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valedian Guest
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Posted: Wed Sep 10, 2014 7:07 am Post subject: denon PMA 100M |
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Hello,
I search the shematic or manual service for Denon PMA 100M.
The transformer is out, I want to replace with a new but I dont know the secondery voltage transformer.
thanks, an sorry for my poor english.
Valedian |
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vtech
Joined: 08 May 2006 Posts: 1264 Location: USA
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Posted: Fri Sep 12, 2014 1:23 am Post subject: |
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I do not have the manual or familiar with the specific model but I can tell you that in the past many of the Denon transformers failed due to open thermal circuit breakers that is built in the transformer.
I used to be able to repair a good 95 percent of them by simply adding an external circuit breaker, PROVIDED the transformer winding is not damaged.
Whether it is still the same or that's what you have, I can not be sure?
Classic failures were open primary winding mainly due to overstress.
Happened with both standard and Toroid transformers used extensively throughout their line. |
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Guest
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Posted: Sat Sep 13, 2014 9:42 am Post subject: |
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Thanks for answer,
In fact, when I connect trasformer ( only primary, secondery not loaded) the external protect fuse is breaking. I think is a short circuit in the primary or secondery.
I dont know the secondery voltage to repalce with a new one ( probably between 2x25V and 2x35V) ?
If you have an information .
thanks a lot
valedian |
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