Hi Jonny, The power supply is the entire circuit board on the left side of the TX81Z (the smaller one). You should never touch anything on that board while the...
1118
jonnybutler482
Apr 2, 2012 8:49 pm
Thank you for the very specific advice! In the next couple of days, I will have some time to open it up and test it. I have a feeling that the capacitors...
1119
Alan Probandt
alan_probandt
Apr 3, 2012 12:07 am
Be sure to download the schematic for the TX81Z from the files section here. The caps most likely to need replacement are the three to the left of IC1, IC2,...
1120
jonnybutler482
Apr 4, 2012 1:52 am
I took a look at the board tonight and it seemed that the voltage completely dropped when I did the testing. Nothing seemed hot or overheating. I am going to...
1121
narfman96
Apr 4, 2012 2:52 am
Are you sure you don't have a bad cord or a cracked solder joint. The power should not just go away???? Something in the power input area is breaking the...
1122
jonnybutler482
Apr 4, 2012 2:36 pm
Hmmm...I can do that too (check for cracks in the tracings). What's strange about the issue is that it can be reproduced. After I power the TX81Z on, the...
1123
narfman96
Apr 4, 2012 5:36 pm
Yes, with the unit unplugged use the resistance (ohmmeter) function and test for 0 ohms. You can check the cord with alligator clips and jump rope with the...
1124
cooptrol
Apr 8, 2012 7:45 am
Hi everyone! I purchased a mint TX81z, but the display looks too bright and without contrast. It's hard to read the parameters. Is there any way of adjusting...
1125
narfman96
Apr 8, 2012 4:36 pm
Hi Coop, I don't think there is a sysex message that can control the contrast since it is hardwired in the circuit. Check out the TX81Z schematic here in the...
1126
cooptrol
Apr 8, 2012 9:39 pm
Thank you very much for your detailed response. I guess it's too much for me, I won't get into soldering and testing, I may as well break it.. The display is...
1127
cooptrol
Apr 14, 2012 9:35 am
This genius from Japan has made a plugin in Max For Live which emulates perfectly the TX81z. But you may ask, why would I need a plugin when I have the real...
1128
jonnybutler482
Apr 14, 2012 4:53 pm
Alan, I have replaced the 3 capacitors per your recommendation and so far everything seems ok. It's not shutting off like before, so that's a good sign,...
1129
jonnybutler482
Apr 14, 2012 5:12 pm
Thanks for posting about this! I discovered this one too but have been too busy fixing the TX81Z to use it. This application is the only one that has worked...
1130
jammie
jammie.emma
Apr 14, 2012 5:24 pm
+/- 15% is the usual working rates so -15.22 is well with in this ratio its the ripple thats the problem if it was fluctating -15 to -15.22 AND BACK AGAIN...
1131
jonnybutler482
Apr 16, 2012 1:33 am
Well, after using it for a day, it shut off and rebooted. It's as if the problem came back, but it is now a very very intermittent problem, so the replacement...
1132
Royce
rpcfender
Apr 16, 2012 2:41 am
Expressive FM Application by the late Sal Gallina. Does anyone have a copy of this book? It came with a cassette with the patches on it for TX81z. I would love...
1133
Renata Dokmanovic
renatadokman...
Apr 16, 2012 8:28 am
Not long ago: http://launch.groups.yahoo.com/group/YamahaDX/message/11756  Maybe you can ask rawl47 about this, via pm.   rianna doemaata  ...
1134
Nicola Di Vito
drugo_37
Apr 16, 2012 9:39 pm
Y am very interested from this post and Yshould try the Max For Live TX81z plugin but Y have not clear if Y can use it; Y have Max 6 registered but Y don't own...
1135
Hernan Gonzalez
cooptrol
Apr 16, 2012 9:49 pm
In this page you will find a standalone version of Opfour, that doesnt need Ableton: http://www.audiooo.com/jp/software/index.html Enjoy! [?] -- ...
1136
raradna@...
rrad500
Apr 17, 2012 7:30 pm
Hey all, Anyone out there ever tried to figure out if there are certain values of the LFO speed setting on a dx7 where they sync to a particular bpm/bpms?...
1137
Niklas Nisbeth
niklasni1
Apr 17, 2012 7:59 pm
The obvious answer would be to use your ears, of course... But: Hz = Beats per second. Try making a noise where you can see the effect of the LFO on the...
1138
raradna@...
rrad500
Apr 17, 2012 8:11 pm
Hey all, Anyone out there ever tried to figure out if there are certain values of the LFO speed setting on a dx7 where they sync to a particular bpm/bpms?...
1139
Inner Loop
blackwoodtebo
Apr 17, 2012 8:21 pm
http://www.wiseguysynth.com/larry/convert/bpm_table.htm there are tons of bpm to ms or HZ converters out there. Just google bpm to ms or bpm to Hz...
1140
Loscha
kobanogomi
Apr 17, 2012 10:06 pm
I've never come across anyone who has done it. There aren't really tables in any of the manuals that do this. There are so many different models of FM, it's...
1141
charlie 'chop'...
charleschop
Apr 17, 2012 11:38 pm
OSCILSCOPE SHOULD MAPP IT OUT HA , MAYBE pmod WILL HAVE AN OVER ALL EFFECT. ??? WHO KNOWS , I DON'T IT PROBALLY IN SOME OBSCURE HIDDEN MICRO PROCESSOR USER...
1142
Daniel Forró
danforcz
Apr 18, 2012 12:20 am
I look into my numerous books about DX7 programming in different languages but didn't find any table for this. Different sources say total LFO speed range is...
1143
charlie 'chop'...
charleschop
Apr 18, 2012 12:28 am
so would it variate as you go up the keyboard in octaves? charles...
1144
Daniel Forró
danforcz
Apr 18, 2012 2:14 am
No, why? On synthesizers LFO speed has no relation to pitch produced by oscillator (= operator in the case of DX). What more: for example on the DX7 II it's...
1146
Jesse Hager
jesse.hager
Apr 18, 2012 8:20 pm
You can use the "LFO Sync" parameter on the patch to synchronize the LFO with the Note-On event. Which will do exactly what the original poster wants in most...
1147
charlie 'chop'...
charleschop
Apr 18, 2012 10:51 pm
i have the feeling the poster wanted to track the harmonic flux at a certain time rate then write a song at a non conflicting tempo too bad that vibrato,...
