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Repairing a dead unit

I brought a Rog ally off eBay with a bios lock on it, my plan for that was to pin directly to the bios chip and flash it. However, upon receiving the device it now has no signs of life.

Upon taking it apart I can see it has been opened before and a bigger battery has been put it.

When inspecting the board I can see any obvious signs of damage but I have noticed that if I disconnect the main ribbon cable from the left joystick board and then plug it into power I now get a red led on the charging light. It stays solid for a few seconds and then flashes. When this happens it draws around 20.12v at 0.010a. when I reconnect the joystick board I get no led.

My first thought is that there is something wrong with the joystick board. I just wanted to see if anyone has had any similar issues before and if they know if the device can still boot if the joysticks are not connected.

Thanks in advance

Answer this question I have this problem too

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Hello. I didn't put this as an answer just so that we can assess the situation more. What I would think that happened is that the original owner short circuited the device when they tried to replace the battery, or they knocked something out of place while opening or closing the device. That amperage shows signs of it.

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Hi!

Regarding the damage on the board, is it possible to upload pictures?

Adding images to an existing question

Thanks!

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