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HP-65 - 1604S01786 - Display faulty or Drivers faulty ?
02-16-2020, 11:24 PM
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teenix Offline
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RE: HP-65 1604S01786 - Display faulty or Drivers faulty ?
The LEDs look like some I have seen where the segments appear to be faulty and have degraded over time. They light in small areas rather than the full segment.

The partially lit display I would think, needs to be checked with a scope. The cathode driver for that digit might be faulty keeping the digit partially on and ghosting from the other lit digits.

cheers

Tony
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RE: HP-65 1604S01786 - Display faulty or Drivers faulty ? - teenix - 02-16-2020 11:24 PM



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