I recently got a switch which did not turn on (blu screen and could not do anything). It draws 15v so battery is charging as normal. I opened it, it’s never been touched by anyone, rose old thermal paste still there and foam attached to the heat sync. On microscope I did not see any sign of corrosion or any particular damaged components, only dust. Completely cleaned the board with isopropyl alcohol and give a try with no luck. I cannot exclude that this consol had not being dropped to the ground since it has a sing on external enclosure. Anyway detaching the eMMC screen did not light up and enter in RCM mode ( I can see APX in playload software).
Any suggestion where and how to check? I can take al measures needed and change components. Just need to be guided trought it. Thanks!
Hard press does not make any changes in any of soc, rams or emmc. I attemped carefoully two reflow… Unfortunately no changes at all. I reflowed both ram first, then APU. I reached the melting point for sure, chip was moving. I reflowed also emmc, no luck. Anything else to try?
Calvin, you probably right! Indeed I’ve just pressed very hard ram module close to the usb-c connector and voilà, normal boot! I’ve reflowed twice this ram, but it did’t solve so I guess it’s time to replace it. I hope that there is no bad trace under it. Some advise where I can find this replacement?
It is possible that the issue have another cause. I can only talk from my experience, where I had a Switch with the ‘lzma decompression’ error which I solved by replacing the ram ics.
