Question about Garmin nuvi 260W GPS Receiver
These diagrams are not available to the consumer and are proprietary to the manufacturer given that the product is still covered under warranty repair.
Remove the part and using an ohmmeter, determine if its shorted. If it is a diode, you don't have to use a SMT diode, a leaded part will do just fine, like a 1N4001-1N4007 or smaller series diode. It may be difficult to solder but is is possible.
Posted on Aug 26, 2009
Testimonial: "Thank you for that. My issue is that the component was blown to pieces and I can't identfy it. Cheers again."
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When the power was reversed this shorted out one of the components, possibly an Operational Amplifier. This tells me that there is no diode protection and possibly the circuitry is exposed directly to the input power supply. The fix would be to find the shorted component with the use of a schematic and a multimeter. Once you correct the shorted component then if possible you can add diode protection by putting a diode (forward biased direction) in the path of the positive line.
Again you will need a schematic, and a multimeter to work on this problem.
I hope this helps,
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