| Author | Message | ||
     Mareklew Tinkerer Username: Mareklew Post Number: 97 Registered: 03-2010 Rating: N/A |
Tom, them saying that selenium cells don't quit, just the contacts oxidize, sound like a car dealer selling a 'good car, just all the rubber hoses are shot' or saying, that 'this gear is mostly OK, it's just the teeth that are stripped'. It's always some part of an element that dies first and is responsible for failure. As selenium cell based meters need only tiny amount of current, it is often enough to moisturize, or even just press down ('massage') shot conductive paint to regain enough contact - for a time (not long anyway). In many cases it could be possible to revive a cell by putting new contact paint - but what to do if there's still coating on the cell and the conductive layer deteriorated UNDER the coating? With enough effort and money you can even fix a transistor within an IC, but it's not okay to blame repairmen who refuse to do it... Marek |