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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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SOURCE: hi i need help

Here's the link to the drivers page for the DS6618

Posted on Jan 24, 2008

bestdarngood
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SOURCE: JBL sub PSW-D110 hums, and the fuse is blown

here is the manual, I am looking for a more detailed version

Posted on Mar 25, 2008

AvioriX
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SOURCE: oregon scientific walkie talkies

Hi Neil

You can obtain the Owner's Manual (Contains simple instructions) from link below

http://www.expressfix.net/manuals/2WayRadios/OregonScientificTP329



Posted on Sep 06, 2008

CLARKPINK55
  • 71 Answers

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

  • 2 Answers

SOURCE: Oregon Scientific VR399 Handheld Digital

I have misplaced my driver also and my device is full of recordings I dont want to delete.

Posted on Apr 13, 2009

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Were the inverters separate from the power supply? If so, the power supply may be a fault. Most TV's and Monitors suffer from Bad Capacitors, which can be identified due to them "swelling", the tops become rounded instead of flat. When this happens, the capacitor has failed, and can cause the hum, due to more ripple in the power out from the PSU. Also check you reattached the earth cable, if you had to remove it when replacing the board. Many are clamped to the metalwork with a screw.

If you have soldering skills, you can buy replacement caps cheap,and replace them yourself. Failing that, you're looking at a PSU board.

see this picture for an example - http://www.miteredcode.com/wp-content/uploads/2010/02/defective_caps.jpg

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Oregon scientific walkie talkies


Hi Neil

You can obtain the Owner's Manual (Contains simple instructions) from link below

http://www.expressfix.net/manuals/2WayRadios/OregonScientificTP329



Sep 06, 2008 | Oregon Scientific Radio Communications

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