![]() |
Push Button switch top rear 3 metal threaded inserts at top facing to back & no others ![]() |
![]() |
Uses BA-5800/U as primary
battery and came with a CR123 as the memory backup
battery. Notice cract in bottom of primary battery compartment and distortioni in adjacent threads compared to how clean threads are in backup battery compartment. ![]() |
5800BA
Battery Adapter Modified for Smaller Diameter &
w/only 4 AA Batteries & with Dentar Floss to Pull Out
of Battery Compartment![]() |
Magellan GPS
Commander PLGR DAGR Polaris ![]() |
Inside View![]() There's what appears to be J-B Weld epoxy near the primary battery opening.Not sure where the metal part belongs. Probably at the back of the antenna coax connector. |
Large cap is 0.1F so this
may be a real time clock board![]() Note missing IC, maybe the crypto chip? |
RF box at left and micro
controller at right top view![]() The two ICs with labels (in sockets) are the memory chips that contain the firmware. To the right of them are a couple of RAM memory chips. |
RF box at left and micro
controller at right bottom view. White connector at lower right is the connector for the flex circuit, difficult to reconnect after soldering the 5 joints. ![]() Note the metal strip attached to the antenna coax connector ground. Maybe it was bonded to the metal part shown above? |
back of front panel.
standard 44780 LCD driver chip + keyboard lines.![]() Ther are what appears to be a bundle of fiber optic light pipes that are probably part of the keyboard illumination system. |
maybe PCB is for primary
and back-up battery management?![]() |
5 Unsoldered Connections (What Goes Wrong)![]() Note: Once soldered the "L" shaped board can no longer be seperated from the front panel. After soldering the unit still does not power up. |
[an error occurred while processing this directive] page created 10 Apr
2012.