跳转到主内容

The Raspberry Pi is a credit-card-sized single-board computer developed in the UK by the Raspberry Pi Foundation with the intention of promoting the teaching of basic computer science in schools.

4 个问题 查看全部

I have a burned component and need help on how to disable this

I have a burned component and need help on how to disable this. Here is the burned component

Block Image

回答此问题 我也有这个问题

这是一个好问题吗?

得分 0
添加一条评论

2个回答

You need to de-solder the 3R7 and need to solder a new one on it. It can cause issues with other IC’s if it’s damaged. It’s part of the power supply regulator circuit.

这个答案有帮助吗?

得分 0

评论:

Is there any specifications i need to find or datasheet?

完成的

Maybe you can find it on here: https://www.pinterest.com/pin/8296481811...

完成的

添加一条评论

The processor in the raspberry pi is a "smart" thing. It has a built-in DCDC converter to facilitate making a smartphone or other battery-powered device from this processor. This means that the processor is directly connected to the input power. It is not the case that says a DCDC converter chip is connected to the input and that such a chip might have blown and shielded the important parts of the pi from the damaging voltages.

Some chips have a "margin". i.e. the manufacturer tells you "no more than 12V", while in fact, the chip will survive 15V. However modern chips, and especially chips that include fast processing stuff the margins are really small. The specs on the BCM2835 SOC (and its successors) say  5.5V, but I don't expect it to have any margin bigger than about half a volt. It'll break down permanently around 6V.

Regards,

Lewis

这个答案有帮助吗?

得分 0
添加一条评论

添加你的答案

james147 将永远感激不已
浏览统计数据:

过去的24小时: 0

过去的7天: 2

过去的30天: 11

总计 37