Yahoo Groups archive
Thread
2011-10-18 by ahassine@nettilinja.fi
Hi All!!! I have a Yamaha CS-5 monosynth and it blows the fuse all the time. Local electrician inspected it and said that it�s the TA 7179P (IC, 14 pins), that is the culprit... he said he couldn�t find one or its replacement in his catalogues... Have any of you any ideas where to look for it or a modern replacement IC? thanks in advance... chers, Ami H
2011-10-18 by oscillator909@web.de
Hi All!!!
I have a Yamaha CS-5 monosynth and it blows the fuse all the time. Local electrician inspected it and said that it´s the TA 7179P (IC, 14 pins), that is the culprit... he said he couldn´t find one or its replacement in his catalogues...
Have any of you any ideas where to look for it or a modern replacement IC?
thanks in advance...
chers,
Ami H
2011-10-18 by Brian
Hi Ami
I too would be most surprized if the IC was the cause of fuse blowing. The device appears to be a 14 pin DIL switch and even if it were short circuit it may not blow the fuse. I\u2019d be more inclined to look into the power supply area, dodgy transformer, blown rectifiers or short circuit capacitors in the power supply.
Regards
Brian G3OYU
From: vintagesynthrepair@yahoogroups.com [mailto:vintagesynthrepair@yahoogroups.com] On Behalf Of ahassine@...
Sent: 18 October 2011 12:24
To: vintagesynthrepair@yahoogroups.com
Subject: [vintagesynthrepair] Yamaha CS5 problem
Hi All!!!
I have a Yamaha CS-5 monosynth and it blows the fuse all the time. Local electrician inspected it and said that it´s the TA 7179P (IC, 14 pins), that is the culprit... he said he couldn´t find one or its replacement in his catalogues...
Have any of you any ideas where to look for it or a modern replacement IC?
thanks in advance...
chers,
Ami H
2011-10-18 by ahassine@nettilinja.fi
Thanks guys for your insights! Yes, I must go to the workshop and see myself...I�ll take your ideas to the electrician and we�ll have another look... cheers, Ami
2011-10-18 by oscillator909@web.de
Thanks guys for your insights! Yes, I must go to the workshop and see myself...I´ll take your ideas to the electrician and we´ll have another look...
cheers,
Ami
2011-10-19 by Brian
Ami you don\u2019t need an electrician you need an electronics engineer. Believe me they are not the same by any stretch of the imagination!
Regards
Brian G3OYU
From: vintagesynthrepair@yahoogroups.com [mailto:vintagesynthrepair@yahoogroups.com] On Behalf Of ahassine@...
Sent: 18 October 2011 5:21
To: vintagesynthrepair@yahoogroups.com
Subject: [vintagesynthrepair] Re: Yamaha CS5 problem
Thanks guys for your insights! Yes, I must go to the workshop and see myself...I´ll take your ideas to the electrician and we´ll have another look...
cheers,
Ami
2011-10-31 by ahassine@nettilinja.fi
Thanks!!! I am now waiting for some components to arrive and then the repair will proceed. The transformer should be OK, it seems to be the circuit controlling the action of the transformer, that is the trouble. We shall see and I´ll keep you posted... cheers, Ami --- In vintagesynthrepair@yahoogroups.com, "oscillator909@..." <oscillator909@...> wrote:
> > Hi, > > if there any problems with it, there is another reason : > > exchange the faulty power supply with a new one, there are several pre build powersupplys with +/- 15v on the market, > or buy a kit and build it by yourself. but beware of a switch mode power supply in your cs5, it makes many problems > in the audio circuits, > > greetings > > On Oct 18, 2011, at 6:20 PM, ahassine@... wrote: > > > Thanks guys for your insights! Yes, I must go to the workshop and see myself...I´ll take your ideas to the electrician and we´ll have another look... > > > > cheers, > > Ami > > > > >