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Mackie SR24.4
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John Smith
Oct 12, 2015, 3:57:27 PM10/12/15
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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.
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.
Phil Allison
Oct 13, 2015, 12:18:48 AM10/13/15
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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
John Smith
Oct 13, 2015, 9:36:00 AM10/13/15
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"Phil Allison" <palli...@gmail.com> wrote in message
news:32bf3ff3-7b1e-4313...@googlegroups.com...
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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news:32bf3ff3-7b1e-4313...@googlegroups.com...
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.
>
>
>
> ... Phil
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>
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