TX802 - Performance Notes Guide
Does anyone know if there is a performance notes guide for the TX802 similar to the one Yamaha produced for the TX816 (see sample attached)?
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Re: Testing HighHarpsichord & LowHarpsichord patches, Scarlatti K208 in stereo
Scarlatti K 380 Sonata in E
https://archive.org/details/Synthegration/13+Audio+Track.aiff
Dandy auto play of 35 dual DX-100 recordings testing many custom patches I created
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My two cents : rust is not a protection
for steel / iron (it's only the case for aluminium and copper)
Steel rust is not protective as it is
permeable (oxyde on copper and aluminium is not permeable, that's
why it protects them)
So water passes through rust and attack
deeper metal, which rusts in turn, etc etc (look at the Titanic if
you don't believe me ?)
In other terms, it is always better to
put a protection layer on steel. One of the best I know to stop
corrosion is Rustol Owatrol
Benoit
Le 08/12/2023 à 16:19, Bruce Wahler via
groups.io a écrit?:
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Just my @0.02USD ...
I would be inclined to leave well enough alone.? Given the age of
the synth (~40 years), I would be amazed if it *didn't* have a
small amount of rust somewhere.? And what I see in your photo is
definitely a *small* amount of rust.? I don't know how the plastic
is attached, but it wouldn't surprise me if adhesive was used.?
Yamaha build quality in the 1980s was excellent, so I would expect
them to use plenty of adhesive.? 40-year-old adhesive is very hard
to remove:? solvents often have little or no effect, and
scraping/grinding it off rarely results in a clean surface.? So,
any repainting you do a) may look as bad or worse than your photo;
and b) may actually protect the metal less than the original
finish.
Rust is iron/steel's way of preventing further corrosion.? A small
amount of it, while not perfect, is far from a terrible thing.
Regards,
-BW
Bruce Wahler
bw@...
978.597.7008
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On 12/8/2023 9:55 AM, googdyamaha
wrote:
The keybed is rusted in places and I want to repaint it but the
black plastic on the keybed doesn't seem to be removable, how do
they mount it on? Do you have any experience with this? Does
your dx7 have any rusty spots inside?
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Just my @0.02USD ...
I would be inclined to leave well enough alone.? Given the age of
the synth (~40 years), I would be amazed if it *didn't* have a small
amount of rust somewhere.? And what I see in your photo is
definitely a *small* amount of rust.? I don't know how the plastic
is attached, but it wouldn't surprise me if adhesive was used.?
Yamaha build quality in the 1980s was excellent, so I would expect
them to use plenty of adhesive.? 40-year-old adhesive is very hard
to remove:? solvents often have little or no effect, and
scraping/grinding it off rarely results in a clean surface.? So, any
repainting you do a) may look as bad or worse than your photo; and
b) may actually protect the metal less than the original finish.
Rust is iron/steel's way of preventing further corrosion.? A small
amount of it, while not perfect, is far from a terrible thing.
Regards,
-BW
Bruce Wahler
bw@...
978.597.7008
?
On 12/8/2023 9:55 AM, googdyamaha
wrote:
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Show quoted text
The keybed is rusted in places and I want to repaint it but the
black plastic on the keybed doesn't seem to be removable, how do
they mount it on? Do you have any experience with this? Does your
dx7 have any rusty spots inside?
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The keybed is rusted in places and I want to repaint it but the black plastic on the keybed doesn't seem to be removable, how do they mount it on? Do you have any experience with this? Does your dx7 have any rusty spots inside? 
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On Sun, Nov 26, 2023 at 08:04 PM, Daniel Forró wrote:
在看到它是 Mk1，所以它不是 RAM4。盒子的另一面和上部到底写了什
This is master data cartridge rom #.
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Your ROM card seems to be damaged or the ROM cardreader in your DX7
is defect.
I had the latter w/ a KORG M1R(ex) and resoldering contacts of the
cardreader unit inside the machine solved the problem.
Anyway,- you?ll find sysex data of Yamaha DX7 factory ROM cardridges
all over the place in the web.
So,- no loss when the cardridge is dead.
Throw it in the bin when it is and use BOME SendSX (for Windows) to
load and dump single patches or patchbanks in .sys and.mid format.
It works like a charme w/ all my vintage MIDI modules and synths,-
DX7mkII, TX816, TG77 and the other brands.
Am 27.11.2023 um 11:44 schrieb
googdyamaha via groups.io:
This
is master data cartridge rom #1, Yes I have learned from the manual
that this cartridge cannot be formatted.
?
My
main problem which I didn't bring up before is that the dx7
can't read this cartridge and when it does it prompts a format
conflict. That's
why I tried replacing the battery in the dx7, but it didn't
work, I also tried Diagnostic Test (Function+16+32) several
times, but it didn't solve anything.
