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  #55  
Old 11-03-18, 21:29
Chris Suslowicz Chris Suslowicz is offline
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Join Date: May 2007
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You'll almost certainly find that C25 is no longer a capacitor and needs re-forming or replacing. Old electrolytic caps lose the insulating layer on the plates/foil over time if not used, and act as resistors instead. If power is applied they can explode due to a build up of pressure caused by electrolysis.

There are ways round this, using a variable voltage supply to bring it back to life slowly, or a "proper" re-forming unit that applies pulsed DC in an attempt to re-form the aluminium oxide insulating layer.

Chris.
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