 4.62? (i'm on E-Synth Classic EOS 4.10a and wanted to upgrade. Is the Flashprep for 4.7 good for 4.62 to? Here is the original EOS v4.62 flashprep and update utility for Windows 98/XP and also raw image files for use with Omniflop, OSX/Linux "dd" command, etc. h...

I was slightly bored last night, so I wrote up some repair tips for the Yamaha RX11 - Digital Rhythm Programmer from 1984. Sidenote: Remember when everything was a "drum computer" or "rhythm programmer" and not just a plain old drum machine? :lol: Service Manual First stop for repair jobs, of course...

Rasputin, Super info you posted there! ● V3.0, Feb 28/85 - SN 545235 ● Thank you ;) If you happen to have an EPROM programmer then can you read out V3.0 and share it here? I have 3.1 which I will be sharing in a day or two, so you will be able to update your machine if you have a way to burn your o...