I get alot of the switches I need for these older keyboards from Mouser.com. In both their catalogs and online they have pictures and measurements of the...
Hi Grant, For the 4 leg switches I used Jameco 153251. There are data sheets available so you can check them for fit. I must have put over a hundred of these...
Jason, Awesome info page! You've been helping me with manuals and info for a while now. Like the Ensoniq VFX-SD... Thank you and please keep up the great work....
I'm on the last few items of a major DX27 restoration. I have a couple of panel switches that don't work and I don't know where to get replacements (in the...
Howdy YBBers, Over the past year or so I've been trying to build a public archive of datasheets and info for synth and soundcard-related sound chips. What I...
SOLVED! Thanks a lot, I changed both of the 1000uf caps for good measure, I had a few laying around, and they're better quality too, rated a bit higher in the...
Hello,  Do you have an oscilloscope? If not then try downloading one of the programs that use the PC sound card as a scope. These programs sample at...
check the voltages to the parts all ic,s like i said what is the votages to these items you still did not give the measurements 15vdc/0v/ -15vdc +5vdc gnd or...
NEW DEVELOPMENT! I started to think outside the synth board itself and immediately disassembled my other working TX81Z. I stuck the working synth board in the...
check polarity between the tracks of the ic10 and the dac as you stated that the old opamp worked but the new one didnot it might be a damaged or craked pcb...
Have you tried a reset from the internal test program? How about shutting off the FX setting? Failing that I would blame a dropped bit in the ops chip....
Well, I'm about to give up. I stuck the new DAC in the TX81Z and... nothing. No change in the sound. Still that annoying static burst. I'm going to change that...
It is bizarre that the old IC works but a replacement doesn't for IC10. It doesn't make sense. Maybe there is a hairline break in the solder for the pins on...
It's really weird how the LED is switched through a transistor from a CPU line??? My take on what it shows is that the power is on. Every DX100 pic I look on...
Thanks for checking. I think I might hook up the LED that the DX100 had. Not sure what it does though. I had to put in a (the) contrast pot for the new LCD. ...
Hi Grant, I fired up my DX27 today after finally finding the Service Manual. Pressing buttons 1 and 2 on power up shows Version 1.1 02-AUG-85. So I can't help...
Hi, (I also posted this in YamahaDX) Does anyone have an EPROM image for v1.2 of the DX27 "OS"? I'm doing a refurb and would like to upgrade it while it's...
check which output is functioning on the dac pin 9 channel1 for 0-5v being analog voltage then check pin 10 ch2 for the 0-5v analog voltage which one is not...
did you check the voltage on the chip incommer it should be between 7-17 vdc it does look like its the dac the second sound channel buffering opamp is not...
I snagged an YM3012 at Andy's Arcade. It's in the UK , and even with the shipping to the US I only paid 9 bucks. What a steal! Hopefully this works....
OK, I changed most of the opamps but the sound is still there. I installed sockets to avoid the headaches of desoldering, so I've been chip swapping all night....
Hi, I'm new to the list, having just picked up a TX802. I updated the ROM to v1.3 found in the files section, but I see there was a v1.5 image posted as an...
Hello, I am interested in your reply to the noisy TX81Z question. I notice that Jameco (an electronic parts mail-order distributor in the USA) has NE5532...
replace the 4558 opamps they are cuasing the noise they are very noisey thats why they are favour by effects pedals which like the hiss distrorted sound you...
Hey all; I got a TX81Z a couple of weeks ago and love it. I am blending it with my analog synth and am getting some awesome bass sounds. My question; Is the...
... Oooh good idea.I know where I can get some (recycling). ... So true. It takes time to learn and maybe money if you need to buy a compiler though. Way more...
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