【Renesas RA8D1 board】 Repair board buttons

TL-LED

【Renesas RA8D1 board】 Repair board buttons [Copy link]

1. Board Problem

After receiving the board, I saw that both buttons on the board were damaged.

2. Board button repair

2.1. Circuit diagram of the key part.

There are two buttons defined on the board. One is reset and the other is user button. Two pads of the user button on the board have fallen off. The reset button pads are intact.

2.2. Replace the button

I bought keys of the same specifications online and started replacing them.

Before replacing it, let's analyze where the fallen pad is connected to.

Find the nearest solder joint to make a connection and restore the button function.

2.2.1. Remove the damaged button and remove the solder on the pad.

2.2.2, Pad connection point

After measurement, the solder joint below and the PB08 pin are directly connected.

2.2.3. Connect solder joints to pads

2.2.4. Repair soldering pads

nmg

There doesn't seem to be any solder pads where you wired it?

I don't understand what they used to weld the detached parts.

Maker_kun

sharp

ID.LODA

nmg posted on 2024-8-1 08:59 It seems that there is no solder pad where you connected the wire? What did you use to solder the detached part in the end? I don't understand

It should be connected to the wiring, just scrape off the green oil

秦天qintian0303

It looks more serious than described. It was said before that only one was broken.

TL-LED

nmg posted on 2024-8-1 08:59 It seems that there is no solder pad where you connected the wire? What did you use to solder the detached part in the end? I don't understand

There is a via under the reset button. Scrape off the green oil and connect it with the loose pad using copper wire.

TL-LED

Qintianqintian0303 posted on 2024-8-1 09:48 It looks more serious than described. It was said before that only one was bad.

Maybe another button got knocked off during transportation?

秦天qintian0303

TL-LED posted on 2024-8-1 09:54 Did the other button get knocked off during transportation?

I guess it's the first time to run it, but the problem is not big, looking forward to the review