Thanks for the reply! Yes, the FZ is truly a unique sounding synth. Luckily I also have a Fizzle Guts from ALM in my eurorack that will give me the amazing filter for a long time to come I hope. But I'd also like to prolong the life of this Dodo for as long as I can too.Rara wrote: ↑Fri Aug 09, 2019 8:34 amNice to see another working FZ out thereinsoul8 wrote: ↑Thu Aug 08, 2019 2:11 pmHey guys, just came across this thread. Very cool stuff you are doing! Can't wait to see if a viable solution comes out of all this incredible work. I actually have a very nice example of an FZ-1. It's basically in mint condition- it was stored at a university and hardly used. The only issue is the backlight. I of course would love a replacement screen or some kind of retrofit led backlight but my real question is: if i do nothing, is it assured that my FZ-1 will eventually develop the issues that others have had due to the broken backlight? Is it safe to use until I notice any of the other crashing behaviors? I find the FZ-1 totally usable without the backlight in my studio so I'm fine without fixing it for now so long as I'm not doing further damage to it. Adjusting the contrast is the key for me and then I can see everything fine. Thanks!
I would love to see a replacement screen also, (as would many others) due to the truly unique nature of the FZ,
it will be near impossible to make a replacement screen to fit without any modifications
IMO the FZ1 is a Dodo.
There is a big glitch in the FZ1, A non functioning back-light can cause corruption to sample data, don't ask me how, it just does.
Also the inverter for the back-light whines like any other EL back-light synth. best thing you can do for now is disconnect (unplug)
the the back-light. If the screen is still readable without a back-light like a CZ, leave it as is.
This is the explanation I found re: the backlight issue-
If this is correct, which I have no reason to doubt, it sounds like simply unplugging the backlight won't do the trick alone unfortunately. Perhaps someone with more knowledge than I can chime in on this. Otherwise, I might find a local synth repair shop around here to try and help me do this as my screen seems fine without the backlight so long as i can still adjust the contrast.The FZ's and VZ's are renowned for their backlights dying (as are many synths). When the FZ/VZ backlight finally dies, the backlight EL sheet that glows goes high resistance, this causes the backlight power supply inverter (which eventually provides 90V AC to power the EL sheet) to go into oscillation - often a high pitched whine is heard coming from the screen also. This crashes the whole system and it won't boot, the screen is either garbled or nothing showing at all. This is a well known documented fault.
The solution: You need to disconnect the backlight AND also unsolder a tiny voltage step-up transformer mounted on the circuit board (on the FZ-1 it is on the main board - on the FZ10M it may be on the screen board itself). You have to remove or disable the transformer; This is the component that is affected (and the 2 transistors next to it) by the backlight going high resistance.