MC-202 problems

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MC-202 problems

by David Chang-6 :: Rate this Message:

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Hey AH,
It seems that my MC-202 is experiencing problems.  I fired up the unit this
afternoon and after pressing the power button there is a hum that seems to
appear (never did before).  It seems to go away after I press several notes
on the mini keyboard.  The problem also seems to correct itself after I
switch the ENV settings to GATE.  Wondering if any of you have experienced
any similar problems?  I'm thinking the CEM3340 or Roland VCA chip may be
faulty.  Any ideas on how to determine the cause of the problem and how I
can fix this?

Thanks
D

Re: MC-202 problems

by LucidSounD :: Rate this Message:

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Are you using batteries or an external PSU?  With hum problems it's always a
good idea to run the synth on batteries to check the power supply isn't at
fault.

HTH

Lucid.

----- Original Message -----
From: "David Chang" <changmaster@...>
To: <analogue@...>
Sent: Sunday, June 28, 2009 3:46 AM
Subject: [AH] MC-202 problems


> Hey AH,
> It seems that my MC-202 is experiencing problems.  I fired up the unit
> this
> afternoon and after pressing the power button there is a hum that seems to
> appear (never did before).  It seems to go away after I press several
> notes
> on the mini keyboard.  The problem also seems to correct itself after I
> switch the ENV settings to GATE.  Wondering if any of you have experienced
> any similar problems?  I'm thinking the CEM3340 or Roland VCA chip may be
> faulty.  Any ideas on how to determine the cause of the problem and how I
> can fix this?
>
> Thanks
> D
>


Re: MC-202 problems

by David Chang-6 :: Rate this Message:

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Yes I have tried this, but the hum always appears.  Also, previously when I
was not using batteries and only a PSU, the hum was never there.  This is
definitely a new problem that was not present before.
David

On Sun, Jun 28, 2009 at 2:04 AM, lucidsound <lucidsound@...> wrote:

> Are you using batteries or an external PSU?  With hum problems it's always
> a good idea to run the synth on batteries to check the power supply isn't at
> fault.
>
> HTH
>
> Lucid.
>
> ----- Original Message ----- From: "David Chang" <changmaster@...>
> To: <analogue@...>
> Sent: Sunday, June 28, 2009 3:46 AM
> Subject: [AH] MC-202 problems
>
>
>
>  Hey AH,
>> It seems that my MC-202 is experiencing problems.  I fired up the unit
>> this
>> afternoon and after pressing the power button there is a hum that seems to
>> appear (never did before).  It seems to go away after I press several
>> notes
>> on the mini keyboard.  The problem also seems to correct itself after I
>> switch the ENV settings to GATE.  Wondering if any of you have experienced
>> any similar problems?  I'm thinking the CEM3340 or Roland VCA chip may be
>> faulty.  Any ideas on how to determine the cause of the problem and how I
>> can fix this?
>>
>> Thanks
>> D
>>
>>
>

Wanted- Yamaha CS chip

by LucidSounD :: Rate this Message:

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Looking for a Yamaha IG00150 LFO 8-pin DIL ic for a Yamaha CS-50/60/80.
This ic is often stamped M51620P or YIG7720 and turns up on the SUB card.

Grateful for any leads.

Thanks in advance.

Lucid.