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Old 21st March 2013, 07:48 AM   #1
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Default Yamaha KX-R430 tape deck

I have a Yamaha KX-R430 tape deck that has no functions,it has power but no play,rewind,fast-forward ect... the only thing I can find wrong is on a voltage check was Q26(dte114es) it has 2.8v on the base when it should be on the collector,I installed a new transistor thinking that was the problem but no it wasn't that at all? So its probably an error in the service manual? Has anyone had experience with these decks at all?

Last edited by redrooster; 21st March 2013 at 07:54 AM.
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Old 22nd March 2013, 05:36 AM   #2
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The dte144e is not a transistor but an inverter with two or three Rs integrated with a transistor.

Gajanan Phadte
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Old 27th March 2013, 02:09 AM   #3
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Quote:
Originally Posted by gmphadte View Post
The dte144e is not a transistor but an inverter with two or three Rs integrated with a transistor.

Gajanan Phadte
The DTE114ES is a transistor, with inbuilt resistors to lessen board density! I don't know where you got the idea it was an inverter?
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Old 27th March 2013, 03:26 AM   #4
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Default Functionally It's An Inverter...

Quote:
Originally Posted by redrooster View Post
The DTE114ES is a transistor, with inbuilt resistors to lessen board density! I don't know where you got the idea it was an inverter?
Click the image to open in full size.
This is not a standard 'linear' transistor. Usage is in digital/control circuits, not analog circuitry.
I sent you a PM offering to help a week ago.

Dan.
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Old 28th March 2013, 05:06 AM   #5
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Quote:
Originally Posted by redrooster View Post
The DTE114ES is a transistor, with inbuilt resistors to lessen board density! I don't know where you got the idea it was an inverter?
This is a problem with many posters that have not repaired even a dozen of these things and they start challanging those that have done this the whole of their working life, 30+years in my case.

Gajanan Phadte

Inherent knowledge and opinions are a big hurdle in the path of knowledge.(self)
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