41C is ON, display is OFF, a key pressed display is ON --Repair Help

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41C is ON, display is OFF, a key pressed display is ON --Repair Help

02-14-2023, 03:55 AM

Post: #2

Didier Lachieze

Senior Member

Posts: 1,663
Joined: Dec 2013

RE: 41C is ON, display is OFF, a key pressed display is ON --Repair Help

According to this thread, this could be due to a defective display driver:

Quote: From page 7 of the service manual's updated service notes (HP41C-35)

4. Display lit only when a key is pressed (blanked in standby).

a. Replace display driver hybrid. (P/N 00041-60090)

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Messages In This Thread

41C is ON, display is OFF, a key pressed display is ON --Repair Help - TallKey - 02-13-2023, 11:01 PM

RE: 41C is ON, display is OFF, a key pressed display is ON --Repair Help - Didier Lachieze - 02-14-2023 03:55 AM

RE: 41C is ON, display is OFF, a key pressed display is ON --Repair Help - TallKey - 02-17-2023, 08:08 PM

RE: 41C is ON, display is OFF, a key pressed display is ON --Repair Help - brouhaha - 02-14-2023, 07:04 AM

RE: 41C is ON, display is OFF, a key pressed display is ON --Repair Help - mfleming - 02-14-2023, 01:31 PM

RE: 41C is ON, display is OFF, a key pressed display is ON --Repair Help - TallKey - 02-25-2023, 02:58 AM

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