I put to high voltage to unit
I connected the cord to a 12 volt battery now nothing any hope
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@mpr most likely scenario are some burned components on the mother board. This guide will get you to the motherboard. Then take a good look around. Take some good image of the board and post those with your question. Use this guide for that. It will allow us to see what you see.
指南
Removing the Garmin Nuvi 1300 LCD touch Screen assembly
难度：
非常容易
—
5 minutes
指南
在已经存在的问题里加入图片
难度：
非常容易
—
2 - 5 minutes
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