?
I
see everyone has 10 tests in Diagnostic Test and I only have
8. My
dx7
version
is
1.8.
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This is master data cartridge rom #1, Yes I have learned from the manual that this cartridge cannot be formatted.
?
My main problem which I didn't bring up before is that the dx7 can't read this cartridge and when it does it prompts a format conflict. That's why I tried replacing the battery in the dx7, but it didn't work, I also tried Diagnostic Test (Function+16+32) several times, but it didn't solve anything.
?
I see everyone has 10 tests in Diagnostic Test and I only have 8. My dx7 version is 1.8.
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I see now that it is Mk1, so it is not RAM4. What exactly is written on the other side of the box and on upper part?
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On Nov 26, 2023, at 18:58, googdyamaha <valerizimlichxxc21@...> wrote:
Unable to dump data from Data cartridge to dx7 internal rom, prompts format conflict.
cartridge can't be formatted (I've turned off memory protection), is the cartridge bad? There is only an AB toggle switch on the cartridge, no other switches.（I have replaced the battery with a brand new one.） <1.mp4>
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Which cartridge is it? This doesn’t look like RAM4, it is ROM, so of course it can’t be formatted.
And how could you replace battery? There’s no battery in ROM cartridge as you can see. Or do you mean battery in DX7?
It was not the best idea to connect the cartridge without the box. Maybe you have connected it opposite side, so you could destroy it.
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On Nov 26, 2023, at 18:58, googdyamaha <valerizimlichxxc21@...> wrote:
Unable to dump data from Data cartridge to dx7 internal rom, prompts format conflict.
cartridge can't be formatted (I've turned off memory protection), is the cartridge bad? There is only an AB toggle switch on the cartridge, no other switches.（I have replaced the battery with a brand new one.） <1.mp4>
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Other options:
Amazon
Newark/Farnell
FWIW, this fuse is one of the most common values in vintage gear.
Regards,
-BW
Bruce Wahler
bw@...
978.597.7008
?
On 11/7/2023 2:31 PM, dave_dillabough
wrote:
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On Mon, November 6, 2023 7:18 pm, googdyamaha wrote:
Hi guys
FKD 250V 0.5A glass fuse
Can a substitute be found? Thank you all.
daved@...
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On Mon, November 6, 2023 7:18 pm, googdyamaha wrote: Hi guys
FKD 250V 0.5A glass fuse
Can a substitute be found? Thank you all.
daved@...
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It's actually a fuse from a rx11 drum machine, sorry I forgot to provide exact info.
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In my schematics and service manual:
F1 - European model T 0.5 A/250 V, USA, Canadian, Japanese 0.5 A (without type, but probably F = Fast)
F2 - 2 A (without type, probably F)
F3, F4 - 0.75 A (without type, probably F)
Parts list shows also these fuses without details where they should be: 0.7 A for Japanese model, and T 250 mA for German model with Serial Numbers less than 2478, T 500 mA for German model with Serial Numbers more than 3311… There are also mentioned fuses T 800 mA and T 2A.
It seems to me strange that for different primary voltage there’s the same fuse value. It should be different for 100/120 or 220/240 Volt.
Daniel Forró
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On Nov 7, 2023, at 18:22, Florian Anwander <fanwander@...> wrote:
Hello Valeri
The brand of the fuse does not matter. Any fuse with the same values and measures will do it.
And btw: the DX7 does not use a 5A fuse. The service manual says:
0.5A for the fuse on the primary side of the transformer
on the secondary side of the transformer:
0.75A for the two 15V lines
2A for the 5V line.
Best regards
Florian
Am 07.11.23 um 03:43 schrieb googdyamaha:
HI GUYS.
Finding Glass Fuse Substitutes，(Do you know what brand of fuse this triangle symbol is?)
Sorry for the poor English.
FKD 250V 0.5A and FKD 250V 5A, 6＊30mm
<PXL_20231107_005755721~2.jpg><PXL_20231107_024057678~2.jpg>
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Hello Valeri
The brand of the fuse does not matter. Any fuse with the same
values and measures will do it.
And btw: the DX7 does not use a 5A fuse. The service manual says:
0.5A for the fuse on the primary side of the transformer
on the secondary side of the transformer:
0.75A for the two 15V lines
2A for the 5V line.
Best regards
Florian
Am 07.11.23 um 03:43 schrieb googdyamaha:
toggle quoted message
Show quoted text
HI GUYS.
Finding Glass Fuse Substitutes，(Do you know what brand of fuse
this triangle symbol is?)
Sorry for the poor English.
FKD 250V 0.5A and FKD 250V 5A, 6＊30mm
 
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