Garmin nuvi 310D GTM12 TMC problems

lola · Lifetime Member Joined: Aug 31, 2006 Posts: 146

Just spoke to Garmin - check - they do have new PSU cables to fix GTM12 so go phone and ask for yours!

lola · Lifetime Member Joined: Aug 31, 2006 Posts: 146

The old charger is based around a switching voltage regulator so I am not surprised there is noise around. When I get the new charger I will check what has been done.

For those interested the tech spec of the SVR can be found at http://www.cheertech.com.tw/Niko-sem/Data%20sheet/N2576G-33.pdf#search=%22%2Bn2576tg%22

simonhouse · Occasional Visitor Joined: Sep 13, 2006 Posts: 1

Just spoke to Garmin UK this morning - and asked for one of the new PSU cables and the guy said they are still working on a permanent fix and the cables they are sending out are the ones with the surpressor etc. - I mentioned that on this site people are saying that the "new fixed" cables are in stock and are being sent out and he said this is not the case - they are still working on the problem and added me to their spreadsheet of people who want the new cable when it gets released. He offered me the interim cable with surpressor etc. in the meantime... I live in Exeter and around Exeter my level rating on channel 95 is between 13 and 15 all the time although as soon as I leave Exeter it goes down to about 5-7 if I am lucky!!

swing · Posted: Wed Sep 13, 2006 11:28 am Post subject:

Thanks for that simonhouse, it did seem a little quick for Garmin to have the new chargers available.

Lucky you with regard to the signal - I saw a signal strength of 8 for the first time the other day, and it still wasn't consistent enough for reliable traffic reception (however, I'm yet to receive my suppressor due to working away from home).

TGL · Occasional Visitor Joined: Jun 03, 2006 Posts: 29

swing · Posted: Wed Sep 13, 2006 2:16 pm Post subject:

Even more interesting, as the "short term fix" was a suppressor (aka ferrite core) to be applied to the GTM cable, not the power adaptor at all. If it was as simple as a ferrite core on the power adaptor, then the current "short term fix" would have been the permanent one anyway!

JoshT · Posted: Wed Sep 13, 2006 4:18 pm Post subject:

Well I've finally had enough and taken my 310D back for a refund.

Garmin haven't done themselves any favours. Tech support haven't responded to any email dating back over 10 weeks - different issues each time.

Sales cannot even respond to queries on maps for the product.

I do not think its acceptable to have to wait an hour to get answered on the phone - especially if I'm paying for the call.

Apart from the TMC issue I don't think they have fixed the routing between maps. On my unit a route from Slough to cherbourg goes via Gatwick, then U turn back up to the M25 to Dover .......
I think its worse that getting "route calc error "

I also had the problem where the GPS position on the map was incorrect in relation the car on the road - so you could miss the turn either by turning too late or early

Luckily I can afford to wait a bit before having to buy a replacement unit. I don't want all extras the Garmin have added to the unit; just good navigation in a small package. Tom Tom one v2 seems to offer this, unfortunaly without tmc

banjo12 · Posted: Wed Sep 13, 2006 4:42 pm Post subject:

Well if this forum is the tip of the iceberg how many other people are being kept in "mushroom" conditions, Garmin are doing themselves no favours, and I for one will be very wary of purchasing another one of their products.

lola · Lifetime Member Joined: Aug 31, 2006 Posts: 146

Received updated charger - no suppressor but the circuitry is completly different so this is not just a bodge - more a real fix.

lola · Lifetime Member Joined: Aug 31, 2006 Posts: 146

New charger is based around AP34063 dc-dc convertor see: http://www.semiconductorstore.com/pdf/AP34063%20%20%20%20%20%20%20%20.pdf#search=%22ap34063%22
and B1184

Max current supply is up from 0.8A to 1.0A, Output voltage up from 4.75-5.25 to 4.9-5.25

Garmin part number changed from 320-00239-20 to 320-00239-21

In summary - this is a complete re-design away from the Switching Voltage Regulator so I have great hopes.

n4nick · Regular Visitor Joined: Jun 30, 2006 Posts: 136

JoshT

Would be interested in hearing your views if you do go for the TT1 v2. I think there are a few of use here (RDS?) who are adopting a wait and see approach after being dissapointed with the nuvi.

Cheers - Nick

capsecum · Posted: Wed Sep 13, 2006 8:00 pm Post subject:

lola · Lifetime Member Joined: Aug 31, 2006 Posts: 146

True - forgot to say LED is all red not tri-colour like previously.

So I guess youe 360 has the new charger - when did you buy the 360?

capsecum · Posted: Wed Sep 13, 2006 10:01 pm Post subject:

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