Anyone has an Audiolab M-One,
would you please kindly check if there is any component on these two positions(C1 and C32) in front of the LM3886TF from an Audiolab M-One like attached photos show.
I'd like to confirm these two capacitors were soldered by "Manufacturing" or by "Repairing" (Yes, I did send it back to the dealer for right speaker crackle problem), because it sounds not quite right after repairing 😀
would you please kindly check if there is any component on these two positions(C1 and C32) in front of the LM3886TF from an Audiolab M-One like attached photos show.
I'd like to confirm these two capacitors were soldered by "Manufacturing" or by "Repairing" (Yes, I did send it back to the dealer for right speaker crackle problem), because it sounds not quite right after repairing 😀
Attachments
Since they are optional component Cc for LM3886，
and using ceramic capacitor here seems not right,
I deicide to remove them.
My M-one sounds well again after removing these two MLCCs ,
though the old crackle noise problem came back as well ,
will continue to find out the source of the intermittent crackle noise problem 😀
and using ceramic capacitor here seems not right,
I deicide to remove them.
My M-one sounds well again after removing these two MLCCs ,
though the old crackle noise problem came back as well ,
will continue to find out the source of the intermittent crackle noise problem 😀
So long as its C0G/NP0 there's no problem with ceramic, C0G are linear and stable.
I note the excess of solder on the chip pins and the failure of it to wet the top side pads properly. I'd add some liquid flux topside and reflow those.
I note the excess of solder on the chip pins and the failure of it to wet the top side pads properly. I'd add some liquid flux topside and reflow those.
Thanks for your advice🙂
I measured them with DE-5000 LCR meter,
under 100khz the capacitance is 100pF, looks good for Cc,
but the ESR is about 10ohms, guess this is not good,
If intermittent crackle noise persists, I will replace it with silver mica.
I measured them with DE-5000 LCR meter,
under 100khz the capacitance is 100pF, looks good for Cc,
but the ESR is about 10ohms, guess this is not good,
If intermittent crackle noise persists, I will replace it with silver mica.
