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need help with a power supply

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need help with a power supply

Postby Nick13 » Wed Feb 19, 2014 4:55 am

hi, I have a subwoofer that got hit by a power surge and need to replace the step down transformer, I have the schematic which I am attaching.
I would appreciate if somebody give me a hand with this.

thank you.
Attachments
resubwooferhelp.zip
power supply is in main board pdf
(1.23 MiB) Downloaded 1013 times
Nick13
 
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Joined: Wed Feb 19, 2014 4:15 am
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Re: need help with a power supply

Postby Sebi » Tue Feb 25, 2014 12:02 pm

Hi!

Your equipment contain STK4040 = 70W output power, with + - 45V on buffer capacitors.
You need a min.100..120VA transformer with 2x30..32V secondary winding.
Sebi
 
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