Damaged my 530 changing battery.

MrT · Posted: Mon Mar 21, 2011 11:59 am Post subject: Damaged my 530 changing battery.

I recently changed my battery on the 530 as it had failed and whilst doing this, a tiny surface mount capacitor (I assume it is a capacitor as it is marked as C218 on the board to the right of the battery) fell off and I cannot find it. This has removed the bluetooth capability from the unit, otherwise it still works OK.

Has anyone any ideas on how I could replace this capacitor as I have no idea of its specifications? I believe I could fit one if I could get one.

If I cannot fix the bluetooth I will have to connect the TMC into the car aerial and use that for the traffic. Once the 530 map updates subscription runs out, the 940 will be used instead of the 530 then I will have look for a 940 replacement.
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Drivelux

IanS100 · Posted: Mon Mar 21, 2011 12:16 pm Post subject:

I'm afraid I can't help with your electrical problems but you could always ask TomTom to transfer the map update subscription to the 940 - why are you looking to replace the 940?

MrT · Posted: Mon Mar 21, 2011 12:32 pm Post subject:

The 530 has the UK map subscription which is cheaper than the 940 Europe subscription (which I also have).

We need two SatNavs, so the 940 would likely take the place of the damaged 530 and I would buy the latest and best in place of the 940, only there is nothing I consider a worthwhile upgrade at the moment.
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Drivelux

IanS100 · Posted: Mon Mar 21, 2011 12:45 pm Post subject:

mikealder · Posted: Mon Mar 21, 2011 10:49 pm Post subject:

Edmo117 · Occasional Visitor Joined: Mar 21, 2011 Posts: 6

MrT · Posted: Tue Mar 22, 2011 10:05 am Post subject:

Thanks Edmo, that was the information I was looking for.

The soldering will be the tricky part, I have a fine enough tip but my concern is holding the component in place and not moving it with the tip. it is so small even my smallest tweezers will not hold it. Any advice here?
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Drivelux

matthewj · Frequent Visitor Joined: Apr 03, 2006 Posts: 751

I've not seen these, but if the PCB is anything like other modern kit I tried soldering wires too, the soldering bit will be about 100 times bigger than it ought to be. I tried soldering to a digital recorder PCB and destroyed it big-time. Incredibly hard. The next one was just as bad and I got someone professional to do it.

Me, I'd leave it as-is if it is mainly working! Confused

Edmo117 · Occasional Visitor Joined: Mar 21, 2011 Posts: 6

Andy_P · Posted: Tue Mar 22, 2011 1:39 pm Post subject:

As said above, even your smallest soldering iron tip is going to seem huge when you try this, but it CAN be done.

The best advice I can give is to get hold of some solder PASTE. A tiny amount of this on each end of the capacitor will temporarily "glue" it in place on the PCB, while you can poke it gently with long-nosed tweezers or something like a cocktail stick, to get it into position.

Then hold it down with the cocktail stick in one hand, while very briefly using the other hand to touch each end with the iron to melt the paste.

One of those large illuminated magnifiers on an anglepoise arm or a decent light and a watchmakers eyeglass are almost essential too, in my (eyes failing) experience.

MrT · Posted: Tue Mar 22, 2011 3:14 pm Post subject:

jmcmtank · Lifetime Member Joined: Feb 19, 2007 Posts: 48

Good video-series actually-on youtube;http://www.youtube.com/watch?v=3NN7UGWYmBY

MrT · Posted: Thu Mar 24, 2011 11:15 am Post subject:

Excellent! I used a 1uF 603 for C218 and bluetooth is restored and traffic working again. It took four capacitors, three are somewhere in the room after flying out from the tweezers and one is soldered, albeit at an odd angle to the flat to the board.

I ended up have to hold the board in a clamp and also clamping a jewellers loupe above it so I could see enough detail to do it. Never again.

I suppose if the battery ever goes on the 530 again, it will be easy to remove, as I used a much weaker tape. I hope the 940 battery does not need replacing for a long time, but it is nearly the same age.
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Drivelux

Edmo117 · Occasional Visitor Joined: Mar 21, 2011 Posts: 6

Andy_P · Posted: Thu Mar 24, 2011 11:36 am Post subject:

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