Hello, my lite switch of my son no longer works, I disassembled it and I saw oxidation, I cleaned and changed some resistance the switch is restarted but there is no sound, and from time to time at startup I have the error 2153-0321, I swapped the audio chip with another switch but I have the same problem… I tried another speaker and the same problem… do you have an idea? I’ll post you some photos, thank you in advance
If I plug headphones jack the switch boot but no sound in headphones
show the audio chip area after your replacement.
I believe you didnot replace the 5pin LDO regulator next to it
Hello whee is it ? Thanks
Okay I need try to change it thanks
I have try to change it and I lost my new regulator 
can I find same regulator on switch v1 v2 or OLED ? Thanks because I have other motherboard
But I truc with old regulator I restart the switch with headphone and I hear sound but very bad sound like crispy…
this one from v1 or v2 should work. though I think the one on oled should fit better
since v1/v2 is far elder design.
Thank you very much, I changed the regulator and the switch starts normally without the game player but there is no sound, if I connect the game player the switch displays the error. and does not want to go to the menu
If I disconnect the game player the switch continues to make the error, I have to disconnect the battery, I wait a moment and the Switch wants to restart, but still without sound and without a game player.
I have try other reader card game same thing
have you replaced/worked those resistors around the LM damaged area or just the chips?
It is barely impossible to figure your situation without detail pictures
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If you have idea or schématique of audio line …? Thanks 
Hep … please iam so lost