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Audio equipment

Hi friends, I have a sony genezi MHC-GTR6 sound system.

Nilton flores

hace 5 años

Screenshot_2018-03-20-12-07-29.png [571.57kb] The equipment turns on and off and stays on standby LED and does not turn on again and in the amplification stage it carries the stk sanyo 412-770 and on pins 2 and 3 it carries a diode D1304 smd with the number 12 and in the pins 4y5 carries another diode D1306 of equal number and this one is short with which I can replace it thanks

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enigmahernandez

1.423

hace 5 años

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hace 5 años

Hello, good afternoon, According to the datasheet, the diodes are Zener, GZA18Y, the complete model is the GZA18Y-BT code with equivalent NTE5027A with a value of 18V 1/2 watt of power and is a zener diode. If my comment was helpful, give me a little hand up and if it served you, accept my solution. Thank you

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Nilton flores

hace 5 años

Hi first of all thanks for your help but on the diode it has written 12 and not the code you show me or they are the same thanks in advance.

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Milflo

1.386

hace 5 años

It's a 12v zener diode, it changes the two zener diodes D1304 and D1306. [Img] https://cdn.yoreparo.com/uploads/imagen_post/0003/40/72a9924ae8b1dafd83f207b24c9cd24da0c38eeb.png [/img]

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Nilton flores

hace 5 años

For any 12v zener diode. And in watts of how much it has to be thanks in advance it doesn't need to be smd. One of them is fine but you recommend changing the 2 thanks.

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Milflo

1.386

hace 5 años

You can use a 12v to 1/2 watt zener diode of normal mounting, you just have to be careful to place it with the correct polarity and if you change the two diodes.
You should also check the resistors R1313 and R1314, diodes D1305 and D1307 and the resistors marked with the triangle symbol.

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