Re: New Oberheim SEM is this SCD ?

[Vco3]

HI I won't be buying the new sem due to the surface mount construction. ITs
a total pain to work on. cya analog-jeff



visit www.jeffreykoepper.com for ambient electronic music

[Dave Manley]

Vco3@... wrote:
> HI I won't be buying the new sem due to the surface mount construction. ITs
> a total pain to work on. cya analog-jeff
>  
> visit www.jeffreykoepper.com for ambient electronic music
>

I'll rehash this one more time.

With a few exceptions (certain package types, for example BGA and QFN)
there is no reason any good synth tech should be incapable of repairing
surface mount boards.  It may require some training/practice, some new
tools, and parts, but there is nothing technically difficult about
repairing the type of surface mount used on the new SEM.

The new SEM is primitive in its use of surface mount.  Many (all?) of
the transistors are even through hole.

I wish the myth that surface mount is impossible to rework would go
away.  I've reworked surface mount boards since the late 80's.  This
isn't new technology.

-Dave

[r- jeancarlo]

ohhh nnooo  those pins are getting smaller and smaller!
 

> Date: Tue, 3 Nov 2009 15:43:52 -0800
> From: dlmanley@...
> CC: analogue@...
> Subject: Re: [AH] New Oberheim SEM is this SCD ?
>
> Vco3@... wrote:
> > HI I won't be buying the new sem due to the surface mount construction. ITs
> > a total pain to work on. cya analog-jeff
> >
> > visit www.jeffreykoepper.com for ambient electronic music
> >
>
> I'll rehash this one more time.
>
> With a few exceptions (certain package types, for example BGA and QFN)
> there is no reason any good synth tech should be incapable of repairing
> surface mount boards. It may require some training/practice, some new
> tools, and parts, but there is nothing technically difficult about
> repairing the type of surface mount used on the new SEM.
>
> The new SEM is primitive in its use of surface mount. Many (all?) of
> the transistors are even through hole.
>
> I wish the myth that surface mount is impossible to rework would go
> away. I've reworked surface mount boards since the late 80's. This
> isn't new technology.
>
> -Dave
>
>
>

     

[James Husted]

And any good Synth tech better start learning to deal with surface  
mount stuff cause it will be harder and harder to make any electronics  
with through hole technology. The parts are disappearing all the time.  
Almost all consumer technology is made SMD and SOME of those get  
repaired.


On Nov 3, 2009, at 3:43 PM, Dave Manley wrote:

> Vco3@... wrote:
>> HI I won't be buying the new sem due to the surface mount  
>> construction. ITs a total pain to work on. cya analog-jeff
>> visit www.jeffreykoepper.com for ambient electronic music
>
> I'll rehash this one more time.
>
> With a few exceptions (certain package types, for example BGA and  
> QFN) there is no reason any good synth tech should be incapable of  
> repairing surface mount boards.  It may require some training/
> practice, some new tools, and parts, but there is nothing  
> technically difficult about repairing the type of surface mount used  
> on the new SEM.
>
> The new SEM is primitive in its use of surface mount.  Many (all?)  
> of the transistors are even through hole.
>
> I wish the myth that surface mount is impossible to rework would go  
> away.  I've reworked surface mount boards since the late 80's.  This  
> isn't new technology.
>
> -Dave
>
>
>

[Paul Perry]

It isn't really a matter of choice.
When I made the Frostwave Sonic Alienator, the
key chips simply were't available in DIP.
Most interesting new chips aren't.

paul perry Melbourne Australia

[David Bulog]

Is there any pics of the new SEM with lid off so we can see the ratio  
of through hole to SCD --on reflection it does not sound as bad as I  
thought
Long term service is the most important thing

On 4/11/2009, at 12:43 PM, Dave Manley wrote:

> Vco3@... wrote:
>> HI I won't be buying the new sem due to the surface mount  
>> construction. ITs a total pain to work on. cya analog-jeff
>> visit www.jeffreykoepper.com for ambient electronic music
>
> I'll rehash this one more time.
>
> With a few exceptions (certain package types, for example BGA and  
> QFN) there is no reason any good synth tech should be incapable of  
> repairing surface mount boards.  It may require some training/
> practice, some new tools, and parts, but there is nothing  
> technically difficult about repairing the type of surface mount used  
> on the new SEM.
>
> The new SEM is primitive in its use of surface mount.  Many (all?)  
> of the transistors are even through hole.
>
> I wish the myth that surface mount is impossible to rework would go  
> away.  I've reworked surface mount boards since the late 80's.  This  
> isn't new technology.
>
> -Dave
>
>
>

[David Bulog]

What if the service manual does not get published and the factory that  
makes the boards stops doing runs -that is where the trouble could start

On 4/11/2009, at 8:38 PM, David Bulog wrote:

> Is there any pics of the new SEM with lid off so we can see the  
> ratio of through hole to SCD --on reflection it does not sound as  
> bad as I thought
> Long term service is the most important thing
>
> On 4/11/2009, at 12:43 PM, Dave Manley wrote:
>
>> Vco3@... wrote:
>>> HI I won't be buying the new sem due to the surface mount  
>>> construction. ITs a total pain to work on. cya analog-jeff
>>> visit www.jeffreykoepper.com for ambient electronic music
>>
>> I'll rehash this one more time.
>>
>> With a few exceptions (certain package types, for example BGA and  
>> QFN) there is no reason any good synth tech should be incapable of  
>> repairing surface mount boards.  It may require some training/
>> practice, some new tools, and parts, but there is nothing  
>> technically difficult about repairing the type of surface mount  
>> used on the new SEM.
>>
>> The new SEM is primitive in its use of surface mount.  Many (all?)  
>> of the transistors are even through hole.
>>
>> I wish the myth that surface mount is impossible to rework would go  
>> away.  I've reworked surface mount boards since the late 80's.  
>> This isn't new technology.
>>
>> -Dave
>>
>>
>>
>