Synth-DIY Yahoo! Groups Archives

Thread

Troubleshooting the Sub Oscillator Section

2017-09-15 by joaopaulosilva12@...

My Sub Oscillator section is not working at all.

What's the best way to go about troubleshooting the different components for failures on the board?

How do I measure the LFO IG00150 chip to see if its good or bad? Mind you, I am not an electronics guy so I would need detailed instructions. I don't have a technician anywhere near where I live so trying to do this solo.

Much appreciated.

Re: [yamahacs80] Troubleshooting the Sub Oscillator Section

2017-09-15 by Florian Anwander

Hello

You need an oscilloscope and the ability to handle the scope and the
ability to read schematics and pcb layouts.

To be honest: As long as you are not an "electronics guy" the chances
that you will destroy your CS are bigger than the chances that you will
repair it.
Just as simple example: one mounting rail of the cards runs supply
voltage. If you get the wrong contact between a device in the synth and
this mounting rail, you may blow a lot of things...

I am sorry, that I don't have better news for you.

Florian

Am 15.09.2017 um 04:58 schrieb joaopaulosilva12@... [yamahacs80]:

>
> My Sub Oscillator section is not working at all.
>
>
> What's the best way to go about troubleshooting the different
> components for failures on the board?
>
>
> How do I measure the LFO IG00150 chip to see if its good or bad? Mind
> you, I am not an electronics guy so I would need detailed
> instructions. I don't have a technician anywhere near where I live so
> trying to do this solo.
>
>
> Much appreciated.
>
> _

--
http://www.florian-anwander.de

Re: [yamahacs80] Troubleshooting the Sub Oscillator Section

2017-09-15 by Jonathan Dewdney

its quite true what Florian says ... it's really not something you can approach lightly ... at least not without understanding the interactions of components and circuitry architecture. I have years and years of basic experience and good technical skills with soldering etc. myself but even i find it extremely challenging and most often frustrating. this is not to say you shouldnt do it... but you will have to be extremely committed and spend hundreds of hours learning on simpler things maybe. i do not want to discourage you .... nor does Florian ... but its something you will have to work your way up to ...

Sent from my iPad

.

Re: Troubleshooting the Sub Oscillator Section

2017-09-16 by joaopaulosilva12@...

Thank you both Florian and Jonathan. I'll take your advice seriously.

Re: Troubleshooting the Sub Oscillator Section

2017-09-20 by joaopaulosilva12@...

Does anyone have the Sub-Oscilator board replacement components LIST, in case I need to buy replacements and where you usually source them from.

Thanks