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Schaltplan Dynacord Reference 500

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Manfred

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Schaltplan Dynacord Reference 500
« am: 9.02.2012 09:11 »
Hallo Zusammen,

im Anhang der Schaltplan.

Gruß
Manfred


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Offline Han die Blume

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Re: Schaltplan Dynacord Reference 500
« Antwort #1 am: 9.02.2012 09:47 »
Supergeil, danke!

LG

Kai

Hier noch ein Foto, wies aussieht:

« Letzte Änderung: 9.02.2012 14:27 von Han die Blume »
Der frühe Vogel kann mich mal!

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Offline marcomeloni1979

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Re: Schaltplan Dynacord Reference 500
« Antwort #2 am: 22.08.2022 18:36 »
Hi im resurrecting an old thread... i have a Dynacord Reference 500 that runs 719V on the anodes. Is that normal? I know EL34 can take up to 800V but it seems really high... anybody csn confirm?

Marco

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Offline sev

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Re: Schaltplan Dynacord Reference 500
« Antwort #3 am: 22.08.2022 19:22 »
Hi Marco,
the 2nd schematic above states 675V, so your   719 seem plausible given the unit was designed with 220V Mains voltage in mind and you should nowadays have somewhere around 230 from your outlets  :angel:
cheers,
Stefan
"If there's more than one way to do a job, and one of those ways will result in disaster, then somebody will do it that way."
--Edward Murphy

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Offline marcomeloni1979

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Re: Schaltplan Dynacord Reference 500
« Antwort #4 am: 23.08.2022 09:46 »
Hi Marco,
the 2nd schematic above states 675V, so your   719 seem plausible given the unit was designed with 220V Mains voltage in mind and you should nowadays have somewhere around 230 from your outlets  :angel:
cheers,
Stefan

Thank you very much for your answer Stefan! Do you have any experience with this particular model? Suddenly the volume dropped a lot and the volume control and tone controls dont work anymore. Only the master volume, but at a very reduced volume. I tried swapping both preamp and power tubes but no change...

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Offline sev

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Re: Schaltplan Dynacord Reference 500
« Antwort #5 am: 23.08.2022 20:12 »
Hi Marco,
Last I had one of them on my workbench must have been more than a decade ago, with the usual issues: leaking caps and drifted resistors, so i can´t be of much help with your particular problem.
Best to start with the usual suspects, resolder all over and check the component values if they are still within specs.
cheers,
Stefan
"If there's more than one way to do a job, and one of those ways will result in disaster, then somebody will do it that way."
--Edward Murphy

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Offline sev

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Re: Schaltplan Dynacord Reference 500
« Antwort #6 am: 23.08.2022 20:17 »
P.S.: Feierabendklampfer has reworked a Reference a while back and documented a lot of his journey:
https://www.tube-town.de/ttforum/index.php?topic=20955.0
"If there's more than one way to do a job, and one of those ways will result in disaster, then somebody will do it that way."
--Edward Murphy

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Offline marcomeloni1979

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Re: Schaltplan Dynacord Reference 500
« Antwort #7 am: 24.08.2022 00:07 »
P.S.: Feierabendklampfer has reworked a Reference a while back and documented a lot of his journey:
https://www.tube-town.de/ttforum/index.php?topic=20955.0

Thank you so much for your help! :topjob: