| Author |
 Topic  |
|
SHARCNET
USA
43 Posts |
 Posted - 22 avr. 2009 : 18:22:06
|
| [ED - Deleted at the request of the user] |
 |
|
|
PouchX
Poland
272 Posts |
Posted - 22 avr. 2009 : 23:56:27
|
This part has to be replaced. (S79)
This is electronic switch between int/ext antena voltage.
 |
|
|
|
SHARCNET
USA
43 Posts |
Posted - 23 avr. 2009 : 21:38:58
|
| [ED - Deleted at the request of the user] |
Edited by - SHARCNET on 23 avr. 2009 21:40:47 |
|
|
|
PouchX
Poland
272 Posts |
|
|
rhaines
4 Posts |
Posted - 27 avr. 2009 : 13:46:40
|
Hi guys, this is my firs post. i have the same problem with my nuvi 670.Has Anyone found a solution to this yet? does the IC change work?
Regards
Richard |
|
|
|
recurry
8 Posts |
Posted - 27 avr. 2009 : 19:01:02
|
quote:
Originally posted by SHARCNET
There is a ~2.5-3.0V bias on the external antenna jack to power an external antenna with pre-amp. By tieing the two lines together (external to internal), puts that bias voltage at the input of the internal antennna's pre-amp circuit. I have no idea if that's going to be an issue, long term.
- Jim
SHARCNET-USA
Actually not. There is a capacitor between the actual internal patch antenna and the pre-amp which provides DC isolation. Works just fine and is a very simple and easy solution. Replacing the switch is a more elegant solution and I recommend it if one is capable of performing it but I've owned 3 NUVI's and several in my family own them and none have ever needed to use an external antenna so the simple coax fix should suffice for most.
|
|
|
|
SHARCNET
USA
43 Posts |
Posted - 29 avr. 2009 : 20:28:12
|
| [ED - Deleted at the request of the user] |
Edited by - SHARCNET on 29 avr. 2009 20:49:47 |
|
|
|
recurry
8 Posts |
Posted - 29 avr. 2009 : 20:39:28
|
quote:
NO NEED TO QUOTE A MESSAGE DIRECTLY ABOVE YOURS, MAKES THE FORUMS EASIER TO READ, THANKS ;-) GPSPASSION TEAM
You seem to be confused, there is a capacitor between the internal antenna connection and the pre-amp. Stops the DC component perfectly fine if you simply jumper from the center pin of the external antenna jack to the center pin of the internal antenna. Having a DC component on the patch antenna won't hurt a thing. It's completely insulated.
Although I would normally be concerned about the RF effects on such an arrangement I see no difference in signal strengths before and after as indicated by the Nuvi's signal strength indicator in a before and after test. Again, it's an easy fix that just works.
For those that have the capability and tools to do tiny surface mount re-work, replacing the rf switch is the way to go but not necessary unless you are really concerned about having it work exactly as it was designed to.
I don't feel the need to have a debate on this. I simply offered this up as a simple fix for this common problem from someone who has actually implemented it and has been using the unit for 2 years with the fix in place.
Good luck to you all... I'm unsubscribing from this topic.
Cheers,
Ron |
Edited by - NanaimoRick on 29 avr. 2009 22:41:12 |
|
|
|
PouchX
Poland
272 Posts |
Posted - 30 avr. 2009 : 06:41:09
|
quote:
I received (2) orders of the RF switch.
(50) pcs of the Skyworks part.
(50) pcs of the California Eastern Laboratories compatible part.
If it is not a secret... can you tell me where you order these parts.
I do Garmin repairs here in Poland but it is very hard to get some parts here.
Not many companies ship parts internatioanly :(
PS. Regards to Linear Technology and Pericom. |
|
|
|
SHARCNET
USA
43 Posts |
Posted - 01 mai 2009 : 21:57:04
|
| [ED - Deleted at the request of the user] |
Edited by - SHARCNET on 17 mai 2009 06:00:57 |
|
|
|
rhaines
4 Posts |
Posted - 05 mai 2009 : 22:02:33
|
Thanks Ron,
I have tried the workaround that you described and it works perfectly. After I put it all back together I got full reception within 30 seconds....Brilliant. A good fix for people that do not have surface mount capabilities at hand or not wanting to pay the extortionate repair prices of Garmin.
Thanks a lot
Richard |
|
|
|
ernesas
Argentina
9 Posts |
Posted - 06 mai 2009 : 13:55:52
|
Hey RHAINES! RECURRY?
Can you please seand some pic of what you did?
(or maybe you can use the excellent pic that POUCHX upload to show how to do it?)
Did you bridged pins 1 and 3 on the IC or used a coax cable (only center part?)to bridge from center pin of OA jack to internal antenna (where is the center pin of internal antenna?)
What type of cable did you used?
Sorry to bother you... need to fix mine GA****
THX ! |
|
|
|
ernesas
Argentina
9 Posts |
Posted - 07 mai 2009 : 13:30:27
|
Fixed !
1) Opened flip antenna (2 screws on top and carefully removed back plastic cap)
2) Carefully remove tin foil, it is glue and can be placed again on same place.
3) With the center part of a thin coax cable taken from an old mobile ext antenna (same cable as gps ext antenna) solder from center jack of ext antenna to int antenna, look picture attached.
4) Place tin foil on same place.
5) Carefully reinsert back plastic cap and screws.
THAT'S ALL, NOT VERY HARD TO SOLD WITH A MAGNIFING GLASS (sorry for my english!)
WORKING 100%
|
|
|
|
Isidore
9 Posts |
Posted - 16 mai 2009 : 19:25:56
|
Thank you, I've fixed mine too !
Isodore |
Garmin Nuvi 360 Europe - City Navigator NT 2008 - Firmware V5.00 - Audio V1.50 - GPS V3.00 |
|
|
|
1Oll
United Kingdom
2 Posts |
Posted - 15 oct. 2009 : 14:57:05
|
Similar "lost Satellite" problems with Nuvi 670. Did you get yours sorted?
|
|
|
|
Topic |
|
- 
- 
lost satellite signal on nuvi 660
