SY-99 Power Supply Circuit board resistor values needed

The Yamaha SY99 is a synthesiser combining frequency modulation synthesis (branded as Advanced FM) and sample-based synthesis (branded as Advanced Wave Memory 2) and the direct successor to Yamaha's SY77/TG77

Moderators: parametric, Derek, Saul, Fozzer

msc1958
Member
Member
Posts: 27
Joined: Wed May 28, 2014 1:41 pm

SY-99 Power Supply Circuit board resistor values needed

Unread post by msc1958 » Tue Jan 13, 2015 12:34 am

I am repairing a power supply circuit board and need the forums help. The service manual for the SY-99 contains a Power Supply circuit board diagram with most of its component values listed on another page, except for the resistors. I need to know what the value is for R4. If someone has a list of the values for R1 through R5, I will be sure to enter this info hand written into my manual! Hope you all will do the same if not already done! Thanks in advance. Mark



User avatar
shadowmask
sector101.co.uk
sector101.co.uk
Posts: 501
Joined: Mon Jan 17, 2005 1:00 am
Contact:
Great Britain

Re: SY-99 Power Supply Circuit board resistor values needed

Unread post by shadowmask » Tue Jan 13, 2015 9:11 am

R1
220R - 1W

R2 - R5
10K - Possibly 1/4W considering voltages present

Brian


GEAR: SY85 / TG-500 / TG-300 / MOXF6 / FG410 / Supernova II
PROJECTS: SYEMB05, SYEMB06, EXFLM2, EXM-E3, Waveblade, Datablade
WebSite: http://www.sector101.co.uk
WordPress: https://sector101synth.wordpress.com
Facebook: https://www.facebook.com/sector101

msc1958
Member
Member
Posts: 27
Joined: Wed May 28, 2014 1:41 pm

Re: SY-99 Power Supply Circuit board resistor values needed

Unread post by msc1958 » Tue Jan 13, 2015 2:17 pm

Brian,

Thanks for the info. I appreciate your response that included the wattages too.

Mark :)



Post Reply

Return to “Yamaha SY99 Forum”

Who is online

Users browsing this forum: No registered users and 1 guest