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Vintage Synth Repair

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Waldorf Pulse repair

Waldorf Pulse repair

2013-09-28 by <kloopy@...>

Hi all,

My first post and glad to be here.
I have two Pulse synths with similar symptoms. One has envelope full open and it's not reacting to midi velocity, the other one is opposite, envelope is fully closed. This is both for VCA and VCF.
I suspect that one of five TL064CN op amps in charge of envelope is dead in both synths.
Anyone had experience with this and can you let me know which op amp could it be if you know the Pulse architecture?
Thank you!
Kruno

RE: Waldorf Pulse repair

2013-09-29 by <narfman96@...>

I would try a reset first.

>To initialize the Pulse:

> - keep the Mode Button pressed during power up
> - then hold the shift key down and select the Menu "InI" with the page buttons
> - by pressing [shift]+[Mode] the Pulse will be initialised

If that doesn't work try swapping the op amp chips from one socket to the other. They may be loose in the sockets or the symptoms will move with the chips.



---In vintagesynthrepair@yahoogroups.com, <kloopy@...> wrote:

Hi all,
My first post and glad to be here.
I have two Pulse synths with similar symptoms. One has envelope full open and it's not reacting to midi velocity, the other one is opposite, envelope is fully closed. This is both for VCA and VCF.
I suspect that one of five TL064CN op amps in charge of envelope is dead in both synths.
Anyone had experience with this and can you let me know which op amp could it be if you know the Pulse architecture?
Thank you!
Kruno

RE: Waldorf Pulse repair

2013-09-29 by <nico678@...>

Hi,


I have the schematics if you need it.


Nicolas



---In vintagesynthrepair@yahoogroups.com, <narfman96@...> wrote:

I would try a reset first.

>To initialize the Pulse:

Show quoted textHide quoted text
> - keep the Mode Button pressed during power up
> - then hold the shift key down and select the Menu "InI" with the page buttons
> - by pressing [shift]+[Mode] the Pulse will be initialised

If that doesn't work try swapping the op amp chips from one socket to the other. They may be loose in the sockets or the symptoms will move with the chips.



---In vintagesynthrepair@yahoogroups.com, <kloopy@...> wrote:

Hi all,
My first post and glad to be here.
I have two Pulse synths with similar symptoms. One has envelope full open and it's not reacting to midi velocity, the other one is opposite, envelope is fully closed. This is both for VCA and VCF.
I suspect that one of five TL064CN op amps in charge of envelope is dead in both synths.
Anyone had experience with this and can you let me know which op amp could it be if you know the Pulse architecture?
Thank you!
Kruno

RE: Waldorf Pulse repair

2013-10-02 by <kloopy@...>

Hi, could you please send it tto kloopy@net.hr or attach it here as a file for everyone if you feel it's appropriate?
Thank you very much,
Kruno

---In vintagesynthrepair@yahoogroups.com, <nico678@...> wrote:

Hi,


I have the schematics if you need it.


Nicolas



---In vintagesynthrepair@yahoogroups.com, <narfman96@...> wrote:

I would try a reset first.

>To initialize the Pulse:

Show quoted textHide quoted text
> - keep the Mode Button pressed during power up
> - then hold the shift key down and select the Menu "InI" with the page buttons
> - by pressing [shift]+[Mode] the Pulse will be initialised

If that doesn't work try swapping the op amp chips from one socket to the other. They may be loose in the sockets or the symptoms will move with the chips.



---In vintagesynthrepair@yahoogroups.com, <kloopy@...> wrote:

Hi all,
My first post and glad to be here.
I have two Pulse synths with similar symptoms. One has envelope full open and it's not reacting to midi velocity, the other one is opposite, envelope is fully closed. This is both for VCA and VCF.
I suspect that one of five TL064CN op amps in charge of envelope is dead in both synths.
Anyone had experience with this and can you let me know which op amp could it be if you know the Pulse architecture?
Thank you!
Kruno

RE: Waldorf Pulse repair

2013-10-02 by <kloopy@...>

Thanks, I tried it already and it didn't help. Something is dead.

All ICs are soldered down so I'll have to be careful with removing them when I locate the dead one. that is why schematic would be of great help. Thanks Nico for offering. Please send it to kloopy@net.hr.

