22 May 2007, 22:39
I'm thinging it doesn't make any difference to the screen if you run it, since the electrical action isn't what makes them degrade to blackness, air infiltration between the glass matrix layers is. Usual considerations of crystals aging from being ran and trying to keep capacitors healthy thru occasional usage. The LCD screens that go slightly "rainbow" or tan, but still work - some of those just have a degraded polorizing layer over the display glass(under the actual crystal). The late '60 were the infancy of polorized plastics...you can get much better polorizing film today to replace that stuff. A good photography store or Zantech will have this - most is .010-.015" thick.(.2-.3mm) If you slip off the plastic polorizing layer your display will "disappear" while running, lay it back down, it reappears, magically. 8) El cheap LCD displays are another source of fresh polorizing film....the cheapest stuff of today is probably much better than the premium crap of 1975. :?
To quote Zanoni's Digital Watch Repair Manual," The display consistes of two pieces of glass, coated with a transparent conductive coating and sealed together. It is then filled with the lquid crystal and plugged. Polorized light is required to see the effect of the voltage on the liquid. Therefore, polarizers are adhered to both sides of the display".
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Sales of vintage LED, LCD, analog watches,
parts and gadgets -
repair tutorials & tips
Nov. 2022 - back in business!! BItter divorce is in home stretch, come grabs some great deals, I had to open the safe . . . damn attorneys. piss.