Re: 465 Scope Question


Mark Vincent
 

Bill,

Check the ac voltage across C1562. It sounds like your filter condenser is bad. If the cap is bad, replace it with 3300-4700mfd 25V UHE type. These are the best I have found for ESR and life. Filter condensers in these and 7603s seen to give problems and replacement is necessary.

Also check VR1522. I have never seen one of the 9V zeners be good. Yours is likely open. I know it may not make a difference in the output voltage. I change these in my units with BZX85B9V1.

Mark

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