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Re: JVC service or questions

Laszlo Fekecs Posted Feb 11, 2008, in response to:Stacy Sample

Hi! My name is Laszlo, and I have a big problem! Could you help me to identify a component in my old JVC DR-MH30 DVD recorder. There is a SO 8 package IC labelled on it: 412 at the top and 665A at the bottom line. The logo for the provider is /\\ or something like that. The symptom is : after plug in the display is blanking with "Loading" and and the set freeze. There was a 470uf/ 16V elko demaged in the power supply (it was about 80uF). After changing it there was nothing changed. I have measured the 5V at the DVD recorder, and there was only about 2-2,5V with a high frequency noise on it. (without loading this line the 5V is present at the connector!) The 12V is good with loading also. For the Hard disc both of the the 12V and 5V were good. Unfortunatelly I'm not able to identify the IC above which seems to be (for me)to provide the 5V for the DVD recorder. Could you send me a schematic from the power supply or a SM for the set? Or have you got an idea what should be the IC labelled with this above? Thank you for your help in advance! Laszlo

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