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PSU on Oregon Scientific HMS388 Hi-Fi went US. Noisy hum. ecee and one of the PSU pol caps was soldered in the wrong way round and had exploded. replaced it but PSU won't start up past a quick burst of initial power. Do you have schematic or idea how to find out how switched mode PSU works?

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CLARKPINK55
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SOURCE: My Philips mini hi-fi unit

if it has been in standby for years the power supply has died .dont bother to much to fix £150 plus ditch it commo fault with all units left in standby they die in the end regards kirk

Posted on Dec 09, 2008

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