The most common reason for intermittent power is a small IC chip on the backside of the I/O board which is attached to the rear housing of your unit. If your unit's warranty has already expired I would recommend the following.
This is at your own risk. Grounding yourself is recommended.
1. Take off the antenna by rotating it as far counter-clockwise as possible (all the way up) and pull it off.
2. Take out 4 screws
3. Hold both front housing and rear housing with and gently pull the two housings apart. Once it's barely opened unplug the RF cable attached to the corner of the main board. It will either be gray or black depending on when it was made.
4. The other end of the RF cable is connected to the I/O board attached to the rear housing. This is the board that has the small IC chip that rubs against the rear housing which causes it to come off.
5. There are 6 or 8 small screws holding the I/O board to the rear housing. Remove them.
6. Once you got it off, look at the back. On the bottom backside of the I/O board next to the metal heat shield there should be 3 small IC chips. The lowest one is the one that rubs off.
If the IC chip is present try looking at it through a magnifying glass and even push it a little bit to make sure it's not loose.
If the IC chip isn't there, then look around for that rattling piece. (Either way I suppose look for the cause of the rattle)
Soldering: If you find that the IC chip is loose, then you will need to solder it back on. This is not a lead-free unit therefore you can use lead. If you do not feel comfortable doing this, then atleast you have found the problem and can take it to an electronics shop for them to solder it back on. If you feel comfortable doing it, then by all means knock yourself out. If you have any further questions then please ask before proceeding.
Jun 29, 2007 |
Magellan RoadMate 700 GPS Receiver