Thanks,

Kruno

I would try a reset first.

Show quoted textHide quoted text

>To initialize the Pulse:

> - keep the Mode Button pressed during power up
> - then hold the shift key down and select the Menu "InI" with the page buttons
> - by pressing [shift]+[Mode] the Pulse will be initialised

If that doesn't work try swapping the op amp chips from one socket to the other. They may be loose in the sockets or the symptoms will move with the chips.



---In vintagesynthrepair@yahoogroups.com, <kloopy@...> wrote:

RE: Waldorf Pulse repair

2013-10-02 by <kloopy@...>

Somehow my message to Nico678 is not visible. Again thanks for the offer, could you please send me the file to kloopy@net.hr or post it here into files?

Thanks again!

Kruno



---In vintagesynthrepair@yahoogroups.com, <kloopy@...> wrote:

Thanks, I tried it already and it didn't help. Something is dead.

All ICs are soldered down so I'll have to be careful with removing them when I locate the dead one. that is why schematic would be of great help. Thanks Nico for offering. Please send it to kloopy@....

Thanks,

Kruno

I would try a reset first.

Show quoted textHide quoted text

>To initialize the Pulse:

> - keep the Mode Button pressed during power up
> - then hold the shift key down and select the Menu "InI" with the page buttons
> - by pressing [shift]+[Mode] the Pulse will be initialised

If that doesn't work try swapping the op amp chips from one socket to the other. They may be loose in the sockets or the symptoms will move with the chips.



---In vintagesynthrepair@yahoogroups.com, <kloopy@...> wrote:

RE: Waldorf Pulse repair

2013-10-03 by <nico678@...>

Hi,


I uploaded it in the file section.

Hope this helps



---In vintagesynthrepair@yahoogroups.com, <kloopy@...> wrote:

Somehow my message to Nico678 is not visible. Again thanks for the offer, could you please send me the file to kloopy@... or post it here into files?

Thanks again!

Kruno



---In vintagesynthrepair@yahoogroups.com, <kloopy@...> wrote:

Thanks, I tried it already and it didn't help. Something is dead.

All ICs are soldered down so I'll have to be careful with removing them when I locate the dead one. that is why schematic would be of great help. Thanks Nico for offering. Please send it to kloopy@....

Thanks,

Kruno

I would try a reset first.

Show quoted textHide quoted text

>To initialize the Pulse:

> - keep the Mode Button pressed during power up
> - then hold the shift key down and select the Menu "InI" with the page buttons
> - by pressing [shift]+[Mode] the Pulse will be initialised

If that doesn't work try swapping the op amp chips from one socket to the other. They may be loose in the sockets or the symptoms will move with the chips.



---In vintagesynthrepair@yahoogroups.com, <kloopy@...> wrote:

RE: Waldorf Pulse repair

2013-10-03 by <kloopy@...>

Thanks again. If this doesn't help nothing will!

Will update you guys when fixed about what was wrong.

Till then...



---In vintagesynthrepair@yahoogroups.com, <nico678@...> wrote:

Hi,


I uploaded it in the file section.

Hope this helps



---In vintagesynthrepair@yahoogroups.com, <kloopy@...> wrote:

Somehow my message to Nico678 is not visible. Again thanks for the offer, could you please send me the file to kloopy@... or post it here into files?

Thanks again!

Kruno



---In vintagesynthrepair@yahoogroups.com, <kloopy@...> wrote:

Thanks, I tried it already and it didn't help. Something is dead.

All ICs are soldered down so I'll have to be careful with removing them when I locate the dead one. that is why schematic would be of great help. Thanks Nico for offering. Please send it to kloopy@....

Thanks,

Kruno

I would try a reset first.

Show quoted textHide quoted text

>To initialize the Pulse:

> - keep the Mode Button pressed during power up
> - then hold the shift key down and select the Menu "InI" with the page buttons
> - by pressing [shift]+[Mode] the Pulse will be initialised

If that doesn't work try swapping the op amp chips from one socket to the other. They may be loose in the sockets or the symptoms will move with the chips.



---In vintagesynthrepair@yahoogroups.com, <kloopy@...> wrote:

Move to quarantaine

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