Hi guys, I have a subwoofer Onkyo model SKW780, one zener diode is short, I don't know the value, the location is D920 in the Power Supply Board, someone know the value of this zener?
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Re: Onkyo Subwoofer
Someone have the value? -
Re: Onkyo model SKW780 Subwoofer
The diode should have a number on it. I don't see a D920, are you sure about the location?Last edited by R_J; 12-22-2021, 04:57 PM.Comment
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Re: Onkyo model SKW780 Subwoofer
D920 it's on Power supply board not on the amplifier board, someone have the service manual?Comment
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Re: Onkyo model SKW780 Subwoofer
do you mean d902 ? read what's written on itComment
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Re: Onkyo model SKW780 Subwoofer
It's location number . I don't see what's it's write on it.Comment
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Dear members,
I have a linear variable power supply with unknown brand name that I used for voltage injection.
Then it failed. I discovered that its transistors (Q1 and Q2) are shorted.
In addition, I discovered that its zener diodes are defective.
I can replace the burned transistors.
But I do not know the model of the zener diodes. the model number is not marked on the zener diodes.
Therefore, I cannot replace the zener diodes.
I do not want to test the zener diodes in a test circuit to discover their model or value.
no schematics are available...
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