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by Miks
Mon Mar 18, 2024 10:38 am
Forum: That Great Gig In The Sky
Topic: Steve Harley dead
Replies: 3
Views: 43

Steve Harley dead

Sad news - Steve Harley, founder & singer of Cockney Rebel, died aged 73 due of cancer. :(

I remember songs such as 'Make Me Smile (Come Up And See Me)', 'Sebastian' and the Beatles-Cover 'Here Comes The Sun'...

RIP Steve!
by Miks
Mon Mar 11, 2024 2:06 pm
Forum: Other Yamaha Keyboards/Modules & Equipment
Topic: Yamaha Electone MC-600 Help
Replies: 4
Views: 484

Re: Yamaha Electone MC-600 Help

Hello Miks. Thanks for your answer. I tried your suggestion and it worked. That's great! ((i)) But, about the Shuffle function, you have no idea? No, sorry - I've never seen or touched any of those Yamaha organs in person... In any case, thanks again for your response. :wink: You're welcome 8)
by Miks
Mon Mar 11, 2024 11:03 am
Forum: Other Yamaha Keyboards/Modules & Equipment
Topic: Yamaha Electone MC-600 Help
Replies: 4
Views: 484

Re: Yamaha Electone MC-600 Help

Hi Mecaso,

welcome to the forums :D

Maybe step 1 of this picture below could be of help...?
Functions following Power On.png
by Miks
Wed Jan 17, 2024 7:07 pm
Forum: Yamaha TX802 Downloads
Topic: Performance List for the TX802
Replies: 0
Views: 601

Performance List for the TX802

I've spent some time on Excel to (kinda) 'recreate' the Performance List for the TX802.
TX802 Performances.pdf
(134.97 KiB) Downloaded 40 times
And I add an empty Performance list so one can note their own Performances if needed... :D
TX802 Performances (leer - empty).pdf
(77.08 KiB) Downloaded 32 times
Enjoy...
by Miks
Thu Nov 30, 2023 11:44 pm
Forum: Yamaha DX & TX Forum
Topic: TX802 very weak sound output
Replies: 2
Views: 297

Re: TX802 very weak sound output

I recommend to check if the muting section of the TX's circuitry is working as it should - which to me seems not to be the case due the headphones are working...

If you're in need of the schematic/service manual please see here:

viewtopic.php?p=100028#p100028
by Miks
Wed Nov 29, 2023 2:26 pm
Forum: Yamaha DX & TX Forum
Topic: Icarito's DX7
Replies: 6
Views: 655

Re: Icarito's DX7

jima wrote: Tue Nov 28, 2023 7:25 pm Possibly because it is a replacement and although perhaps an equivalent it looks slightly too large to solder flat to the board?
I don't think it's a replacement - afaik most (if not all) DX7 Mk.I have this glass-bodied diode mounted upright.
by Miks
Fri Nov 24, 2023 12:42 pm
Forum: Yamaha EX5 Forum - Also covers the EX7
Topic: Exify util - alive and kicking
Replies: 3
Views: 2120

Re: Exify util - alive and kicking

Hi arneau,

please DO check your PM's (private Messages) :wink:
by Miks
Wed Nov 08, 2023 1:26 pm
Forum: Yamaha DX & TX Forum
Topic: DX 7 mark I Battery problems
Replies: 8
Views: 331

Re: DX 7 mark I Battery problems

Now i have measured IC11 pin4 (in6) and i've got some different reading due to IC 19-20-21 the meter showed 0.407V is that correct ? On one side (by looking at your picture I think it's the 'lower' pin) of the 10 MΩ resistor definitely the same voltage as on Pin24 of IC19, 20 & 21 must be measu...
by Miks
Tue Nov 07, 2023 12:20 am
Forum: Yamaha DX & TX Forum
Topic: DX 7 mark I Battery problems
Replies: 8
Views: 331

Re: DX 7 mark I Battery problems

Now i have measured the ic 19-20-21 and they are ok. I measured Pin 24 on ic 19/20 and 21 to 3.1V. That sounds good (Y) The connection of the soldering side of the pcb ( the bridge between the pads) is ok too. Japp, looks fine. Now is the question, what to do next ? The battery voltage goes across ...
by Miks
Mon Nov 06, 2023 11:11 am
Forum: Yamaha DX & TX Forum
Topic: DX 7 mark I Battery problems
Replies: 8
Views: 331

Re: DX 7 mark I Battery problems

Hi Halvard, welcome to the Yamaha Musicians forums (Y) The chips IC19, IC20 & IC21 are the internal RAM of the DX7 - they're holding the internal sounds. If the battery power fails the memory chips will be erased - they need a constant power level to keep their content. I suggest to do the follo...
by Miks
Fri Nov 03, 2023 4:48 pm
Forum: Yamaha SY85 Forum - Covers the SY85 Keyboard and TG500 Module
Topic: TG500 (Vintage) Firmware ROM Version
Replies: 4
Views: 360

Re: TG500 (Vintage) Firmware ROM Version

@Luca: please DO check your PMs (Private Messages)... 8)
by Miks
Sun Oct 29, 2023 11:48 am
Forum: Yamaha DX & TX Forum
Topic: DX7IID - output from mains drastically lower than from headphone jack?
Replies: 7
Views: 269

Re: DX7IID - output from mains drastically lower than from headphone jack?

Maybe the muting circuitry which mutes the A & B outputs for a short while (to prevent a loud 'plopp' if an amp is already connected to the DX and switched to ON) is faulty or not getting the appropriate/correct signal coming from the reset routine across IC18... After taking another sharp look...
by Miks
Wed Oct 25, 2023 3:56 pm
Forum: Yamaha SY85 Forum - Covers the SY85 Keyboard and TG500 Module
Topic: TG500 (Vintage) Firmware ROM Version
Replies: 4
Views: 360

Re: TG500 (Vintage) Firmware ROM Version

@Felix: please DO check your PMs (Private Messages)... 8)
by Miks
Sun Oct 22, 2023 2:29 pm
Forum: Yamaha DX & TX Forum
Topic: Yamaha DX100 - please help me with finding replacement parts
Replies: 2
Views: 174

Re: Yamaha DX100 - please help me with finding replacement parts

Here's what I found (so far):
DX100 Pots & Sliders.GIF
DX100 Pots & Sliders.GIF (9.09 KiB) Viewed 169 times
The part numbers are on the right side...

Btw: the term (Center Tap?) for CT is my guess...
by Miks
Sun Oct 22, 2023 2:06 pm
Forum: Yamaha SY22, SY35 & SY55
Topic: SY35 Internal Card Preset Keys are freezing the unit.
Replies: 10
Views: 3591

Re: SY35 Internal Card Preset Keys are freezing the unit.

Long overdue update: The issue is now resolved. It seems there was a trace broken somewhere. I skipped "faulty" trace section by soldering bypass wire to the nearest working junction. Even after a long time - it's good to hear you've got that issue (somehow) solved (Y) Thanks for reportin...