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Old 14th October 2011, 08:04 PM   #1
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Default Experience with Yorkville EF500p Power MOSFET amps?

Hello All,

Who has service experience with the Yorkville EF508p active speakers? They use MOSFETs for the LF and HF amps. Power is OK, but blows main fuse that fast, so its hard to service. Suggestions?

Looking at buying a MOSFET tester but few available it seems.

Thanks,

William
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Old 14th October 2011, 09:09 PM   #2
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Old 14th October 2011, 09:21 PM   #3
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Quote:
Originally Posted by grievousangel View Post
Hello All,

They use MOSFETs for the LF and HF amps. Power is OK, but blows main fuse that fast, so its hard to service. Suggestions?


William
Blowing the mains fuse is usually something catastrophic.
Transformer shorted, rectifier shorted, smoothing capacitor shorted or output mosfets shorted.
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