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Geoff Quickfall · 04-12-2019, 07:09 AM

So here it is, case and calculator:

My new old stock 5 section LED displays arrived and I have some time off between flights. Lots of flying as the 787 has taken up the slack of 25 parked boeing 737 max’s.

The top and keyboard removed:

[Image: 4D75BFEF-34D7-4325-896C-28B4527CC559_zpsxkfypd7g.jpeg]

[Image: 4D75BFEF-34D7-4325-896C-28B4527CC559_zpsxkfypd7g.jpeg]

Keyboard obverse:

[Image: F18856FA-F112-4FE5-A612-AC008C7C8AAF_zps6jmygpkk.jpeg]

Keyboard reverse:

[Image: C3BFF634-0B82-4013-ABA2-728148EA24D4_zpsr0o2qoig.jpeg]

Optional display board obverse:

[Image: D5799D9C-A6E6-4B2D-B240-3C0F0CBD358A_zpsmiwetjf6.jpeg]

Optional display board reverse:

[Image: 4ECEF51C-2223-4808-875D-3EB743F283B6_zpsyjq4cpm8.jpeg]

5 digit LED display with separated decimal point. The decimal points take up a whole digit display:

[Image: ECA28A6C-623B-4B96-9B9A-9751D305B5F4_zpsfqn7sziw.jpeg]

[Image: ECA28A6C-623B-4B96-9B9A-9751D305B5F4_zpsfqn7sziw.jpeg]

The display board with bad LED display removed and solder removed:

[Image: B517AE9A-A7D2-4CA2-AF85-CBBF2800C76E_zpsm9evwtd2.jpeg]

Image of LED block orientation. Note the two end elements consist of rectangles on stalks. There are no notches as with ICs to show orientation. I placed a flashlight under the circuit board to see how the contacts were oriented:

[Image: C18CC8AB-72E0-4386-9AA6-B7C579D17D36_zpsflalkvxn.jpeg]

[Image: C18CC8AB-72E0-4386-9AA6-B7C579D17D36_zpsflalkvxn.jpeg]

New LED block soldered in place and fully functional:

[Image: 54DCAFBB-88A3-4861-AA64-CA179C5CF108_zpsv5xg5hql.jpeg]

Continued in part 2...