Hi all, I'm a new member here, and was hoping to get some help. I have a TX81Z with a blown-up coil in the power supply (datasheet part L1.. Yamaha part ...
1048
narfman96
Dec 12, 2011 6:05 pm
Hi, Welcome to the group! The coil (input hash choke) is part of the EMI/RFI filtering for the input power. If you had to you could do without it by bypassing...
1049
djstorm
djstorm23
Dec 12, 2011 6:45 pm
Hi, Thanks for the info! What happened was- I was repairing a broken pcb on the power supply (board was cracked, traces got cut), right by the power...
1050
Alan Probandt
alan_probandt
Dec 13, 2011 12:20 am
If I recall correctly, the TX81Z has a linear power supply of fuse, switch, RF-supression coil, transformer, bridge rectifier, big cap, voltage regulator ICs...
1051
Michael Leung
mleung1
Jan 7, 2012 2:43 pm
Hi, everyone, I apologize for this rudimentary question, but I have just recently got my hands on an original "brown" dx7 and a tx802 sound modulator. I can...
1052
Jason Adkins
metatone_2000
Jan 7, 2012 3:34 pm
Hi Michael, To get sound from the TX802,use the MIX 1 output to your amp not the individual outs and you don't need the midi out from the TX802 back to the DX7...
1053
LarryS
crivers04
Jan 7, 2012 7:58 pm
On 1/7/2012 8:43 AM, Michael Leung wrote: Hi, everyone, I apologize for this rudimentary question, but I have just recently got my hands on an original "brown"...
1054
Jason Adkins
metatone_2000
Jan 7, 2012 8:23 pm
Hi Larry, I think thats what I meant to say.......lol Although why do you need the polyphony of two TX802? And I disagree about the TX802 loading original DX7...
1055
LarryS
crivers04
Jan 7, 2012 10:48 pm
Ok, Jason, that's cool. I've never been without a computer on mine. I know it goes one way (DX7--> TX802) easy enough, but not the other way round so easy. I...
1056
djstorm
djstorm23
Jan 8, 2012 2:23 am
HI All, Just a final update on this.. the reason the synth shorted was that my wires to fix the board got laid against a solder joint that had a wire sticking...
1057
narfman96
Jan 8, 2012 6:55 am
Glad it's up and running! The short at least explains the unusual failure. I'm also happy there wasn't any collateral damage.......
1058
juergenpb
Jan 16, 2012 3:16 pm
Hi, I am not familiar with the RX15, but it MIGHT BE, that Yamaha does it in the same way as in the organs. If it is done in the same way, the number of bytes...
1059
narfman96
Jan 16, 2012 3:50 pm
Hi Juergen, I only needed to know the size of the sysex dump so I could figure out the size of the memory chip in the RX15. So far no one has replied. I have...
1060
battelino
Jan 20, 2012 12:34 pm
Just bought a TX81Z and installed the excellent TX81Z Programmer. However when transmitting a voice in bulk to the TX81Z some settings are not transferred...
1061
narfman96
Jan 20, 2012 2:02 pm
You are correct the V1.0 firmware is buggy. I can send a V1.6 eprom. You need to see if your eprom is in a socket by removing the top cover and looking. It's...
1062
Peter Sedin
midihooker666
Jan 20, 2012 2:08 pm
try a system reset! you hold up and down arrows on startup.. i think.. google for system reset tx81z.. good luck peter 2012/1/20 narfman96...
1063
Chris Poacher
chrispoacher
Jan 20, 2012 2:20 pm
Hi there, I've been watching this post with interest and would also love to purchase a 1.6 ROM if snymore are available as I also have an old TX ROM. It's v1.1...
1064
Chris
chrispoacher
Jan 20, 2012 2:23 pm
Hi there, I've been watching this post with interest and would also love to purchase a 1.6 ROM if snymore are available as I also have an old TX ROM. It's v1.1...
1065
battelino
Jan 20, 2012 10:02 pm
I tried this, but it did not resolve the problem. Thanks anyway. Milan...
1066
Jesse Hager
jesse.hager
Jan 24, 2012 6:43 pm
According to Yamaha's Service Notes, all TX81Zs with a serial number less than #31441 should have a socket. And all numbers of #31441 and above have a...
1067
Loscha
kobanogomi
Jan 25, 2012 8:51 pm
Hi Guys, I got a Yamaha A3000 the other day. 128mb of Ram, a 9gig SCSI drive, all the add on board (the SCSI card, and the extra/digital outs). It's a shiny...
1068
narfman96
Jan 26, 2012 6:27 pm
Are ya gonna paint it black??? Shiny is mmmmm gooood!!!!!!! I've been watching for one of these Yamaha "A" series samplers. I like the fact the memory...
1069
Dillabough, Dave
dave_dillabough
Jan 26, 2012 6:39 pm
Edward, There is an A series group that has a lot of good info on this box. Good people hang out there. The rotary controllers bouncing is a common problem. In...
1070
jack
jammie.emma
Jan 26, 2012 7:17 pm
the only thing that lets the a series down is scsi transfer of samples almost as slow as floppy the resonance is pure digital distortion and it does self osc ...
1071
Loscha
kobanogomi
Jan 26, 2012 9:51 pm
The biggest issue is the ''Click' on buttton 1 doesn't work! So I can't save samples and do a lot of things, so I have to desolder and swap #1 with #5 and try...
1072
Dietmar Belloff
springmauser
Feb 14, 2012 11:02 pm
Since the RX15 is a stripped-down RX11 and I have the schematics for these, I may tell you something for help. The RX11 uses 3 2k x 8 SRAM chips of type 5118...
1073
narfman96
Feb 15, 2012 3:37 am
Hi Dietmar, Thanks for the reply. So is the sysex dump around 4096 bytes like the DX7? The DX7 uses 3 5118's but only has one 27128 eprom. The memory expansion...
1074
Dietmar Belloff
springmauser
Feb 15, 2012 2:45 pm
You could take a look in the RX11 service manual, it contains the sysex spec as well: http://elektrotanya.com/yamaha_rx11_sm.pdf/download.html (scroll down and...
1076
Jason Adkins
metatone_2000
Feb 27, 2012 8:18 pm
Hi all, Really don't want to sell this but needs must. Anyway for sale my TX802 had new battery about 3 years ago,original manual and loaded with original DX7...
1077
tx81zt
Feb 28, 2012 11:17 am
Dear friends and amateurs of old FM synthesizers produced by Yamaha and others! As interest in such kind of devices is increasing we have developed the first...
