BU-303 only lock while booting

Goddy · 02-21-2005, 08:22 AM

Hi,

My BU-303 gps receiver always worked fine, but since ive got my new car and laptop (from peug. 205 to Toyota Corolla G6, and P3-500 to Cel 2.2Ghz) im experience problems getting sat-lock.

When the gps is hooked up the red light wont blink (which it did with my previous install, it started blinking after about 30 seconds). But when i reboot the laptop, the gps is still getting powered and gets a lock (red light is blinking). When windows (XP) is started and starting the software (destinator 3) the blinking is gone and doesnt have a lock on the sats. I got mad and just started driving without having lock. While driving i sometimes suddenly have a lock for a few seconds to 1 minute and then disappears. I have a clear sky and its attached in the front under the window.

Always when i boot the light starts blinking so it has a lock, but when i start the software the blinking disappears. So im thinking its a software problem.

What could it be?

Goddy · 02-21-2005, 01:49 PM

I figured out it has something to do with my Lilliput display. When the gps receiver doesnt have a lock and i turn off the screen, almost immediately the gps receiver starts blinking and has a lock. When i turn the screen back on i have a lock for about a minute (or a few more) then it starts falling down. Then turn off/on the screen and i have lock again. After a while it will not recognize the gps receiver and i have to boot or reinstall it.

When it happened i tried to pull out the usb plug ofthe lilliput, but the lock didnt came back. I tried to pull out the 9-pins plug near the lilliput and then the lock come back....

So its a pretty weird problem, any suggestions?

djScript · 02-21-2005, 02:13 PM

This happened to me too. Try playing around with your screen's refresh rate. I think this has been discussed before.

*edit*
http://www.mp3car.com/vbulletin/gps/39188-gps-dropouts-caused-xenarc.html
http://www.mp3car.com/vbulletin/lcd-display/34093-lilliput-kills-usb-gps.html

Goddy · 03-01-2005, 01:51 PM

I figured out that i get best results with 75hz (not with 60hz).

Even with 75hz i dont have lock all the time, but when i put the gps unit on a metal underground i have lock lock all the time. I have to put it on the passanger airbag unit to get lock. I think i have to live with it or perhaps mount soms metal plate under it.

Isnt there a way to block the interference with some aluminum foil?

ZenerDiode · 03-01-2005, 03:02 PM

same here. lilliput refresh was the problem. Mine is at 60hz to make it work

mi800 · 03-01-2005, 04:33 PM

Same here. lilliput at 70hz works best for me. At 60hz, it doesn't lock at all.