Does anyone have any experience with the Mackie SR24.4
A customer asked if I could repair one which he said had a power issue.
So I was hoping for an easy power supply repair but on opening it I find this in channel 11.
s651.photobucket.com/user/jbloggs2/library
Sorry Mr Customer I don't think it's going to be repairable.
** It might take a bit of time and work, but that looks repairable to me.
Mackie don't bother to de-couple each channel with fusible resistors in case of a short. Op-amps can be the cause and then PSU delivers up to 20 watts of heat into one - starting a small fire.
I would start by removing all the burnt parts and seeing if the PSU fault is cleared.
... Phil
Yes I probably could repair it by cutting out the burn, bridging the tracks, and remaking the circuit on the back of the board with a DIP version of the opamp (if it's a failed opamp) and the relavant components.
However the customer has decided not to go that far and just wants the channel 1-14 board disconnected.
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